From: burke@seachg.com (Michael Burke)
Newsgroups: comp.newprod
Subject: SCSI Navigator - Mission Critical SCSI Utility
Date: 25 Aug 92 15:55:12 GMT
Followup-To: poster
Organization: Sea Change Corporation, Mississauga, Ontario, Canada

SEA CHANGE CORPORATION
6695 Millcreek Drive, Unit 8
Mississauga, Ontario, Canada  L5N 5R8
Tel:  416-542-9484    Fax:  416-542-9479
Contact: Michael Burke


		SEA CHANGE ANNOUNCES SCSI NAVIGATOR SOFTWARE
	Offers Mission Critical Backup/Restore for SCO Unix 3.2.4 Users

    MISSISSAUGA, ONTARIO, 15 July 1992 -- Sea Change Corporation today
an- nounced SCSI NAVIGATOR, a software utility for SCO Unix based
computers.  SCSI NAVIGATOR is a suite of integrated functions designed
to simplify installation and day-to-day operation of SCSI storage
devices.

    "SCSI will be the dominant high-performance I/O interface of the
90's," said Sea Change President John Alsop, "but at the same time as
SCSI offers new levels of capacity and performance, it also introduces
a new set of technical problems and pitfalls."

    "UNIX systems are now being implemented for strategic business
applications where extended system downtime cannot be tolerated.  A
critical problem for this type of application is how to deal with
failure of a system disk or loss of a file system.  It is no longer
acceptable to spend an entire day reinstall- ing and re-configuring
the operating system.  SCSI NAVIGATOR eliminates this concern with its
unique MISSION CRITICAL backup/restore function.  This feature lets
users restore an entire UNIX system in less than 10 minutes."

    SCSI NAVIGATOR consists of two sets of programs.  The On-line
Utilities software, which runs as a privileged application under SCO
Unix, replaces several command line oriented programs.  Functions are
provided for disk format- ting, device testing, partitioning,
performance profiling, and data backup/re- store.  Full support is
provided for partitioning disk drives for both DOS and UNIX operation.

    The Off-line Utilities run directly on the system hardware, with
no host operating system required.  This unique capability is provided
by Sea Change's advanced software which talks directly to the system's
Adaptec SCSI controller, and allows system backup tapes to be accessed
even if the main system disk has failed.

    Both programs use the same simple user interface featuring
full-color point-and-shoot menus, and context-sensitive help.

    SCSI NAVIGATOR supports any SCSI disk or tape drive conforming to
SCSI-1 or SCSI-2 standards.

    SCSI NAVIGATOR is available immediately from Sea Change in both
single and multiple-system licenses.  The software can also be
purchased bundled with Sea Change's high-performance SCSI storage
systems, offering disk capacities from 480 MB through 2.4 GB, and tape
capacities from 525 MB through 5 GB.  These kits may be installed
internally within a system cabinet (where space allows), or as
external sub-systems.

    Sea Change Corporation, located in Mississauga, Ontario, Canada,
is a lead- ing developer of SCSI based storage products for several
system platforms.  The company's products are available directly, and
through an extensive reseller network.

				- 30 -

For further information, contact Sea Change at the address given above, or
send e-mail to:  burke@seachg.com.



			SCSI NAVIGATOR
		         for SCO Unix 

		       Product Overview


Background
----------

    SCSI will be the dominant high-performance I/O interface for the
1990's due to its combination of performance, flexibility and moderate
cost.  Vendors of UNIX based workstations and servers will begin to
integrate SCSI interfaces directly on main system CPU boards, as well
as providing adapter boards.

    While SCSI offers new levels of peripheral capacity and
performance, it also introduces a new set of technical challenges and
problems.

    SCSI is a major player in the "Open Systems" movement. While this
can offer wider choices in the selection of peripherals, based on
price, capacity and performance, it leaves a vaccum with regards to
support issues. The system vendor may not fully support the nuances
associated with the device while the device supplier may not have
expertise in the system to which the device is attached. SCSI
NAVIGATOR will provide a key role in this type of situation, by
providing the link between the two suppliers.

    One critical area of concern relates to system availability.  In
the past, failure of a system disk or loss of a file system could
result in the need to re-install and re-configure the operating
system. This is a labor-intensive exercise requiring highly skilled
technical personnel, and typically could require an entire day or
longer. As UNIX systems are rolled-out for strategic business
applications, such extended system downtime cannot be tolerated.

SCSI NAVIGATOR
--------------

   SCSI NAVIGATOR is a software product designed to provide a complete
set of tools for dealing with installation and day-to-day operation of
SCSI storage devices.  It is based on Sea Change's extensive SCSI
knowledge and experience gained during 5 years of offering SCSI
storage products and software for the NCR TOWER product line.

    SCSI NAVIGATOR consists of two sets of programs.  The On-line
Utilities run as a privileged application under SCO UNIX, replacing
several command line oriented programs.  Functions are provided for
disk formatting, device testing, partitioning, performance profiling,
and data backup/restore.  Full support is provided for partitioning
disk drives for both DOS and UNIX operation.

