### shape:

Disk
* Most disks have only one spindle.
* Some disks contain gases
  - have a central cavity, meaning that they are really ring-shaped
* also allow information to be transferred between different computers.
* are a hallmark of young stars and are believed to be regions of planet formation
  - and are thought to be regions of planet formation
  - analogous to modern diamonds, and represent earth and business
  - biodegradable and non-toxic
  - cheap to mass produce and also drives
  - circular objects
  - circulars
  - cold , so tides produce narrow ribbon-like features
  - cylinders
  - flats
  - fragile and are carefully packed in rigid shipping materials
  - generally more likely to fail either very early or very late in their lifetimes
* are located in cd players
  - computer stores
  - disk drives
  - hard drives
  - much slower than memory, but they tend to have a very large storage capacity
  - plates
  - quite sensitive to dust
  - round shapes
  - rounds
  - sensitive to heat and cold and warping which can occur inside a van
  - softer than bone and act as cushions between the vertebrae, giving the back flexibility
  - the computer's storage medium
* are used for data storage
  - storing information
  - throws
  - usually the highest level of the storage pyramid that is non-volatile
* avoid the domain between the high and low surface brightness zones.
* can be ruptured, ligaments can sprain, and muscles can be strained
  - contain folders, documents or applications
* come in several different sizes, storage capacities and types
  - various sizes and densities
* provide long-term, inexpensive method of storing information.
* radiates away energy and cools off.
* spin , so the response depends on the inclination.
* use magnetic media to store programs and documents.
+ RAID, Basics: simple RAID levels, RAID levels in common use, RAID 5 "striping with distributed parity": Storage devices
  * This checksum is a special case of a Reed-Solomon code that only uses bitwise addition. Usually, it is  calculated using the XOR method. Since this method is symmetric, one lost data block can be rebuilt from the other data block and the checksum. For each block, a different disk will hold the parity block which holds the checksum. This is done to increase redundancy. Any disk can fail. Overall, there will be one disk holding the checksums, so the total usable capacity will be that of all disks except for one. The size of the resulting logical disk will be the size of all disks together, except for one disk which holds parity information.

### shape | disk:

Dot
* Every dot gets the color of the atom it is situated closest to.
* Many Dots Create pictures and patterns by changing the colors of dots, beads, and triangles
* are color-coded according to earthquake depth
  - data samples from the surfaces of humerus, ulna and radius
  - intraepithelial microcysts that contain nuclear, cytoplasmic, and lipid debris
  - locations of buried radiocarbon-dated soils, peat and forests
  - short pulses of electrical current compared to the longer dash pulses
* are small sized and sharply defined, and are fixed as to size and number
  - web applets that make finding stuff on the web easy
  - the unit used to measure the resolution of the printed image
  - visible to the naked eye
* become lines, blurring and overlapping in spatially complex compositions.
* can represent a color.
* depict a spiral of favorable van der Waals contacts made to surrounding atoms.
* game that has simple rules, but like many others, strategy can take some time to learn
  - with a grid of dots placed on the board
* indicate presence.
* is spots up close
  - the tiny speck among infinity, but is all things within
* mean locations of sensors.
* often represent cities and segments the roads between cities.
* represent derivatives with respect to time.
* stand for a decimal point.
* strategy game.