Context: Document [1](Title: Retina) is "wired wrongly" or "badly designed"; but in fact, the retina could not function if it were not inverted. The photoreceptor layer must be embedded in the retinal pigment epithelium (RPE), which performs at least seven vital functions, one of the most obvious being to supply oxygen and other necessary nutrients needed for the photoreceptors to function. These nutrients include glucose, fatty acids, and retinal. The mammalian photoreceptor amplification process uses large quantities energy for vision in photopic conditions (requiring less under scotopic conditions) and, thus, requires the large supply nutrients supplied by the blood vessels in the choroid, which

Context: Document [2](Title: Retina) of the forkhead transcription factors FOXD1 and FOXG1. Additional gradients are formed within the retina that aid in proper targeting of RGC axons that function to establish the retinotopic map. The retina is stratified into distinct layers, each containing specific cell types or cellular compartments that have metabolisms with different nutritional requirements. To satisfy these requirements, the ophthalmic artery bifurcates and supplies the retina via two distinct vascular networks: the choroidal network, which supplies the choroid and the outer retina, and the retinal network, which supplies the retina's inner layer. At first glance, one may think that the vertebrate retina

Context: Document [3](Title: Retina) lies beyond the RPE. The choroid supplies about 75% of these nutrients to the retina and the retinal vasculature only 25%. When light strikes 11-cis-retinal (in the disks in the rods and cones), 11-cis-retinal changes to all-trans-retinal which then triggers changes in the opsins. Now, the outer segments do not regenerate the retinal back into the cis- form once it has been changed by light. Instead the retinal is pumped out to the surrounding RPE where it is regenerated and transported back into the outer segments of the photoreceptors. This recycling function of the RPE protects the photoreceptors against photo-oxidative

Context: Document [4](Title: Conjunctiva) Conjunctiva The conjunctiva lines the inside of the eyelids and covers the sclera (the white of the eye). It is composed of non-keratinized, stratified squamous epithelium with goblet cells, and also stratified columnar epithelium. The conjunctiva is highly vascularised, with many microvessels easily accessible for imaging studies. The conjunctiva is typically divided into three parts: Blood to the bulbar conjunctiva is primarily derived from the ophthalmic artery. The blood supply to the palpebral conjunctiva (the eyelid) is derived from the external carotid artery. However, the circulation of the bulbar conjunctiva and palpebral conjunctiva are linked, so both bulbar conjunctival and

Context: Document [5](Title: Eye) pigment epithelium, and constitutes the cells of the dilator muscle. The vitreous is the transparent, colourless, gelatinous mass that fills the space between the lens of the eye and the retina lining the back of the eye. It is produced by certain retinal cells. It is of rather similar composition to the cornea, but contains very few cells (mostly phagocytes which remove unwanted cellular debris in the visual field, as well as the hyalocytes of Balazs of the surface of the vitreous, which reprocess the hyaluronic acid), no blood vessels, and 98–99% of its volume is water (as opposed to

Context: Document [6](Title: Retina) Retina The retina is the innermost, light-sensitive layer, or "coat", of shell tissue of the eye of most vertebrates and some molluscs. The optics of the eye create a focused two-dimensional image of the visual world on the retina, which translates that image into electrical neural impulses to the brain to create visual perception, the retina serving much the same function as film or a CCD in a camera. The retina consists of several layers of neurons interconnected by synapses. The neural retina refers to the three layers of neural cells (photo receptor cells, bipolar cells, and ganglion cells) within

Context: Document [7](Title: Retinylidene protein) of retinal at the ground state that photoisomerizes to an all-"trans" retinal upon light activation. They are commonly found in the light-sensing organs, for example in the photoreceptor cells of vertebrate retina where they facilitate eyesight. Animal opsins can also be found in the skin of amphibians, the pineal glands of lizards and birds, the hypothalamus of toads, and the human brain. They can be categorized into several distinct classes including: The "visual purple" rhodopsin (opsin-2) of the rod cells in the vertebrate retina absorbs green-blue light. The photopsins of the cone cells of the retina differ in a few

Context: Document [8](Title: Sclera) pass. The thickness of the sclera varies from 1mm at the posterior pole to 0.3 mm just behind the rectus muscle insertions. The sclera's blood vessels are mainly on the surface. Along with the vessels of the conjunctiva (which is a thin layer covering the sclera), those in the episclera render the inflamed eye bright red. In many vertebrates, the sclera is reinforced with plates of cartilage or bone, together forming a circular structure called the sclerotic ring. In primitive fish, this ring consists of four plates, but the number is lower in many living ray-finned fishes, and much higher

Context: Document [9](Title: Retinal haemorrhage) Retinal haemorrhage Retinal haemorrhage is a disorder of the eye in which bleeding occurs in the retina, the light sensitive tissue, located on the back wall of the eye. There are photoreceptor cells in the retina called rods and cones, which transduce light energy into nerve signals that can be processed by the brain to form visual images. Retinal hemorrhage can affect adults, and newborn babies and infants may also suffer from this disorder. A retinal hemorrhage can be caused by several medical conditions such as hypertension, retinal vein occlusion (a blockage of a retinal vein), anemia, leukemia or diabetes

Context: Document [10](Title: Retinopathy) blood to sludge, or thicken and flow slowly, through the retinal arteries. Other disorders that cause hyperviscosity syndrome may also cause blood sludging. Lastly, clots or central artery thrombosis directly blocks flow to the retina causing the cells to die. Proliferative retinopathy is the result of aberrant blood flow to the retina due to blood vessel overgrowth, or neovascularization. These pathologically overgrown blood vessels are often fragile, weak, and ineffective at perfusing the retinal tissues. These weak, fragile vessels are also often leaky, allowing fluids, protein, and other debris to leech out into the retina. They are also prone to

Context: Document [11](Title: Retina) entire retina contains about 7 million cones and 75 to 150 million rods. The optic disc, a part of the retina sometimes called "the blind spot" because it lacks photoreceptors, is located at the optic papilla, where the optic-nerve fibres leave the eye. It appears as an oval white area of 3 mm². Temporal (in the direction of the temples) to this disc is the macula, at whose centre is the fovea, a pit that is responsible for our sharp central vision but is actually less sensitive to light because of its lack of rods. Human and non-human primates possess

Context: Document [12](Title: Diabetic retinopathy) show areas of retinal thickening due to fluid accumulation from macular edema. In the second stage, abnormal new blood vessels (neovascularisation) form at the back of the eye as part of "proliferative diabetic retinopathy" (PDR); these can burst and bleed (vitreous hemorrhage) and blur the vision, because these new blood vessels are fragile. The first time this bleeding occurs, it may not be very severe. In most cases, it will leave just a few specks of blood, or spots floating in a person's visual field, though the spots often go away after a few hours. These spots are often followed

Context: Document [13](Title: Epiretinal membrane) field dependent aniseikonia that cannot be fully corrected optically with glasses. Partial correction often improves the binocular vision considerably though. In the young (under 50 years of age), these cells occasionally pull free and disintegrate on their own; but in the majority of sufferers (over 60 years of age) the condition is permanent. The underlying photoreceptor cells, rod cells and cone cells, are usually not damaged unless the membrane becomes quite thick and hard; so usually there is no macular degeneration. The source of the cells in epiretinal membranes (ERM) has been found to comprise glial cells, retinal pigment epithelial

Context: Document [14](Title: Special senses) light from its surroundings onto a light-sensitive membrane in the back of the eye, called the retina. The retina is actually part of the brain that is isolated to serve as a transducer for the conversion of light into neuronal signals. Based on feedback from the visual system, the lens of the eye adjusts its thickness to focus light on the photoreceptive cells of the retina, also known as the rods and cones, which detect the photons of light and respond by producing neural impulses. These signals are processed via complex feedforward and feedback processes by different parts of the

Context: Document [15](Title: Conjunctiva) palpebral conjunctival vessels will be supplied by both the ophthalmic artery and the external carotid artery, to varying extents. Sensory innervation of the conjunctiva is divided into four parts: The conjunctiva consists of non-keratinized, both stratified squamous and stratified columnar epithelium, with interspersed goblet cells. The epithelial layer contains blood vessels, fibrous tissue, and lymphatic channels. Accessory lacrimal glands in the conjunctiva constantly produce the aqueous portion of tears. Additional cells present in the conjunctival epithelium include melanocytes, T and B cell lymphocytes. The conjunctiva helps lubricate the eye by producing mucus and tears, although a smaller volume of tears

Context: Document [16](Title: Rubeosis iridis) VEGF. These factors stimulate the formation of new blood vessels (angiogenesis). Unfortunately, these new vessels do not have the same characteristics as the blood vessels originally formed in the eye. In addition, new blood vessels can form in areas that do not have them. Specifically, new blood vessels can be observed on the iris. In addition to the blood vessels in the iris, they can grow into the angle of the eye. These blood vessels eventually go through a process called fibrosis which closes the normal physiologic anatomy of the angle. The closing of the angle prevents fluid from leaving

Context: Document [17](Title: Retinol) (three forms/colors in humans), responsible for color vision and sensing relatively high light intensities (day vision), are less impaired at early stages of the vitamin A deficiency. All these protein-pigment complexes are located in the light-sensing cells in eye's retina. When stimulated by light, rhodopsin splits into a protein and a cofactor: opsin and all-"trans"-retinal (a form of vitamin A). The regeneration of active rhodopsin requires opsin and 11-"cis"-retinal. The regeneration of 11-"cis"-retinal occurs in vertebrates via a sequence of chemical transformations that constitute "the visual cycle" and which occurs primarily in the retinal pigmented epithelial cells. Without adequate amounts

Context: Document [18](Title: Blood–retinal barrier) Blood–retinal barrier The blood–retinal barrier, or the BRB, is part of the blood–ocular barrier that consists of cells that are joined tightly together to prevent certain substances from entering the tissue of the retina. It consists of non-fenestrated capillaries of the retinal circulation and tight-junctions between retinal epithelial cells preventing passage of large molecules from choriocapillaris into the retina. The blood retinal barrier has two components: the retinal vascular endothelium and the retinal pigment epithelium. Retinal blood vessels that are similar to cerebral blood vessels maintain the inner blood-ocular barrier. This physiological barrier comprises a single layer of non-fenestrated endothelial

Context: Document [19](Title: Optics and vision) called the retina. The retina converts patterns of light into neuronal signals. The lens of the eye focuses light on the photoreceptive cells of the retina, which detect the photons of light and respond by producing neural impulses. These signals are processed in a hierarchical fashion by different parts of the brain, from the retina to the lateral geniculate nucleus, to the primary and secondary visual cortex of the brain. Signals from the retina can also travel directly from the retina to the Superior colliculus. The human eye is an organ which reacts to light for several purposes. As a

Context: Document [20](Title: Retina) In section, the retina is no more than 0.5 mm thick. It has three layers of nerve cells and two of synapses, including the unique ribbon synapse. The optic nerve carries the ganglion cell axons to the brain, and the blood vessels that supply the retina. The ganglion cells lie innermost in the eye while the photoreceptive cells lie beyond. Because of this counter-intuitive arrangement, light must first pass through and around the ganglion cells and through the thickness of the retina, (including its capillary vessels, not shown) before reaching the rods and cones. Light is absorbed by the retinal

Question: where do the blood vessels that supply the retinal cells lie?