    The Off-line Utilities run directly on the system hardware, with
no host operating system required.  This unique capability is provided
by Sea Change's advanced software which talks directly to the system's
SCSI control- ler, and allows system backup tapes to be accessed even
if the main system disk has failed.

    Both programs use the same simple user interface featuring
full-color point-and-shoot menus, and context-sensitive help.

    SCSI NAVIGATOR for SCO Unix supports the Adaptec family of SCSI
Control- lers and the integrated SCSI processors found in the NCR 3000
Series systems.

    SCSI NAVIGATOR includes a unique MISSION CRITICAL backup/restore
function.  With this feature, users may perform a partial or full
system image backup using the On-line utilities. If a system disk
failure occurs, the entire UNIX system can be restored in as little as
10 minutes, using the Off-line utilities.

    SCSI NAVIGATOR supports any SCSI disk drive conforming to SCSI-1
or SCSI-2 standards, and all high-capacity tape devices including
QIC-150, QIC-525, 4mm DAT drives, 8mm helical scan drives, and
traditional 9-track tape drives.

    SCSI NAVIGATOR is available from Sea Change in both single and
multiple- system licenses.  The software can also be purchased bundled
with Sea Change's high-performance SCSI storage systems, offering disk
capacities from 480 MB through 2.4 GB, and tape capacities from 525 MB
through 5 GB.  These kits may be installed internally within a system
cabinet (where space permits), or as external subsystems.

    Sea Change Corporation, located in Mississauga, Ontario, Canada,
is a leading developer of SCSI oriented storage products.  The
company's products are available directly, and through an extensive
reseller network.

				---

For further information, contact Sea Change at the address given above, or send
e-mail to:  burke@seachg.com.

			   ESD - External SCSI Disk 
		       Subsystems For SCO Unix Systems

Complete "plug and play" SCSI Disk Subsystem kits from Sea Change
Corporation provide the latest in SCSI technology in a single package
solution for Intel based computer systems.

Ranging in capacity from 480 MB to over 2 GB the ESD kits allow your
system to support a wide range of application solutions with a high
level of system performance.  Each kit includes a copy of SCSI
Navigator, a software utility designed to maximize the day-to-day
operation of your system, a high perform- ance SCSI disk with cables
in an external cabinet, and optionally - an Adaptec SCSI controller.

Each ESD storage kit is shipped with all of the necessary hardware for
easy installation and operation.  Field upgrades are simple and fast,
regardless of your current configuration with our single and triple
SCSI device cabinets.

With over five years of providing SCSI products for NCR systems, Sea
Change has a proven track record. Offering outstanding product quality
is only part of the story. Sea Change augments this with industry
leading customer support, directly, and through a network of
resellers.

In addition to these ESD kits, several SCSI tape storage kits (525 MB
Stream ing, 2.5 GB Exabyte, 5.0 GB Exabyte and 1.3 GB DAT) and
mainframe level high performance SCSI disk kits are also available as
"plug and play" products from Sea Change.  Call for details.

All ESD drives are pre-tested and pre-formatted by Sea Change prior to
shipment.

Features
  Pre-formatted disk drive
  Uses standard SCO Unix Device Drivers
  High storage capacity
  High performance
  Optimized specifically for the SCO implementation of Unix
  Complete Plug and Play kit, includes mounting hardware/documentation
  Includes SCSI Navigator
   - On-line support utilities
   - Off-line support utilities
   - MISSION CRITICAL backup and restore utilities

Technical Specifications

			      ESD480    ESD766    ESD1200   ESD1600   ESD2100

Unformatted (MB)                492       766       1200      1650      2200
Formatted (MB)                  426       663       1037      1451      1900
Avg Access Time (MS)             14        15         15        15      12.9
Avg Latency (MS)                6.8       8.3        8.3       8.3       8.3
Data Transfer-Internal(c)     17-25        15      15-23     17-32     20-31
Data Transfer-External(d)         5         4          5         5        10 
Number of Platters                5         8          8         8         8
Number of Disk Surfaces           9        15         15        15        15
Trades per Surface            1,476     1,632      1,931     2,107     2,574
Onboard Cache Memory          64K(b)    32K(a)    256K(b)   256K(b)   256K(b)
Form Size                     3.5 "     5.25"      5.25"     5.25"     5.25"
MTBF (000's of hours)           150       150        150       150       150
SCSI Interface               SCSI-2      SCSI     SCSI-2    SCSI-2     Fast
                                                                      SCSI-2

(a) Look ahead cache        (c) Mbits/sec
(b) Segmented cache         (d) MBytes/sec (Synch)   

Notes:  SCO is a trademark of Santa Cruz Operation, Inc.
	Unix is a registered trademark of Unix Systems Laboratories
	SCSI NAVIGATOR is a trademark of Sea Change Corporation
-- 
Michael Burke, Sea Change Corporation
6695 Millcreek Drive, Unit 8, Mississauga, Ontario, Canada L5N 5R8
Tel: 416-542-9484  Fax: 416-542-9479, UUCP: ...!uunet!uunet.ca!seachg!burke