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TZ88 Digital Linear Tape Drive

HIGHLIGHTS

o  Unprecedented capacity of up to 40 GB per cartridge

o  Read/write compatibility with Tx85, Tx86, and Tx87 formats, allowing for
   application flexibility and investment protection

o  First products in a new family of TZ88-based subsystems

PRODUCT DESCRIPTION

The TZ88 digital linear tape (DLT) drive extends the DLT family to new
levels of capacity, with up to 40 GB of capacity per cartridge -- two
times the capacity of the TZ87 drive. With this new level of capacity,
high-end workstations, as well as network servers and systems, now have
enhanced unattended backup/restore and archival capabilities. When
combined with the high reliability and industry-leading data integrity of
DLT capabilities, the TZ88 is a true heavy-duty tape drive for
Hierarchical Storage Management (HSM), image/multimedia storage,
archiving, near-online storage, and unattended backup applications.

The TZ88 tape drive provides read/write support for the existing
CompacTape III (10 GB native/20 GB compressed) product, as well as the
new CompacTape IIIXT (15 GB/20 GB compressed), and CompacTapeIV (20 GB
native/40 GB compressed) media. The TZ88 provides full data interchange
capabilities to the Tx85, Tx86, and Tx87 subsystems. The TZ88 is not read
compatible with older tape formats, such as the TZ30, TK50, and TK70
products.

A family of loader products based on the TZ88 will be announced in early
1996.

BENEFITS

o  Unattended capacity -- With up to 40 GB of capacity, the TZ88 sets a new
   price/capacity point for unattended backup for virtually all high-end
   workstations, as well as many servers and systems.

o  High backup performance -- Supports a transfer rate of up to 2.5 MB per
   second and over 9 GB per hour. This rate meets or exceeds the
   requirements of most systems and server installations (actual performance
   varies with system load, applications software, configuration, and other
   system level factors).

o  Restore performance -- Fast search capability ensures quick data access
   for both emergency restore situations, as well as applications such as
   HSM and archiving.

o  Drive reliability -- Advanced linear tape path design maintains a low
   constant tension between the tape and read/write head, minimizing head
   wear and extending the drive's useful life when compared to other
   alternatives.

o  Subsystem reliability -- Digital's extensive device qualification and
   system integration testing ensure that the TZ88 saves and restores
   critical data without compromising data integrity.

o  Investment protection -- Compatibility with Tx85, Tx86, and Tx87 products
   ensures that previously written data can continue to be accessed.

AVAILABILITY AND ORDERING

The TZ88 drive can be ordered now from Digital and its business partners.

CompacTape IIIXT and CompacTapeIV media are increasingly available from a
variety of distributors and resellers. Users in the U.S. can purchase
this media from Digital by calling the StorageWorks FAX Back system at
1-800-STORWORK to get ordering and availability information.

Order No.    Description

TZ88N-VA     20/40 GB SCSI-2 Tape Drive in StorageWorks System Building
             Block. Includes CompacTape IV Data Cartridge, Cleaning
             Cartridge, Power Cable, and Manuals
TZ88N-TA     20/40 GB SCSI-2 Tabletop Tape Drive. Includes CompacTapeIV
             Data Cartridge, Cleaning Cartridge, Power Cable, and Manuals

             Accessories:

TK85K-01     1 TK85 10 GB Tape Cartridge
TK85K-07     7 TK85 10 GB Tape Cartridges
TK85K-A1     945 TK85 10 GB Tape Cartridges
TK85-HC      1 DLT Head Cleaning Kit
TK85K-LA     1,000 CompacTape Labels Cables
BC19J-03     3 Foot/.9 Meter for DEC 3000 Systems
BC19J-06     6 Foot/1.8 Meter for DEC 3000 Systems
BC06P-06     6 Foot/1.8 Meter for DEC 4000 Systems
BC06P-09     9 Foot/2.7 Metes for DEC 4000 Systems
BN23G-02     6 Foot/1.8 Meter DEC 7000 and DEC 10000 Systems

SERVICES

Users who want to purchase a TZ88 but have a large library of TK50, TZ30,
or TK70 tapes should consider ordering Digital's Media Replication
Services, which can perform the TK conversion work with little
interruption in operations.

TECHNICAL DATA

o  Specifications

   - Form factor of 5.25-inch full-height device
   - Up to 20 GB native/40 GB compressed (assuming 2-to-1 compression ratio)
   - Transfer rate of 1.5 MB-per-second native/2.5 MB per second compressed
   - Less than 1 undetected (soft) error in 1 x 1017 bits read

o  System support

   - DEC 3000, DEC 4000, DEC 7000, DEC 10000, and AlphaServer 8200 and 8400
     systems running the OpenVMS Alpha V6.1 operating system
   - MicroVAX 3100 Model 30, 80, 90, and 100; VAX 4000 Model 200 and 600;
     VAX 6000; and VAX 7000 systems running the OpenVMS VAX V6.2 operating
     system
   - DEC 3000, DEC 4000, DEC 7000, DEC 10000, and AlphaServer 8200 and 8400
     systems running the Digital UNIX V3.2 operating system
   - Additional system support and support for the Windows NT operating
     system are planned

o  Controller support

   - HSJxx controller initially supports the TZ88 family of tape drives with
     limitations. Full support is planned in a future HS Operating Firmware
     release
   - HSD10 supports the TZ88
   - HSCxx supports the TZ88 utilizing the K.SCSI controller card; however,
     performance will be closer to that of a TZ87 drive due to the
     controller design
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