Answer: optic nerve

Answer: The optic nerve


Context: Document [1](Title: Serial ATA) Revision 1.0a was released on January 7, 2003. First-generation SATA interfaces, now known as SATA 1.5 Gbit/s, communicate at a rate of 1.5 Gbit/s, and do not support Native Command Queuing (NCQ). Taking 8b/10b encoding overhead into account, they have an actual uncoded transfer rate of 1.2 Gbit/s (150 MB/s). The theoretical burst throughput of SATA 1.5 Gbit/s is similar to that of PATA/133, but newer SATA devices offer enhancements such as NCQ, which improve performance in a multitasking environment.

Context: Document [2](Title: Western Digital Raptor) cables, as the SATA data connector does not have the required rails. Therefore, only normal cables can be plugged into these connectors. WD360GD Raptors with the Marvell 88i8030-TBC PATA to SATA bridge chip, such as WD360GD-00FNA0 (December 2003) and earlier, are limited to UDMA 5 transfers. In Linux, "applying bridge limits" is displayed and then it allows transfers up to UDMA/100. In Microsoft Windows, they are reported as UDMA 6, but give a burst rate of 104 MB/s, while WD360GD with the 88i8030-TBC1 chip are reported as UDMA 6 and give a burst rate of 122 MB/s, close their theoretical

Context: Document [3](Title: Serial ATA) 3.0 Gbit/s that, when accounted for the 8b/10b encoding scheme, equals to the maximum uncoded transfer rate of 2.4 Gbit/s (300 MB/s). The theoretical burst throughput of the SATA revision 2.0, which is also known as the SATA 3 Gbit/s, doubles the throughput of SATA revision 1.0. All SATA data cables meeting the SATA spec are rated for 3.0 Gbit/s and handle modern mechanical drives without any loss of sustained and burst data transfer performance. However, high-performance flash-based drives can exceed the SATA 3 Gbit/s transfer rate; this is addressed with the SATA 6 Gbit/s interoperability standard. Announced in August

Context: Document [4](Title: SATA Express) Express bus for achieving data transfer speeds greater than the SATA 3.0 speed limit of 6 Gbit/s. Designers of the SATA interface concluded that doubling the native SATA speed would take too much time to catch up with the advancements in solid-state drive (SSD) technology, would require too many changes to the SATA standard, and would result in a much greater power consumption compared with the existing PCI Express bus. As a widely adopted computer bus, PCI Express provides sufficient bandwidth while allowing easy scaling up by using faster or additional lanes. In addition to supporting legacy Advanced Host Controller

Context: Document [5](Title: SATA Express) in 2003), through 3 Gbit/s in SATA 2.0 (standardized in 2004), to 6 Gbit/s as provided by SATA 3.0 (standardized in 2009). SATA has also gradually been selected as the interface for more adopted solid-state drives (SSDs), but the need for a faster interface became apparent as the speed of SSDs and hybrid drives increased over time. As an example, some SSDs available in early 2009 were already well over the capabilities of SATA 1.0 and close to the SATA 2.0 maximum transfer speed, while in the second half of 2013 high-end consumer SSDs had already reached the SATA 3.0

Context: Document [6](Title: Serial ATA) are: Aimed at the consumer market, eSATA enters an external storage market served also by the USB and FireWire interfaces. The SATA interface has certain advantages. Most external hard-disk-drive cases with FireWire or USB interfaces use either PATA or SATA drives and "bridges" to translate between the drives' interfaces and the enclosures' external ports; this bridging incurs some inefficiency. Some single disks can transfer 157 MB/s during real use, about four times the maximum transfer rate of USB 2.0 or FireWire 400 (IEEE 1394a) and almost twice as fast as the maximum transfer rate of FireWire 800. The S3200 FireWire

Context: Document [7](Title: Serial ATA) 2005, SATA revision 2.5 consolidated the specification to a single document. Announced in February 2007, SATA revision 2.6 introduced the following features: Serial ATA International Organization (SATA-IO) presented the draft specification of SATA 6 Gbit/s physical layer in July 2008, and ratified its physical layer specification on August 18, 2008. The full 3.0 standard was released on May 27, 2009. Third-generation SATA interfaces run with a native transfer rate of 6.0 Gbit/s; taking 8b/10b encoding into account, the maximum uncoded transfer rate is 4.8 Gbit/s (600 MB/s). The theoretical burst throughput of SATA 6.0 Gbit/s is double that of SATA

Context: Document [8](Title: Serial ATA) support for "Serial ATA Tunneling Protocol"). SATA 3 Gbit/s theoretically offers a maximum bandwidth of 300 MB/s per device, which is only slightly lower than the rated speed for SCSI Ultra 320 with a maximum of 320 MB/s total for all devices on a bus. SCSI drives provide greater sustained throughput than multiple SATA drives connected via a simple (i.e., command-based) port multiplier because of disconnect-reconnect and aggregating performance. In general, SATA devices link compatibly to SAS enclosures and adapters, whereas SCSI devices cannot be directly connected to a SATA bus. SCSI, SAS, and fibre-channel (FC) drives are more expensive

Context: Document [9](Title: Serial ATA) wafer connectors on each end. SATA cables can have lengths up to , and connect one motherboard socket to one hard drive. PATA ribbon cables, in comparison, connect one motherboard socket to one or two hard drives, carry either 40 or 80 wires, and are limited to in length by the PATA specification; however, cables up to are readily available. Thus, SATA connectors and cables are easier to fit in closed spaces and reduce obstructions to air cooling. Although they are more susceptible to accidental unplugging and breakage than PATA, users can purchase cables that have a locking feature, whereby

Context: Document [10](Title: SATA Express) enables scaling up the performance of SATA Express interface by using multiple lanes and different versions of PCI Express. In more detail, using two PCI Express 2.0 lanes provides a total bandwidth of 1 GB/s (2 × 5 GT/s raw data rate and 8b/10b encoding, equating to effective 1000 MB/s), while using two PCI Express 3.0 lanes provides close to 2 GB/s (2 × 8 GT/s raw data rate and 128b/130b encoding, equating to effective 1969 MB/s). In comparison, the 6 Gbit/s raw bandwidth of SATA 3.0 equates effectively to 0.6 GB/s due to the overhead introduced by 8b/10b encoding.

Context: Document [11](Title: SATA Express) speed limit, requiring an even faster interface. While evaluating different approaches to the required speed increase, designers of the SATA interface concluded that extending the SATA interface so it doubles its native speed to 12 Gbit/s would require more than two years, making that approach unsuitable for catching up with advancements in SSD technology. At the same time, increasing the native SATA speed to 12 Gbit/s would require too many changes to the SATA standard, ending up in a more costly and less power efficient solution compared with the already available and widely adopted PCI Express bus. Thus, PCI Express

Context: Document [12](Title: PCI Express) this allows much higher transfer rates (over 1 GB/s) and IOPS (over one million I/O operations per second) when compared to Serial ATA or SAS drives. For example, in 2011 OCZ and Marvell co-developed a native PCI Express solid-state drive controller for a PCI Express 3.0 ×16 slot with maximum capacity of 12 TB and a performance of to 7.2 GB/s sequential transfers and up to 2.52 million IOPS in random transfers. SATA Express is an interface for connecting SSDs, by providing multiple PCI Express lanes as a pure PCI Express connection to the attached storage device. M.2 is a

Context: Document [13](Title: Serial ATA) the M.2 standard is a small form factor implementation of the SATA Express interface, with the addition of an internal USB 3.0 port. U.2, formerly known as SFF-8639. Like its predecessor it carries a PCI Express electrical signal, however U.2 uses a PCIe 3.0 ×4 link providing a higher bandwidth of 32 Gbit/s in each direction. In order to provide maximum backward compatibility the U.2 connector also supports SATA and multi-path SAS. The SATA specification defines three distinct protocol layers: physical, link, and transport. The physical layer defines SATA's electrical and physical characteristics (such as cable dimensions and parasitics, driver

Context: Document [14](Title: Serial ATA) The host connector is backward compatible with the standard 3.5-inch SATA data connector, allowing up to two legacy SATA devices to connect. At the same time, the host connector provides up to two PCI Express 3.0 lanes as a pure PCI Express connection to the storage device, allowing bandwidths of up to 2 GB/s. Instead of the otherwise usual approach of doubling the native speed of the SATA interface, PCI Express was selected for achieving data transfer speeds greater than 6 Gbit/s. It was concluded that doubling the native SATA speed would take too much time, too many changes would

Context: Document [15](Title: Serial ATA) revision 2.0. It is backward compatible with SATA 3 Gbit/s. The SATA 3.0 specification contains the following changes: In general, the enhancements are aimed at improving quality of service for video streaming and high-priority interrupts. In addition, the standard continues to support distances up to one meter. The newer speeds may require higher power consumption for supporting chips, though improved process technologies and power management techniques may mitigate this. The later specification can use existing SATA cables and connectors, though it was reported in 2008 that some OEMs were expected to upgrade host connectors for the higher speeds. Released in

