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TL820 5.2 Tbyte Digital Linear Tape Library

HIGHLIGHTS

o  Based on industry leadership DLT technology, new library provides high
   capacity and performance in small footprint

o  Significantly lowers entry price for large scale unattended backup and
   archiving

PRODUCT DESCRIPTION

The TL820 digital linear tape (DLT) library is the newest member of
Digital's family of near-online automated storage products, providing up to
5.2 Tbytes of storage for unattended backup operations, archiving, large
scale data storage, and video-on-demand applications. The TL820 DLT library
uses three high performance TZ87 tape drives for unsurpassed data integrity
and high capacity (up to 20 Gbytes compressed per cartridge).

The TL820 DLT library can be a significant component in a user's overall
plan to provide unattended access to ever-increasing amounts of data while
holding down costs and thus improve productivity substantially. Its key
features supporting this position are as follows:

o  High capacity -- The basic TL820 stores the equivalent of 35,000 9-track
   tapes, or an 80 million page filing cabinet, ensuring that all of an
   organization's data can be online for timely retrieval.

o  Flexibility -- Up to five towers can be connected together into a
   seamless, virtual library through the use of an innovative pass-through
   mechanism, providing up to 26 Tbytes of data storage for true
   enterprise-wide data storage.

o  Compactness -- The TL820 has a footprint of slightly over nine square
   feet (less than one square meter). This is considerably less than that of
   competing products and non-automated alternatives.

o  High performance -- Based on the TZ87 drives, the TL820 provides a
   throughput of up to 2.5 Mbytes per second per drive, or 7.5 Mbytes per
   second per library, ensuring that both data storage and retrieval are
   accomplished quickly.

o  Leadership data integrity and reliability -- The TZ87 drives used by the
   TL820 provide the highest data integrity and reliability of any tape
   drives available today, assuring a high degree of availability and
   uninterrupted operation.

o  Low cost -- The TL820 represents a new price point for high performance,
   multiterabyte libraries, making it easier than ever to implement
   unattended storage operations.

Users often compare optical jukeboxes with tape libraries. Digital believes
that the random access capabilities of optical drives make them best suited
for applications requiring access to relatively small objects, such as some
hierarchical storage applications, permanent archives, and document imaging.
Tape libraries are best suited for the storage and retrieval of large
objects, especially when the object's data organization is sequential, such
as a backup data set or seismic or telemetry data.

AVAILABILITY AND ORDERING

The TL820 DLT library is available now from Digital and its business
partners for DEC OSF/1 AXP, OpenVMS VAX, and OpenVMS AXP systems.

Order No.        Description

		 TL820 DLT Library Products:
2T-TL820-BA	 DLT library with three TZ87 DLT drives, inport/outport
                 device, DECLS software, and service (this order number for
                 U.S. only)
TL820-BA	 DLT library with three TZ87 DLT drives and inport/outport
                 device
TL820-AC	 DLT library expansion cabinet with three TZ87 DLT drives
                 and attachment kit
TL82X-BA	 Cartridge bin pack for TL820; holds 11 cartridges
TL82X-MT	 Media kit: TK85K cartridge (273 cartridges)

SERVICES

Digital's Standard price includes a one-year onsite hardware warranty with a
priority response, typically the next business day. The onsite hardware
support is available Monday through Friday, 8:00 am to 5:00 pm, excluding
Digital holidays. Users can purchase upgrades and extensions to suit their
needs.

TECHNICAL DATA

Configuration

The first unit that users order must be the TL820-BA or the 2T-TL820-BA.
(The 2T-TL820-BA is for U.S. users, but an equivalent package is available
for European users, with installation, on a quotation basis; local Digital
sales offices can provide more information on obtaining this package.) The
TL820-AC is an add-on unit for expandability and requires a base library
unit.

System Support

The TL820 library is being initially supported on DEC 3000, 4000, 7000, and
10000 systems under OpenVMS AXP V1.5 and on VAX 6000, 8000, 9000, 11/750,
and 11/780 systems under OpenVMS V5.5-2 or later. Support under DEC OSF/1
V2.0 is also being provided when the library is used with POLYCENTER
NetWorker Save and Restore software (SPDs 50.99, 51.01, 51.02, and 51.03).

Application Software

Use of the TL820 DLT library requires robotics and media management
software. Users have a growing number of Digital and third-party options for
the integration of the TL820:

o  Users who purchase 2T-TL820-BA receive DECLS software and service. DECLS
   provides software connectivity under the OpenVMS VAX operating system to
   SLS, Tapesys from Software Partners, and UIS Archive from Raxco. DECLS
   also provides support for the TL820 under the OpenVMS AXP operating
   system.

o  Users running the DEC OSF/1 operating system can utilize POLYCENTER
   NetWorker Save and Restore V2.2B for support.

o  Branches from Acorn Software also supports the TL820 under the OpenVMS
   VAX and OpenVMS AXP operating systems.

TL820 Library Unit Specification Highlights

o  Size: 78.7 inches/200 cm high, 36 inches/72 cm wide, 47 inches/120 cm
   deep.
o  Weight: 784 lb (356 kg) with drives, unloaded.
o  Power: 90 to 135 V and 176 to 264 V, autoranging, at 47 to 63 Hz.
o  MSBF: 500,000 cartridge exchange cycles.

Tape Drive Specification Highlights

o  Transfer rate: up to 1.25 Mbytes per second native, up to 2.5 Mbytes per
   second compressed.
o  Maximum capacity: 20 Gbytes.
o  Durability: 500,000 tape-head passes.

NOTE: These performance statistics reflect only the drive capabilities;
      actual drive performance is a function of the system configuration and
      its application.

__________
Branches is a trademark of Acorn Software.
Tapesys is a trademark of Software Partners.
UIS Archive is a trademark of Raxco.
StorageTek is a registered trademark of Storage Technology Corporation.
OSF/1 is a registered trademark of the Open Software Foundation, Inc.