From: burke@seachg.uucp (Michael Burke)
Subject: SCSI Navigator - Mission Critical SCSI Utility
Reply-To: burke@seachg.UUCP (Michael Burke)
Organization: Sea Change Corporation, Mississauga, Ontario, Canada
Date: Fri, 21 Aug 92 21:14:42 GMT


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


		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
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