Context: Document [16](Title: Serial ATA) supply power to these drives. Connectors and cables present the most visible differences between SATA and parallel ATA drives. Unlike PATA, the same connectors are used on SATA hard disks (for desktop and server computers) and disks (for portable or small computers). Standard SATA connectors for both data and power have a conductor pitch of . Low insertion force is required to mate a SATA connector. A smaller mini-SATA or mSATA connector is used by smaller devices such as 1.8-inch SATA drives, some DVD and Blu-ray drives, and mini SSDs. A special eSATA connector is specified for external devices, and

Context: Document [17](Title: USB) transceivers. By contrast, the MIDI plug standard and Ethernet have built-in isolation to or more. The eSATA connector is a more robust SATA connector, intended for connection to external hard drives and SSDs. eSATA's transfer rate (up to 6 Gbit/s) is similar to that of USB 3.0 (up to 5 Gbit/s on current devices; 10 Gbit/s speeds via USB 3.1, announced on 31 July 2013). A device connected by eSATA appears as an ordinary SATA device, giving both full performance and full compatibility associated with internal drives. eSATA does not supply power to external devices. This is an increasing disadvantage

Context: Document [18](Title: Hard disk drive) is 3.0 Gbit/s SATA, which can send about 300 megabyte/s (10-bit encoding) from the buffer to the computer, and thus is still comfortably ahead of today's disk-to-buffer transfer rates. Data transfer rate (read/write) can be measured by writing a large file to disk using special file generator tools, then reading back the file. Transfer rate can be influenced by file system fragmentation and the layout of the files. HDD data transfer rate depends upon the rotational speed of the platters and the data recording density. Because heat and vibration limit rotational speed, advancing density becomes the main method to improve

Context: Document [19](Title: Serial ATA) voltage level and receiver operating range), as well as the physical coding subsystem (bit-level encoding, device detection on the wire, and link initialization). Physical transmission uses differential signaling. The SATA PHY contains a transmit pair and receive pair. When the SATA-link is not in use (example: no device attached), the transmitter allows the transmit pins to float to their common-mode voltage level. When the SATA-link is either active or in the link-initialization phase, the transmitter drives the transmit pins at the specified differential voltage (1.5 V in SATA/I). SATA physical coding uses a line encoding system known as 8b/10b encoding.

Context: Document [20](Title: Serial ATA) connectors are designed for hot swapping. Many server and RAID systems provide hardware support for transparent hot swapping. The designers of the SCSI standard prior to SCA-2 connectors did not target hot swapping, but in practice, most RAID implementations support hot swapping of hard disks. Serial ATA Serial ATA (SATA, abbreviated from Serial AT Attachment) is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives, optical drives, and solid-state drives. Serial ATA succeeded the older Parallel ATA (PATA) standard to become the predominant interface for storage devices. Serial ATA industry compatibility

Question: what is the transfer speed for sata 1?

Answer: 1.5 Gbit/s


Context: Document [1](Title: Western Digital Raptor) cables, as the SATA data connector does not have the required rails. Therefore, only normal cables can be plugged into these connectors. WD360GD Raptors with the Marvell 88i8030-TBC PATA to SATA bridge chip, such as WD360GD-00FNA0 (December 2003) and earlier, are limited to UDMA 5 transfers. In Linux, "applying bridge limits" is displayed and then it allows transfers up to UDMA/100. In Microsoft Windows, they are reported as UDMA 6, but give a burst rate of 104 MB/s, while WD360GD with the 88i8030-TBC1 chip are reported as UDMA 6 and give a burst rate of 122 MB/s, close their theoretical

Context: Document [2](Title: Serial ATA) 3.0 Gbit/s that, when accounted for the 8b/10b encoding scheme, equals to the maximum uncoded transfer rate of 2.4 Gbit/s (300 MB/s). The theoretical burst throughput of the SATA revision 2.0, which is also known as the SATA 3 Gbit/s, doubles the throughput of SATA revision 1.0. All SATA data cables meeting the SATA spec are rated for 3.0 Gbit/s and handle modern mechanical drives without any loss of sustained and burst data transfer performance. However, high-performance flash-based drives can exceed the SATA 3 Gbit/s transfer rate; this is addressed with the SATA 6 Gbit/s interoperability standard. Announced in August

Context: Document [3](Title: SATA Express) Express bus for achieving data transfer speeds greater than the SATA 3.0 speed limit of 6 Gbit/s. Designers of the SATA interface concluded that doubling the native SATA speed would take too much time to catch up with the advancements in solid-state drive (SSD) technology, would require too many changes to the SATA standard, and would result in a much greater power consumption compared with the existing PCI Express bus. As a widely adopted computer bus, PCI Express provides sufficient bandwidth while allowing easy scaling up by using faster or additional lanes. In addition to supporting legacy Advanced Host Controller

Context: Document [4](Title: SATA Express) in 2003), through 3 Gbit/s in SATA 2.0 (standardized in 2004), to 6 Gbit/s as provided by SATA 3.0 (standardized in 2009). SATA has also gradually been selected as the interface for more adopted solid-state drives (SSDs), but the need for a faster interface became apparent as the speed of SSDs and hybrid drives increased over time. As an example, some SSDs available in early 2009 were already well over the capabilities of SATA 1.0 and close to the SATA 2.0 maximum transfer speed, while in the second half of 2013 high-end consumer SSDs had already reached the SATA 3.0

Context: Document [5](Title: Serial ATA) Revision 1.0a was released on January 7, 2003. First-generation SATA interfaces, now known as SATA 1.5 Gbit/s, communicate at a rate of 1.5 Gbit/s, and do not support Native Command Queuing (NCQ). Taking 8b/10b encoding overhead into account, they have an actual uncoded transfer rate of 1.2 Gbit/s (150 MB/s). The theoretical burst throughput of SATA 1.5 Gbit/s is similar to that of PATA/133, but newer SATA devices offer enhancements such as NCQ, which improve performance in a multitasking environment.

Context: Document [6](Title: Serial ATA) are: Aimed at the consumer market, eSATA enters an external storage market served also by the USB and FireWire interfaces. The SATA interface has certain advantages. Most external hard-disk-drive cases with FireWire or USB interfaces use either PATA or SATA drives and "bridges" to translate between the drives' interfaces and the enclosures' external ports; this bridging incurs some inefficiency. Some single disks can transfer 157 MB/s during real use, about four times the maximum transfer rate of USB 2.0 or FireWire 400 (IEEE 1394a) and almost twice as fast as the maximum transfer rate of FireWire 800. The S3200 FireWire

Context: Document [7](Title: Serial ATA) 2005, SATA revision 2.5 consolidated the specification to a single document. Announced in February 2007, SATA revision 2.6 introduced the following features: Serial ATA International Organization (SATA-IO) presented the draft specification of SATA 6 Gbit/s physical layer in July 2008, and ratified its physical layer specification on August 18, 2008. The full 3.0 standard was released on May 27, 2009. Third-generation SATA interfaces run with a native transfer rate of 6.0 Gbit/s; taking 8b/10b encoding into account, the maximum uncoded transfer rate is 4.8 Gbit/s (600 MB/s). The theoretical burst throughput of SATA 6.0 Gbit/s is double that of SATA

Context: Document [8](Title: Serial ATA) support for "Serial ATA Tunneling Protocol"). SATA 3 Gbit/s theoretically offers a maximum bandwidth of 300 MB/s per device, which is only slightly lower than the rated speed for SCSI Ultra 320 with a maximum of 320 MB/s total for all devices on a bus. SCSI drives provide greater sustained throughput than multiple SATA drives connected via a simple (i.e., command-based) port multiplier because of disconnect-reconnect and aggregating performance. In general, SATA devices link compatibly to SAS enclosures and adapters, whereas SCSI devices cannot be directly connected to a SATA bus. SCSI, SAS, and fibre-channel (FC) drives are more expensive

Context: Document [9](Title: Serial ATA) wafer connectors on each end. SATA cables can have lengths up to , and connect one motherboard socket to one hard drive. PATA ribbon cables, in comparison, connect one motherboard socket to one or two hard drives, carry either 40 or 80 wires, and are limited to in length by the PATA specification; however, cables up to are readily available. Thus, SATA connectors and cables are easier to fit in closed spaces and reduce obstructions to air cooling. Although they are more susceptible to accidental unplugging and breakage than PATA, users can purchase cables that have a locking feature, whereby

Context: Document [10](Title: SATA Express) enables scaling up the performance of SATA Express interface by using multiple lanes and different versions of PCI Express. In more detail, using two PCI Express 2.0 lanes provides a total bandwidth of 1 GB/s (2 × 5 GT/s raw data rate and 8b/10b encoding, equating to effective 1000 MB/s), while using two PCI Express 3.0 lanes provides close to 2 GB/s (2 × 8 GT/s raw data rate and 128b/130b encoding, equating to effective 1969 MB/s). In comparison, the 6 Gbit/s raw bandwidth of SATA 3.0 equates effectively to 0.6 GB/s due to the overhead introduced by 8b/10b encoding.

