ADIC Doubles Tape Library Capacity and Throughput with Support for LTO-3; Provides Broad Library Platform Range to Help Users Manage Growing Data.

REDMOND, Wash. -- Advanced Digital Information Corporation (Nasdaq:ADIC), the leader in Intelligent Storage(TM) solutions for the open systems market, today announced broad support for the third-generation Linear Tape-Open(TM) (LTO(R)) Ultrium tape drive, offering users dramatically enhanced capacity and data transfer rates for its LTO family of tape libraries. With LTO-3 technology, ADIC tape libraries now offer single-library capacities of up to 10 petabytes (a) and maximum combined data transfer rates of up to 50 TB per hour (a).

The ADIC family of LTO-3 libraries provides the broadest solution range in the industry. It includes a full line of intelligent tape automation systems that extends from compact workgroup libraries to scalable solutions for consolidating enterprise backup and multi-robotic platforms for very large-scale archiving applications.

"LTO-3 means that better library management tools are even more critical," said Bill Britts, ADIC executive vice-president of sales and marketing. "Larger and faster libraries mean that IT departments can consolidate protection for more servers and applications. But unless users also have easy access to better management tools it can actually make backup harder to control. ADIC's libraries are the perfect platforms for LTO-3 because they integrate directly into the library the industry's most advanced management features, including proactive path verification, managed SAN connectivity, capacity-on-demand growth, and automated diagnostics that actually reduce the need for service calls by 50% over conventional libraries.

"Offering LTO-3 libraries is important for our customers because it means that their backup systems will be able to keep up with the growth of data and will continue to drive down costs. These are both important issues as users work to provide dependable and secure data protection for short-term file retrieval, system-wide disaster recovery, and long-term data retention in support of regulatory requirements."

LTO-3 technology will be available in ADIC's Scalar 24, Scalar 100, Scalar i2000, and Scalar 10K tape libraries and FastStor 2 autoloader, with shipments beginning in April 2005. LTO-3 drives offer double the capacity (up to 800GB (a) per cartridge) and more than twice the data transfer rate (up to 160MB (a) / second throughput) of LTO-2 tape drives, and they provide backward capability with prior-generation Ultrium media.

About ADIC

Advanced Digital Information Corporation (Nasdaq:ADIC) is a leading provider of Intelligent Storage(TM) solutions to the open systems marketplace. ADIC is the world's largest supplier of automated tape systems using the drive technologies most often employed for backing up open system, client-server networks. (b) The Company's data management software, storage networking appliances, and disk-based backup and restore solutions provide IT managers innovative tools for storing, managing and protecting their most valuable digital assets in a variety of disk and tape environments. ADIC storage products are available through a worldwide sales force and a global network of resellers and OEMs, including Cray, Dell, EMC, Fujitsu-Siemens, HP, IBM and Sun. Further information about ADIC is available at www.adic.com.

(a) Capacity and Data Transfer Rate assume 2:1 compression.

(b) Market Share: Gartner Dataquest, Tape Automation Systems Market Shares, 2003, F. Yale, April 2004. ADIC, Scalar, and FastStor are registered trademarks, and Intelligent Storage is a trademark of Advanced Digital Information Corporation. All other trade or service marks mentioned in this document should be considered the property of their respective owners.