Context: Document [11](Title: SATA Express) speed limit, requiring an even faster interface. While evaluating different approaches to the required speed increase, designers of the SATA interface concluded that extending the SATA interface so it doubles its native speed to 12 Gbit/s would require more than two years, making that approach unsuitable for catching up with advancements in SSD technology. At the same time, increasing the native SATA speed to 12 Gbit/s would require too many changes to the SATA standard, ending up in a more costly and less power efficient solution compared with the already available and widely adopted PCI Express bus. Thus, PCI Express

Context: Document [12](Title: PCI Express) this allows much higher transfer rates (over 1 GB/s) and IOPS (over one million I/O operations per second) when compared to Serial ATA or SAS drives. For example, in 2011 OCZ and Marvell co-developed a native PCI Express solid-state drive controller for a PCI Express 3.0 ×16 slot with maximum capacity of 12 TB and a performance of to 7.2 GB/s sequential transfers and up to 2.52 million IOPS in random transfers. SATA Express is an interface for connecting SSDs, by providing multiple PCI Express lanes as a pure PCI Express connection to the attached storage device. M.2 is a

Context: Document [13](Title: Serial ATA) the M.2 standard is a small form factor implementation of the SATA Express interface, with the addition of an internal USB 3.0 port. U.2, formerly known as SFF-8639. Like its predecessor it carries a PCI Express electrical signal, however U.2 uses a PCIe 3.0 ×4 link providing a higher bandwidth of 32 Gbit/s in each direction. In order to provide maximum backward compatibility the U.2 connector also supports SATA and multi-path SAS. The SATA specification defines three distinct protocol layers: physical, link, and transport. The physical layer defines SATA's electrical and physical characteristics (such as cable dimensions and parasitics, driver

Context: Document [14](Title: Serial ATA) The host connector is backward compatible with the standard 3.5-inch SATA data connector, allowing up to two legacy SATA devices to connect. At the same time, the host connector provides up to two PCI Express 3.0 lanes as a pure PCI Express connection to the storage device, allowing bandwidths of up to 2 GB/s. Instead of the otherwise usual approach of doubling the native speed of the SATA interface, PCI Express was selected for achieving data transfer speeds greater than 6 Gbit/s. It was concluded that doubling the native SATA speed would take too much time, too many changes would

Context: Document [15](Title: Serial ATA) revision 2.0. It is backward compatible with SATA 3 Gbit/s. The SATA 3.0 specification contains the following changes: In general, the enhancements are aimed at improving quality of service for video streaming and high-priority interrupts. In addition, the standard continues to support distances up to one meter. The newer speeds may require higher power consumption for supporting chips, though improved process technologies and power management techniques may mitigate this. The later specification can use existing SATA cables and connectors, though it was reported in 2008 that some OEMs were expected to upgrade host connectors for the higher speeds. Released in

Context: Document [16](Title: Serial ATA) supply power to these drives. Connectors and cables present the most visible differences between SATA and parallel ATA drives. Unlike PATA, the same connectors are used on SATA hard disks (for desktop and server computers) and disks (for portable or small computers). Standard SATA connectors for both data and power have a conductor pitch of . Low insertion force is required to mate a SATA connector. A smaller mini-SATA or mSATA connector is used by smaller devices such as 1.8-inch SATA drives, some DVD and Blu-ray drives, and mini SSDs. A special eSATA connector is specified for external devices, and

Context: Document [17](Title: USB) transceivers. By contrast, the MIDI plug standard and Ethernet have built-in isolation to or more. The eSATA connector is a more robust SATA connector, intended for connection to external hard drives and SSDs. eSATA's transfer rate (up to 6 Gbit/s) is similar to that of USB 3.0 (up to 5 Gbit/s on current devices; 10 Gbit/s speeds via USB 3.1, announced on 31 July 2013). A device connected by eSATA appears as an ordinary SATA device, giving both full performance and full compatibility associated with internal drives. eSATA does not supply power to external devices. This is an increasing disadvantage

Context: Document [18](Title: Hard disk drive) is 3.0 Gbit/s SATA, which can send about 300 megabyte/s (10-bit encoding) from the buffer to the computer, and thus is still comfortably ahead of today's disk-to-buffer transfer rates. Data transfer rate (read/write) can be measured by writing a large file to disk using special file generator tools, then reading back the file. Transfer rate can be influenced by file system fragmentation and the layout of the files. HDD data transfer rate depends upon the rotational speed of the platters and the data recording density. Because heat and vibration limit rotational speed, advancing density becomes the main method to improve

Context: Document [19](Title: Serial ATA) voltage level and receiver operating range), as well as the physical coding subsystem (bit-level encoding, device detection on the wire, and link initialization). Physical transmission uses differential signaling. The SATA PHY contains a transmit pair and receive pair. When the SATA-link is not in use (example: no device attached), the transmitter allows the transmit pins to float to their common-mode voltage level. When the SATA-link is either active or in the link-initialization phase, the transmitter drives the transmit pins at the specified differential voltage (1.5 V in SATA/I). SATA physical coding uses a line encoding system known as 8b/10b encoding.

Context: Document [20](Title: Serial ATA) connectors are designed for hot swapping. Many server and RAID systems provide hardware support for transparent hot swapping. The designers of the SCSI standard prior to SCA-2 connectors did not target hot swapping, but in practice, most RAID implementations support hot swapping of hard disks. Serial ATA Serial ATA (SATA, abbreviated from Serial AT Attachment) is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives, optical drives, and solid-state drives. Serial ATA succeeded the older Parallel ATA (PATA) standard to become the predominant interface for storage devices. Serial ATA industry compatibility

Question: what is the transfer speed for sata 1?

Answer: 1.5 Gbit/s


Context: Document [1](Title: Western Digital Raptor) cables, as the SATA data connector does not have the required rails. Therefore, only normal cables can be plugged into these connectors. WD360GD Raptors with the Marvell 88i8030-TBC PATA to SATA bridge chip, such as WD360GD-00FNA0 (December 2003) and earlier, are limited to UDMA 5 transfers. In Linux, "applying bridge limits" is displayed and then it allows transfers up to UDMA/100. In Microsoft Windows, they are reported as UDMA 6, but give a burst rate of 104 MB/s, while WD360GD with the 88i8030-TBC1 chip are reported as UDMA 6 and give a burst rate of 122 MB/s, close their theoretical

Context: Document [2](Title: Serial ATA) 3.0 Gbit/s that, when accounted for the 8b/10b encoding scheme, equals to the maximum uncoded transfer rate of 2.4 Gbit/s (300 MB/s). The theoretical burst throughput of the SATA revision 2.0, which is also known as the SATA 3 Gbit/s, doubles the throughput of SATA revision 1.0. All SATA data cables meeting the SATA spec are rated for 3.0 Gbit/s and handle modern mechanical drives without any loss of sustained and burst data transfer performance. However, high-performance flash-based drives can exceed the SATA 3 Gbit/s transfer rate; this is addressed with the SATA 6 Gbit/s interoperability standard. Announced in August

Context: Document [3](Title: SATA Express) Express bus for achieving data transfer speeds greater than the SATA 3.0 speed limit of 6 Gbit/s. Designers of the SATA interface concluded that doubling the native SATA speed would take too much time to catch up with the advancements in solid-state drive (SSD) technology, would require too many changes to the SATA standard, and would result in a much greater power consumption compared with the existing PCI Express bus. As a widely adopted computer bus, PCI Express provides sufficient bandwidth while allowing easy scaling up by using faster or additional lanes. In addition to supporting legacy Advanced Host Controller

Context: Document [4](Title: SATA Express) in 2003), through 3 Gbit/s in SATA 2.0 (standardized in 2004), to 6 Gbit/s as provided by SATA 3.0 (standardized in 2009). SATA has also gradually been selected as the interface for more adopted solid-state drives (SSDs), but the need for a faster interface became apparent as the speed of SSDs and hybrid drives increased over time. As an example, some SSDs available in early 2009 were already well over the capabilities of SATA 1.0 and close to the SATA 2.0 maximum transfer speed, while in the second half of 2013 high-end consumer SSDs had already reached the SATA 3.0

Context: Document [5](Title: Serial ATA) are: Aimed at the consumer market, eSATA enters an external storage market served also by the USB and FireWire interfaces. The SATA interface has certain advantages. Most external hard-disk-drive cases with FireWire or USB interfaces use either PATA or SATA drives and "bridges" to translate between the drives' interfaces and the enclosures' external ports; this bridging incurs some inefficiency. Some single disks can transfer 157 MB/s during real use, about four times the maximum transfer rate of USB 2.0 or FireWire 400 (IEEE 1394a) and almost twice as fast as the maximum transfer rate of FireWire 800. The S3200 FireWire

Context: Document [6](Title: Serial ATA) 2005, SATA revision 2.5 consolidated the specification to a single document. Announced in February 2007, SATA revision 2.6 introduced the following features: Serial ATA International Organization (SATA-IO) presented the draft specification of SATA 6 Gbit/s physical layer in July 2008, and ratified its physical layer specification on August 18, 2008. The full 3.0 standard was released on May 27, 2009. Third-generation SATA interfaces run with a native transfer rate of 6.0 Gbit/s; taking 8b/10b encoding into account, the maximum uncoded transfer rate is 4.8 Gbit/s (600 MB/s). The theoretical burst throughput of SATA 6.0 Gbit/s is double that of SATA

Context: Document [7](Title: Serial ATA) support for "Serial ATA Tunneling Protocol"). SATA 3 Gbit/s theoretically offers a maximum bandwidth of 300 MB/s per device, which is only slightly lower than the rated speed for SCSI Ultra 320 with a maximum of 320 MB/s total for all devices on a bus. SCSI drives provide greater sustained throughput than multiple SATA drives connected via a simple (i.e., command-based) port multiplier because of disconnect-reconnect and aggregating performance. In general, SATA devices link compatibly to SAS enclosures and adapters, whereas SCSI devices cannot be directly connected to a SATA bus. SCSI, SAS, and fibre-channel (FC) drives are more expensive

Context: Document [8](Title: Serial ATA) wafer connectors on each end. SATA cables can have lengths up to , and connect one motherboard socket to one hard drive. PATA ribbon cables, in comparison, connect one motherboard socket to one or two hard drives, carry either 40 or 80 wires, and are limited to in length by the PATA specification; however, cables up to are readily available. Thus, SATA connectors and cables are easier to fit in closed spaces and reduce obstructions to air cooling. Although they are more susceptible to accidental unplugging and breakage than PATA, users can purchase cables that have a locking feature, whereby

Context: Document [9](Title: SATA Express) enables scaling up the performance of SATA Express interface by using multiple lanes and different versions of PCI Express. In more detail, using two PCI Express 2.0 lanes provides a total bandwidth of 1 GB/s (2 × 5 GT/s raw data rate and 8b/10b encoding, equating to effective 1000 MB/s), while using two PCI Express 3.0 lanes provides close to 2 GB/s (2 × 8 GT/s raw data rate and 128b/130b encoding, equating to effective 1969 MB/s). In comparison, the 6 Gbit/s raw bandwidth of SATA 3.0 equates effectively to 0.6 GB/s due to the overhead introduced by 8b/10b encoding.

Context: Document [10](Title: Serial ATA) Revision 1.0a was released on January 7, 2003. First-generation SATA interfaces, now known as SATA 1.5 Gbit/s, communicate at a rate of 1.5 Gbit/s, and do not support Native Command Queuing (NCQ). Taking 8b/10b encoding overhead into account, they have an actual uncoded transfer rate of 1.2 Gbit/s (150 MB/s). The theoretical burst throughput of SATA 1.5 Gbit/s is similar to that of PATA/133, but newer SATA devices offer enhancements such as NCQ, which improve performance in a multitasking environment.

Context: Document [11](Title: SATA Express) speed limit, requiring an even faster interface. While evaluating different approaches to the required speed increase, designers of the SATA interface concluded that extending the SATA interface so it doubles its native speed to 12 Gbit/s would require more than two years, making that approach unsuitable for catching up with advancements in SSD technology. At the same time, increasing the native SATA speed to 12 Gbit/s would require too many changes to the SATA standard, ending up in a more costly and less power efficient solution compared with the already available and widely adopted PCI Express bus. Thus, PCI Express

Context: Document [12](Title: PCI Express) this allows much higher transfer rates (over 1 GB/s) and IOPS (over one million I/O operations per second) when compared to Serial ATA or SAS drives. For example, in 2011 OCZ and Marvell co-developed a native PCI Express solid-state drive controller for a PCI Express 3.0 ×16 slot with maximum capacity of 12 TB and a performance of to 7.2 GB/s sequential transfers and up to 2.52 million IOPS in random transfers. SATA Express is an interface for connecting SSDs, by providing multiple PCI Express lanes as a pure PCI Express connection to the attached storage device. M.2 is a

Context: Document [13](Title: Serial ATA) the M.2 standard is a small form factor implementation of the SATA Express interface, with the addition of an internal USB 3.0 port. U.2, formerly known as SFF-8639. Like its predecessor it carries a PCI Express electrical signal, however U.2 uses a PCIe 3.0 ×4 link providing a higher bandwidth of 32 Gbit/s in each direction. In order to provide maximum backward compatibility the U.2 connector also supports SATA and multi-path SAS. The SATA specification defines three distinct protocol layers: physical, link, and transport. The physical layer defines SATA's electrical and physical characteristics (such as cable dimensions and parasitics, driver

Context: Document [14](Title: Serial ATA) The host connector is backward compatible with the standard 3.5-inch SATA data connector, allowing up to two legacy SATA devices to connect. At the same time, the host connector provides up to two PCI Express 3.0 lanes as a pure PCI Express connection to the storage device, allowing bandwidths of up to 2 GB/s. Instead of the otherwise usual approach of doubling the native speed of the SATA interface, PCI Express was selected for achieving data transfer speeds greater than 6 Gbit/s. It was concluded that doubling the native SATA speed would take too much time, too many changes would

Context: Document [15](Title: Serial ATA) revision 2.0. It is backward compatible with SATA 3 Gbit/s. The SATA 3.0 specification contains the following changes: In general, the enhancements are aimed at improving quality of service for video streaming and high-priority interrupts. In addition, the standard continues to support distances up to one meter. The newer speeds may require higher power consumption for supporting chips, though improved process technologies and power management techniques may mitigate this. The later specification can use existing SATA cables and connectors, though it was reported in 2008 that some OEMs were expected to upgrade host connectors for the higher speeds. Released in

Context: Document [16](Title: Serial ATA) supply power to these drives. Connectors and cables present the most visible differences between SATA and parallel ATA drives. Unlike PATA, the same connectors are used on SATA hard disks (for desktop and server computers) and disks (for portable or small computers). Standard SATA connectors for both data and power have a conductor pitch of . Low insertion force is required to mate a SATA connector. A smaller mini-SATA or mSATA connector is used by smaller devices such as 1.8-inch SATA drives, some DVD and Blu-ray drives, and mini SSDs. A special eSATA connector is specified for external devices, and

Context: Document [17](Title: USB) transceivers. By contrast, the MIDI plug standard and Ethernet have built-in isolation to or more. The eSATA connector is a more robust SATA connector, intended for connection to external hard drives and SSDs. eSATA's transfer rate (up to 6 Gbit/s) is similar to that of USB 3.0 (up to 5 Gbit/s on current devices; 10 Gbit/s speeds via USB 3.1, announced on 31 July 2013). A device connected by eSATA appears as an ordinary SATA device, giving both full performance and full compatibility associated with internal drives. eSATA does not supply power to external devices. This is an increasing disadvantage

Context: Document [18](Title: Hard disk drive) is 3.0 Gbit/s SATA, which can send about 300 megabyte/s (10-bit encoding) from the buffer to the computer, and thus is still comfortably ahead of today's disk-to-buffer transfer rates. Data transfer rate (read/write) can be measured by writing a large file to disk using special file generator tools, then reading back the file. Transfer rate can be influenced by file system fragmentation and the layout of the files. HDD data transfer rate depends upon the rotational speed of the platters and the data recording density. Because heat and vibration limit rotational speed, advancing density becomes the main method to improve

Context: Document [19](Title: Serial ATA) voltage level and receiver operating range), as well as the physical coding subsystem (bit-level encoding, device detection on the wire, and link initialization). Physical transmission uses differential signaling. The SATA PHY contains a transmit pair and receive pair. When the SATA-link is not in use (example: no device attached), the transmitter allows the transmit pins to float to their common-mode voltage level. When the SATA-link is either active or in the link-initialization phase, the transmitter drives the transmit pins at the specified differential voltage (1.5 V in SATA/I). SATA physical coding uses a line encoding system known as 8b/10b encoding.

Context: Document [20](Title: Serial ATA) connectors are designed for hot swapping. Many server and RAID systems provide hardware support for transparent hot swapping. The designers of the SCSI standard prior to SCA-2 connectors did not target hot swapping, but in practice, most RAID implementations support hot swapping of hard disks. Serial ATA Serial ATA (SATA, abbreviated from Serial AT Attachment) is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives, optical drives, and solid-state drives. Serial ATA succeeded the older Parallel ATA (PATA) standard to become the predominant interface for storage devices. Serial ATA industry compatibility

Question: what is the transfer speed for sata 1?

Answer: 1.5 Gbit/s


Context: Document [1](Title: Western Digital Raptor) cables, as the SATA data connector does not have the required rails. Therefore, only normal cables can be plugged into these connectors. WD360GD Raptors with the Marvell 88i8030-TBC PATA to SATA bridge chip, such as WD360GD-00FNA0 (December 2003) and earlier, are limited to UDMA 5 transfers. In Linux, "applying bridge limits" is displayed and then it allows transfers up to UDMA/100. In Microsoft Windows, they are reported as UDMA 6, but give a burst rate of 104 MB/s, while WD360GD with the 88i8030-TBC1 chip are reported as UDMA 6 and give a burst rate of 122 MB/s, close their theoretical

Context: Document [2](Title: Serial ATA) 3.0 Gbit/s that, when accounted for the 8b/10b encoding scheme, equals to the maximum uncoded transfer rate of 2.4 Gbit/s (300 MB/s). The theoretical burst throughput of the SATA revision 2.0, which is also known as the SATA 3 Gbit/s, doubles the throughput of SATA revision 1.0. All SATA data cables meeting the SATA spec are rated for 3.0 Gbit/s and handle modern mechanical drives without any loss of sustained and burst data transfer performance. However, high-performance flash-based drives can exceed the SATA 3 Gbit/s transfer rate; this is addressed with the SATA 6 Gbit/s interoperability standard. Announced in August

Context: Document [3](Title: SATA Express) Express bus for achieving data transfer speeds greater than the SATA 3.0 speed limit of 6 Gbit/s. Designers of the SATA interface concluded that doubling the native SATA speed would take too much time to catch up with the advancements in solid-state drive (SSD) technology, would require too many changes to the SATA standard, and would result in a much greater power consumption compared with the existing PCI Express bus. As a widely adopted computer bus, PCI Express provides sufficient bandwidth while allowing easy scaling up by using faster or additional lanes. In addition to supporting legacy Advanced Host Controller

Context: Document [4](Title: SATA Express) in 2003), through 3 Gbit/s in SATA 2.0 (standardized in 2004), to 6 Gbit/s as provided by SATA 3.0 (standardized in 2009). SATA has also gradually been selected as the interface for more adopted solid-state drives (SSDs), but the need for a faster interface became apparent as the speed of SSDs and hybrid drives increased over time. As an example, some SSDs available in early 2009 were already well over the capabilities of SATA 1.0 and close to the SATA 2.0 maximum transfer speed, while in the second half of 2013 high-end consumer SSDs had already reached the SATA 3.0

Context: Document [5](Title: Serial ATA) are: Aimed at the consumer market, eSATA enters an external storage market served also by the USB and FireWire interfaces. The SATA interface has certain advantages. Most external hard-disk-drive cases with FireWire or USB interfaces use either PATA or SATA drives and "bridges" to translate between the drives' interfaces and the enclosures' external ports; this bridging incurs some inefficiency. Some single disks can transfer 157 MB/s during real use, about four times the maximum transfer rate of USB 2.0 or FireWire 400 (IEEE 1394a) and almost twice as fast as the maximum transfer rate of FireWire 800. The S3200 FireWire

Context: Document [6](Title: Serial ATA) 2005, SATA revision 2.5 consolidated the specification to a single document. Announced in February 2007, SATA revision 2.6 introduced the following features: Serial ATA International Organization (SATA-IO) presented the draft specification of SATA 6 Gbit/s physical layer in July 2008, and ratified its physical layer specification on August 18, 2008. The full 3.0 standard was released on May 27, 2009. Third-generation SATA interfaces run with a native transfer rate of 6.0 Gbit/s; taking 8b/10b encoding into account, the maximum uncoded transfer rate is 4.8 Gbit/s (600 MB/s). The theoretical burst throughput of SATA 6.0 Gbit/s is double that of SATA

Context: Document [7](Title: Serial ATA) support for "Serial ATA Tunneling Protocol"). SATA 3 Gbit/s theoretically offers a maximum bandwidth of 300 MB/s per device, which is only slightly lower than the rated speed for SCSI Ultra 320 with a maximum of 320 MB/s total for all devices on a bus. SCSI drives provide greater sustained throughput than multiple SATA drives connected via a simple (i.e., command-based) port multiplier because of disconnect-reconnect and aggregating performance. In general, SATA devices link compatibly to SAS enclosures and adapters, whereas SCSI devices cannot be directly connected to a SATA bus. SCSI, SAS, and fibre-channel (FC) drives are more expensive

Context: Document [8](Title: Serial ATA) wafer connectors on each end. SATA cables can have lengths up to , and connect one motherboard socket to one hard drive. PATA ribbon cables, in comparison, connect one motherboard socket to one or two hard drives, carry either 40 or 80 wires, and are limited to in length by the PATA specification; however, cables up to are readily available. Thus, SATA connectors and cables are easier to fit in closed spaces and reduce obstructions to air cooling. Although they are more susceptible to accidental unplugging and breakage than PATA, users can purchase cables that have a locking feature, whereby

Context: Document [9](Title: SATA Express) enables scaling up the performance of SATA Express interface by using multiple lanes and different versions of PCI Express. In more detail, using two PCI Express 2.0 lanes provides a total bandwidth of 1 GB/s (2 × 5 GT/s raw data rate and 8b/10b encoding, equating to effective 1000 MB/s), while using two PCI Express 3.0 lanes provides close to 2 GB/s (2 × 8 GT/s raw data rate and 128b/130b encoding, equating to effective 1969 MB/s). In comparison, the 6 Gbit/s raw bandwidth of SATA 3.0 equates effectively to 0.6 GB/s due to the overhead introduced by 8b/10b encoding.

Context: Document [10](Title: SATA Express) speed limit, requiring an even faster interface. While evaluating different approaches to the required speed increase, designers of the SATA interface concluded that extending the SATA interface so it doubles its native speed to 12 Gbit/s would require more than two years, making that approach unsuitable for catching up with advancements in SSD technology. At the same time, increasing the native SATA speed to 12 Gbit/s would require too many changes to the SATA standard, ending up in a more costly and less power efficient solution compared with the already available and widely adopted PCI Express bus. Thus, PCI Express

Context: Document [11](Title: PCI Express) this allows much higher transfer rates (over 1 GB/s) and IOPS (over one million I/O operations per second) when compared to Serial ATA or SAS drives. For example, in 2011 OCZ and Marvell co-developed a native PCI Express solid-state drive controller for a PCI Express 3.0 ×16 slot with maximum capacity of 12 TB and a performance of to 7.2 GB/s sequential transfers and up to 2.52 million IOPS in random transfers. SATA Express is an interface for connecting SSDs, by providing multiple PCI Express lanes as a pure PCI Express connection to the attached storage device. M.2 is a

Context: Document [12](Title: Serial ATA) the M.2 standard is a small form factor implementation of the SATA Express interface, with the addition of an internal USB 3.0 port. U.2, formerly known as SFF-8639. Like its predecessor it carries a PCI Express electrical signal, however U.2 uses a PCIe 3.0 ×4 link providing a higher bandwidth of 32 Gbit/s in each direction. In order to provide maximum backward compatibility the U.2 connector also supports SATA and multi-path SAS. The SATA specification defines three distinct protocol layers: physical, link, and transport. The physical layer defines SATA's electrical and physical characteristics (such as cable dimensions and parasitics, driver

Context: Document [13](Title: Serial ATA) The host connector is backward compatible with the standard 3.5-inch SATA data connector, allowing up to two legacy SATA devices to connect. At the same time, the host connector provides up to two PCI Express 3.0 lanes as a pure PCI Express connection to the storage device, allowing bandwidths of up to 2 GB/s. Instead of the otherwise usual approach of doubling the native speed of the SATA interface, PCI Express was selected for achieving data transfer speeds greater than 6 Gbit/s. It was concluded that doubling the native SATA speed would take too much time, too many changes would

Context: Document [14](Title: Serial ATA) revision 2.0. It is backward compatible with SATA 3 Gbit/s. The SATA 3.0 specification contains the following changes: In general, the enhancements are aimed at improving quality of service for video streaming and high-priority interrupts. In addition, the standard continues to support distances up to one meter. The newer speeds may require higher power consumption for supporting chips, though improved process technologies and power management techniques may mitigate this. The later specification can use existing SATA cables and connectors, though it was reported in 2008 that some OEMs were expected to upgrade host connectors for the higher speeds. Released in

Context: Document [15](Title: Serial ATA) Revision 1.0a was released on January 7, 2003. First-generation SATA interfaces, now known as SATA 1.5 Gbit/s, communicate at a rate of 1.5 Gbit/s, and do not support Native Command Queuing (NCQ). Taking 8b/10b encoding overhead into account, they have an actual uncoded transfer rate of 1.2 Gbit/s (150 MB/s). The theoretical burst throughput of SATA 1.5 Gbit/s is similar to that of PATA/133, but newer SATA devices offer enhancements such as NCQ, which improve performance in a multitasking environment.

Context: Document [16](Title: Serial ATA) supply power to these drives. Connectors and cables present the most visible differences between SATA and parallel ATA drives. Unlike PATA, the same connectors are used on SATA hard disks (for desktop and server computers) and disks (for portable or small computers). Standard SATA connectors for both data and power have a conductor pitch of . Low insertion force is required to mate a SATA connector. A smaller mini-SATA or mSATA connector is used by smaller devices such as 1.8-inch SATA drives, some DVD and Blu-ray drives, and mini SSDs. A special eSATA connector is specified for external devices, and

Context: Document [17](Title: USB) transceivers. By contrast, the MIDI plug standard and Ethernet have built-in isolation to or more. The eSATA connector is a more robust SATA connector, intended for connection to external hard drives and SSDs. eSATA's transfer rate (up to 6 Gbit/s) is similar to that of USB 3.0 (up to 5 Gbit/s on current devices; 10 Gbit/s speeds via USB 3.1, announced on 31 July 2013). A device connected by eSATA appears as an ordinary SATA device, giving both full performance and full compatibility associated with internal drives. eSATA does not supply power to external devices. This is an increasing disadvantage

Context: Document [18](Title: Hard disk drive) is 3.0 Gbit/s SATA, which can send about 300 megabyte/s (10-bit encoding) from the buffer to the computer, and thus is still comfortably ahead of today's disk-to-buffer transfer rates. Data transfer rate (read/write) can be measured by writing a large file to disk using special file generator tools, then reading back the file. Transfer rate can be influenced by file system fragmentation and the layout of the files. HDD data transfer rate depends upon the rotational speed of the platters and the data recording density. Because heat and vibration limit rotational speed, advancing density becomes the main method to improve

Context: Document [19](Title: Serial ATA) voltage level and receiver operating range), as well as the physical coding subsystem (bit-level encoding, device detection on the wire, and link initialization). Physical transmission uses differential signaling. The SATA PHY contains a transmit pair and receive pair. When the SATA-link is not in use (example: no device attached), the transmitter allows the transmit pins to float to their common-mode voltage level. When the SATA-link is either active or in the link-initialization phase, the transmitter drives the transmit pins at the specified differential voltage (1.5 V in SATA/I). SATA physical coding uses a line encoding system known as 8b/10b encoding.

Context: Document [20](Title: Serial ATA) connectors are designed for hot swapping. Many server and RAID systems provide hardware support for transparent hot swapping. The designers of the SCSI standard prior to SCA-2 connectors did not target hot swapping, but in practice, most RAID implementations support hot swapping of hard disks. Serial ATA Serial ATA (SATA, abbreviated from Serial AT Attachment) is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives, optical drives, and solid-state drives. Serial ATA succeeded the older Parallel ATA (PATA) standard to become the predominant interface for storage devices. Serial ATA industry compatibility

Question: what is the transfer speed for sata 1?

Answer: 1.5 Gbit/s


Context: Document [1](Title: Western Digital Raptor) cables, as the SATA data connector does not have the required rails. Therefore, only normal cables can be plugged into these connectors. WD360GD Raptors with the Marvell 88i8030-TBC PATA to SATA bridge chip, such as WD360GD-00FNA0 (December 2003) and earlier, are limited to UDMA 5 transfers. In Linux, "applying bridge limits" is displayed and then it allows transfers up to UDMA/100. In Microsoft Windows, they are reported as UDMA 6, but give a burst rate of 104 MB/s, while WD360GD with the 88i8030-TBC1 chip are reported as UDMA 6 and give a burst rate of 122 MB/s, close their theoretical

Context: Document [2](Title: Serial ATA) 3.0 Gbit/s that, when accounted for the 8b/10b encoding scheme, equals to the maximum uncoded transfer rate of 2.4 Gbit/s (300 MB/s). The theoretical burst throughput of the SATA revision 2.0, which is also known as the SATA 3 Gbit/s, doubles the throughput of SATA revision 1.0. All SATA data cables meeting the SATA spec are rated for 3.0 Gbit/s and handle modern mechanical drives without any loss of sustained and burst data transfer performance. However, high-performance flash-based drives can exceed the SATA 3 Gbit/s transfer rate; this is addressed with the SATA 6 Gbit/s interoperability standard. Announced in August

Context: Document [3](Title: SATA Express) Express bus for achieving data transfer speeds greater than the SATA 3.0 speed limit of 6 Gbit/s. Designers of the SATA interface concluded that doubling the native SATA speed would take too much time to catch up with the advancements in solid-state drive (SSD) technology, would require too many changes to the SATA standard, and would result in a much greater power consumption compared with the existing PCI Express bus. As a widely adopted computer bus, PCI Express provides sufficient bandwidth while allowing easy scaling up by using faster or additional lanes. In addition to supporting legacy Advanced Host Controller

Context: Document [4](Title: SATA Express) in 2003), through 3 Gbit/s in SATA 2.0 (standardized in 2004), to 6 Gbit/s as provided by SATA 3.0 (standardized in 2009). SATA has also gradually been selected as the interface for more adopted solid-state drives (SSDs), but the need for a faster interface became apparent as the speed of SSDs and hybrid drives increased over time. As an example, some SSDs available in early 2009 were already well over the capabilities of SATA 1.0 and close to the SATA 2.0 maximum transfer speed, while in the second half of 2013 high-end consumer SSDs had already reached the SATA 3.0

Context: Document [5](Title: Serial ATA) are: Aimed at the consumer market, eSATA enters an external storage market served also by the USB and FireWire interfaces. The SATA interface has certain advantages. Most external hard-disk-drive cases with FireWire or USB interfaces use either PATA or SATA drives and "bridges" to translate between the drives' interfaces and the enclosures' external ports; this bridging incurs some inefficiency. Some single disks can transfer 157 MB/s during real use, about four times the maximum transfer rate of USB 2.0 or FireWire 400 (IEEE 1394a) and almost twice as fast as the maximum transfer rate of FireWire 800. The S3200 FireWire

Context: Document [6](Title: Serial ATA) 2005, SATA revision 2.5 consolidated the specification to a single document. Announced in February 2007, SATA revision 2.6 introduced the following features: Serial ATA International Organization (SATA-IO) presented the draft specification of SATA 6 Gbit/s physical layer in July 2008, and ratified its physical layer specification on August 18, 2008. The full 3.0 standard was released on May 27, 2009. Third-generation SATA interfaces run with a native transfer rate of 6.0 Gbit/s; taking 8b/10b encoding into account, the maximum uncoded transfer rate is 4.8 Gbit/s (600 MB/s). The theoretical burst throughput of SATA 6.0 Gbit/s is double that of SATA

Context: Document [7](Title: Serial ATA) support for "Serial ATA Tunneling Protocol"). SATA 3 Gbit/s theoretically offers a maximum bandwidth of 300 MB/s per device, which is only slightly lower than the rated speed for SCSI Ultra 320 with a maximum of 320 MB/s total for all devices on a bus. SCSI drives provide greater sustained throughput than multiple SATA drives connected via a simple (i.e., command-based) port multiplier because of disconnect-reconnect and aggregating performance. In general, SATA devices link compatibly to SAS enclosures and adapters, whereas SCSI devices cannot be directly connected to a SATA bus. SCSI, SAS, and fibre-channel (FC) drives are more expensive

Context: Document [8](Title: Serial ATA) wafer connectors on each end. SATA cables can have lengths up to , and connect one motherboard socket to one hard drive. PATA ribbon cables, in comparison, connect one motherboard socket to one or two hard drives, carry either 40 or 80 wires, and are limited to in length by the PATA specification; however, cables up to are readily available. Thus, SATA connectors and cables are easier to fit in closed spaces and reduce obstructions to air cooling. Although they are more susceptible to accidental unplugging and breakage than PATA, users can purchase cables that have a locking feature, whereby

Context: Document [9](Title: SATA Express) enables scaling up the performance of SATA Express interface by using multiple lanes and different versions of PCI Express. In more detail, using two PCI Express 2.0 lanes provides a total bandwidth of 1 GB/s (2 × 5 GT/s raw data rate and 8b/10b encoding, equating to effective 1000 MB/s), while using two PCI Express 3.0 lanes provides close to 2 GB/s (2 × 8 GT/s raw data rate and 128b/130b encoding, equating to effective 1969 MB/s). In comparison, the 6 Gbit/s raw bandwidth of SATA 3.0 equates effectively to 0.6 GB/s due to the overhead introduced by 8b/10b encoding.

Context: Document [10](Title: SATA Express) speed limit, requiring an even faster interface. While evaluating different approaches to the required speed increase, designers of the SATA interface concluded that extending the SATA interface so it doubles its native speed to 12 Gbit/s would require more than two years, making that approach unsuitable for catching up with advancements in SSD technology. At the same time, increasing the native SATA speed to 12 Gbit/s would require too many changes to the SATA standard, ending up in a more costly and less power efficient solution compared with the already available and widely adopted PCI Express bus. Thus, PCI Express

Context: Document [11](Title: PCI Express) this allows much higher transfer rates (over 1 GB/s) and IOPS (over one million I/O operations per second) when compared to Serial ATA or SAS drives. For example, in 2011 OCZ and Marvell co-developed a native PCI Express solid-state drive controller for a PCI Express 3.0 ×16 slot with maximum capacity of 12 TB and a performance of to 7.2 GB/s sequential transfers and up to 2.52 million IOPS in random transfers. SATA Express is an interface for connecting SSDs, by providing multiple PCI Express lanes as a pure PCI Express connection to the attached storage device. M.2 is a

Context: Document [12](Title: Serial ATA) the M.2 standard is a small form factor implementation of the SATA Express interface, with the addition of an internal USB 3.0 port. U.2, formerly known as SFF-8639. Like its predecessor it carries a PCI Express electrical signal, however U.2 uses a PCIe 3.0 ×4 link providing a higher bandwidth of 32 Gbit/s in each direction. In order to provide maximum backward compatibility the U.2 connector also supports SATA and multi-path SAS. The SATA specification defines three distinct protocol layers: physical, link, and transport. The physical layer defines SATA's electrical and physical characteristics (such as cable dimensions and parasitics, driver

Context: Document [13](Title: Serial ATA) The host connector is backward compatible with the standard 3.5-inch SATA data connector, allowing up to two legacy SATA devices to connect. At the same time, the host connector provides up to two PCI Express 3.0 lanes as a pure PCI Express connection to the storage device, allowing bandwidths of up to 2 GB/s. Instead of the otherwise usual approach of doubling the native speed of the SATA interface, PCI Express was selected for achieving data transfer speeds greater than 6 Gbit/s. It was concluded that doubling the native SATA speed would take too much time, too many changes would

Context: Document [14](Title: Serial ATA) revision 2.0. It is backward compatible with SATA 3 Gbit/s. The SATA 3.0 specification contains the following changes: In general, the enhancements are aimed at improving quality of service for video streaming and high-priority interrupts. In addition, the standard continues to support distances up to one meter. The newer speeds may require higher power consumption for supporting chips, though improved process technologies and power management techniques may mitigate this. The later specification can use existing SATA cables and connectors, though it was reported in 2008 that some OEMs were expected to upgrade host connectors for the higher speeds. Released in

Context: Document [15](Title: Serial ATA) supply power to these drives. Connectors and cables present the most visible differences between SATA and parallel ATA drives. Unlike PATA, the same connectors are used on SATA hard disks (for desktop and server computers) and disks (for portable or small computers). Standard SATA connectors for both data and power have a conductor pitch of . Low insertion force is required to mate a SATA connector. A smaller mini-SATA or mSATA connector is used by smaller devices such as 1.8-inch SATA drives, some DVD and Blu-ray drives, and mini SSDs. A special eSATA connector is specified for external devices, and

Context: Document [16](Title: USB) transceivers. By contrast, the MIDI plug standard and Ethernet have built-in isolation to or more. The eSATA connector is a more robust SATA connector, intended for connection to external hard drives and SSDs. eSATA's transfer rate (up to 6 Gbit/s) is similar to that of USB 3.0 (up to 5 Gbit/s on current devices; 10 Gbit/s speeds via USB 3.1, announced on 31 July 2013). A device connected by eSATA appears as an ordinary SATA device, giving both full performance and full compatibility associated with internal drives. eSATA does not supply power to external devices. This is an increasing disadvantage

Context: Document [17](Title: Hard disk drive) is 3.0 Gbit/s SATA, which can send about 300 megabyte/s (10-bit encoding) from the buffer to the computer, and thus is still comfortably ahead of today's disk-to-buffer transfer rates. Data transfer rate (read/write) can be measured by writing a large file to disk using special file generator tools, then reading back the file. Transfer rate can be influenced by file system fragmentation and the layout of the files. HDD data transfer rate depends upon the rotational speed of the platters and the data recording density. Because heat and vibration limit rotational speed, advancing density becomes the main method to improve

Context: Document [18](Title: Serial ATA) voltage level and receiver operating range), as well as the physical coding subsystem (bit-level encoding, device detection on the wire, and link initialization). Physical transmission uses differential signaling. The SATA PHY contains a transmit pair and receive pair. When the SATA-link is not in use (example: no device attached), the transmitter allows the transmit pins to float to their common-mode voltage level. When the SATA-link is either active or in the link-initialization phase, the transmitter drives the transmit pins at the specified differential voltage (1.5 V in SATA/I). SATA physical coding uses a line encoding system known as 8b/10b encoding.

Context: Document [19](Title: Serial ATA) connectors are designed for hot swapping. Many server and RAID systems provide hardware support for transparent hot swapping. The designers of the SCSI standard prior to SCA-2 connectors did not target hot swapping, but in practice, most RAID implementations support hot swapping of hard disks. Serial ATA Serial ATA (SATA, abbreviated from Serial AT Attachment) is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives, optical drives, and solid-state drives. Serial ATA succeeded the older Parallel ATA (PATA) standard to become the predominant interface for storage devices. Serial ATA industry compatibility

Context: Document [20](Title: Serial ATA) Revision 1.0a was released on January 7, 2003. First-generation SATA interfaces, now known as SATA 1.5 Gbit/s, communicate at a rate of 1.5 Gbit/s, and do not support Native Command Queuing (NCQ). Taking 8b/10b encoding overhead into account, they have an actual uncoded transfer rate of 1.2 Gbit/s (150 MB/s). The theoretical burst throughput of SATA 1.5 Gbit/s is similar to that of PATA/133, but newer SATA devices offer enhancements such as NCQ, which improve performance in a multitasking environment.

Question: what is the transfer speed for sata 1?

Answer: 1.5 Gbit/s


Context: Document [1](Title: History of the Ottoman Empire during World War I) On 30 October 1918, the Armistice of Mudros was signed, ending Ottoman involvement in World War 1. The Ottoman public, however, was given misleadingly positive impressions of the severity of the terms of the Armistice. They thought its terms were considerably more lenient than they actually were, a source of discontent later that the Allies had betrayed the offered terms.

Context: Document [2](Title: Eastern Question) Eastern Question was put to rest after World War I, one of the outcomes of which was the collapse and division of the Ottoman holdings. The Eastern Question emerged as the power of the Ottoman Empire began to decline during the 18th century. The Ottomans were at the height of their power in 1683, when they lost the Battle of Vienna to the combined forces of the Polish–Lithuanian Commonwealth and Austria, under the command of John III Sobieski. Peace was made much later, in 1699, with the Treaty of Karlowitz, which forced the Ottoman Empire to cede many of its

Context: Document [3](Title: Ottoman wars in Asia) the main problem was the rebel in Yemen which was subdued. Ottoman Empire fought against the Allies in the First World War and was defeated. According to Armistice of Mudros Ottoman Empire accepted the loss of all territories in the Arabian Peninsula, Syria, Palestine, Jordan, Lebanon and most of Iraq. Although Turkey and North Iraq were still under Ottoman rule, soon Allies occupied the Mediterranean coast and North Iraq. They also offered Aegean coast (as well as Thrace) to Greece and eastern Anatolia to newly establiahed Armenia by the Treaty of Sèvres. However the treaty became ineffective during the Turkish

Context: Document [4](Title: History of the Ottoman Empire during World War I) Enver informed the Quadruple Alliance that they would like to see the 1877 border (Russo-Turkish War (1877–1878)), pointing out that the only Ottomans lost territory and 1877 border was Ottoman territories inhabited by Muslims. Ottomans did not pushed 1877 position too hard, scared to fall back to bilateral agreements. On the other hand, Germany, Austria-Hungary, and Bulgaria clearly stood behind on the pulling back the Ottoman and Russian forces from Iran. Ottomans wanted Muslim Iran be under its own control. The ambassador to Berlin, Ibrahim Hakki Pasha, wrote: "Although Russia may be in a weakened state today, it is always

Context: Document [5](Title: Middle Eastern theatre of World War I) was never ratified by the Ottoman Empire. The Treaty of Sèvres was annulled in the course of the Turkish War of Independence, and the parties signed and ratified the superseding Treaty of Lausanne in 1923. On 3 March 1924, the Ottoman Caliphate was abolished when Mustafa Kemal Ataturk deposed the last caliph, Abdul Mejid II. Allied military losses are placed between 1,000,000 and 1,500,000 including killed, wounded, captured or missing. This includes 303,000 British Empire and French casualties in Gallipoli, 601,000 British Empire casualties in Sinai-Palestine, at least 140,000 Russian casualties in the Caucasus, and 256,000 British Empire casualties in

Context: Document [6](Title: Dissolution of the Ottoman Empire) caused by the Ottoman counter-coup of 1909, which preceded the 31 March Incident (Restoration, 1909) and 1912 Ottoman coup d'état ("Saviours") and the 1913 Ottoman coup d'état in the Empire up to World War I. The Ottoman entry into World War I in the Middle Eastern theatre ended with the partition of the Ottoman Empire under the terms of the Treaty of Sèvres. This treaty, as designed in the conference of London, gave a nominal land and permitted the title Ottoman Caliphate (compared with Vatican; a sacerdotal-monarchical state ruled by the Catholic Pope), not to be a further threat but

Context: Document [7](Title: Pax Ottomana) with the period after World War I, when only Asia Minor and Eastern Thrace remained under Turkish rule. The term is derived by analogy from the more common "Pax Romana", "the Roman Peace". Pax Ottomana In historiography, the Pax Ottomana (literally "the Ottoman Peace") or Pax Ottomanica is the economic and social stability attained in the conquered provinces of the Ottoman Empire, which, at the height of the Empire's power during the 16th and 17th centuries, applied to lands in the Balkans, Anatolia, the Middle East, North Africa and the Caucasus. The term is preferred in particular by historians and

Context: Document [8](Title: Ottoman casualties of World War I) by Ottoman and Kurdish armies in 1914 and 1920. Sources have put the death tolls at nearly 750,000. After the partitioning of the Ottoman Empire, for reliability reasons, the data regarding the Muslim casualties had to be collected by region. The records regarding the Muslim civilians were sealed at the time of the Paris Peace Conference, and there is very little literature review on the Muslim millet, compared to Christian millet of the Empire (see: Armenian casualties). One plausible explanation that needs further study may be attributable to productivity patterns of the Muslim millet, which could have dropped beyond sustainable

Context: Document [9](Title: Diplomatic history of World War I) wars, most recently in 1912. The economy was heavily traditional, but with a strong German influence in terms of modernization, especially building railways. In 1914 the Ottoman government in Constantinople took the initiative in supporting the Central Powers. see Ottoman–German alliance Its Army already was under German guidance, especially by General Otto Liman von Sanders. The British expected the alliance with Germany and seized two dreadnoughts under construction that had been paid for by the Ottomans. Negotiations with the Allies went nowhere after the Turks demanded very large concessions. Instead, a secret alliance was made with Germany in early August,

Context: Document [10](Title: Turkish War of Independence) Eastern theatre of World War I to a close. The treaty granted the Allies the right to occupy forts controlling the Straits of the Dardanelles and the Bosporus; and the right to occupy "in case of disorder" any territory in case of a threat to security. Somerset Arthur Gough-Calthorpe—the British signatory of the Mudros Armistice—stated the Triple Entente′s public position that they had no intention to dismantle the government of the Ottoman Empire or place it under military occupation by "occupying Constantinople". However, dismantling the Ottoman government and partitioning the Ottoman Empire among the Allied nations had been an objective

Context: Document [11](Title: Dissolution of the Ottoman Empire) was based on the arrangements nominally made in the Treaty of Berlin (1878) and the Treaty of San Stefano. According to this arrangement the inspectors general, whose powers and duties constituted the key to the question, were to be named for a period of ten years, and their engagement was not to be revocable during that period. The History of the Ottoman Empire during World War I began with the Ottoman's attack on Russia's Black Sea coast on 29 October 1914. The attack prompted Russia and its allies, Britain and France, to declare war on the Ottoman Empire in November

Context: Document [12](Title: Black Sea Raid) quickly retaliated with naval attacks in the Dardanelles, and the Russians declared war on 2 November, followed by the British and the French three days later. The Ottomans did not officially declare war until 11 November. The Ottomans desperately tried to secure an alliance with a great power before the outbreak of World War I in 1914, but almost all of their attempts ended in failure. Even when the Germanophile Ottoman War Minister Enver Pasha directly proposed an alliance on 22 July to the German ambassador in Istanbul, Hans Freiherr von Wangenheim, he was turned down. Kaiser Wilhelm II overruled

Context: Document [13](Title: History of the Ottoman Empire during World War I) bay without spreading to Ottomans in a violent. On 3 December the Ottoman foreign minister Ahmed Nesimi Bey informed the "Chamber of Deputies" about the prospects. Chamber discussed the possible outcomes and priorities. On 15 December Armistice between Russia and the Central Powers signed. On 18 December Armistice of Erzincan signed. The Bolsheviks’ anti-imperialist formula of peace with no annexations and no indemnities was close to Ottoman position. The Bolsheviks' position brought a conflict with the Germany's aim to preserve control over the East European lands it occupied and with Bulgaria’s claims on Dobruja and parts of Serbia. In December

Context: Document [14](Title: Dissolution of the Ottoman Empire) cast covetous eyes on this new and largely Islamic state. The young state, however, collapsed within weeks of the outbreak of World War I. At the turn of 1913, the Ottoman Modern Army failed at counterinsurgencies in the periphery of the empire, Libya was lost to Italy, and Balkan war erupted in the fall of 1912. LU flexed its muscles with the forced dissolution of the parliament in 1912. The signs of humiliation of the Balkan wars worked to the advantage of the CUP The cumulative defeats of 1912 enabled the CUP to seize control of the government. The Liberal

Context: Document [15](Title: History of the Ottoman Empire during World War I) on 18 March 1915 was a set of secret assurances, which Great Britain promised to give the Capital and the Dardanelles to the Russians in the event of victory. The city of Constantinople was intended to be a free port. During 1915, British forces invalidated the Anglo-Ottoman Convention, declaring Kuwait to be an "independent sheikdom under British protectorate." On 10 September 1915, Interior Minister Talat Pasha abolished the "Capitulations". On 10 September 1915 Grand Vizier Said Halim Pasha annulled (Vizer had the authority on annuls) the Capitulations, which ended the special privileges they granted to foreign nationals. The capitulation holders

Context: Document [16](Title: Assyrian independence movement) Austro-Hungarian Empire and Bulgaria) and join them in dividing up the British, Russian and French empires in Asia. In 1914, knowing that it was heading into the war, the Ottoman government passed a law that required the conscription of all young males into the Ottoman army to support the war effort. The Ottoman Empire entered World War I in October 1914 by bombarding Russian ports on the Black Sea. In late 1914 and 1915, the Ottoman Empire under the Young Turk regime declared a holy war on the British, French and Russian Empires. Ottoman Turkish army and allied Kurdish, Turcoman,

Context: Document [17](Title: Middle Eastern theatre of World War I) 18 January 1919, peace negotiations began with the Paris Peace Conference. The negotiations continued at the Conference of London, but the treaty took definite shape only after the premiers' meeting at the San Remo conference in April 1920. France, Italy, and Great Britain had been secretly planning the partitioning of the Ottoman Empire as early as 1915. The Ottoman Government representatives signed the Treaty of Sèvres on 10 August 1920, but the treaty was not sent to the Ottoman Parliament for ratification, as the Parliament had been abolished on 18 March 1920 by the British. As a result, the treaty

Context: Document [18](Title: History of the Ottoman Empire) the Ottoman Empire lost Libya, the Balkan League declared war against the Ottoman Empire. The Empire lost the Balkan Wars (1912–13). It lost its Balkan territories except East Thrace and the historic Ottoman capital city of Adrianople during the war. Some 400,000 Muslims, out of fear of Greek, Serbian or Bulgarian atrocities, left with the retreating Ottoman army. The Baghdad Railway under German control was a proposal to build rail lines into Iraq. The railway was not actually built at this time but its prospect worried the British until that issue was resolved in 1914. The railway did not play

Context: Document [19](Title: Ottoman wars in Europe) by the signing of the Treaty of Sèvres at the close of World War I. After striking a blow to the weakened Byzantine Empire in 1356 (or in 1358 - disputable due to a change in the Byzantine calendar), (see Süleyman Pasha) which provided it with Gallipoli as a basis for operations in Europe, the Ottoman Empire started its westward expansion into the European continent in the middle of the 14th century. Constantinople fell in 1453 after the Battle of Varna (1444) and the Second Battle of Kosovo (1448). The remaining Greek states fell in 1461 (Despotate of the Morea

Context: Document [20](Title: Yalova Peninsula massacres) the atrocities. Michael Smith claims that Circassian irregulars also took part in the massacres. One of the results was that refugees were transported to Constantinople on ships. After World War I, the Ottoman Empire officially surrendered to the Entente Powers and it had to disband its army. At the peace conference the British and French tried to secure territory for the Kingdom of Greece in Smyrna and its surrounding regions. As a result, the Greek army, with the support of the Entente Powers, invaded Anatolia and occupied Smyrna. The Ottoman government and Turkish nationalists, which included people from all layers

Question: when did the ottoman empire surrender in ww1?

Answer: 1918

Answer: 30 October 1918