Tokyo Electron Limited announced today that it has decided to begin offering Pathlight VX virtual tape library product from Advanced Digital Information Corp. (ADIC; Head Office: Redmond, California, U.S.A.; Chairman & CEO: Peter H. van Oppen). This product is the industry's cutting-edge integrated disk-to-tape backup solution, having the combination of both advantages of disk and tape systems.

As businesses and organizations deal with greater amount of information, there is increasing interest in the concept of very fast bakcup and restore of the valuable and huge amount of data with simple management. TEL examined products to meet such business needs and made the decision to add the product to its solutions lineup, which has led the SAN industry up to now, after taking into account the proven performance and technical ability of ADIC, the world's largest supplier of automated tape systems, and ADIC's leading-edge "Pathlight VX" that combines the advantages of disk and tape drives.

Pathlight VX provides disk-based backup and restoration capabilities, where performance and reliability are necessary, simultaneously transferring data to tape drives and enabling long-term data management security. By centralizing management of its diverse back-up solutions, it contributes significantly to increase efficiency and decrease costs for data management overall, especially in high-end markets with tremendous volumes of data and a need for mission-critical systems.

Main Advantages of Pathlight VX
• Virtual tape library product that selects disks as though they were tape libraries
• High performance of disk-based storage dramatically reduces backup-and-restore windows (1TB/hour performance)
• Capable of transferring data to tape
• Storage capacity can be scaled up to 40TB, in anticipation of expanding enterprise storage environments
• No need to change users' existing backup systems as it supports major backup software
• Can lower costs through centralization of information lifecycle management

Sales Price
Pricing to start at 45 million yen for standard 10 TB configurations

Potential Customers
Domestic manufacturers, financial institutions, government agencies, telecommunications carriers, medical institutions, etc.

Shipment Schedule
Shipment will begin in April 2004

About ADIC

Advanced Digital Information Corporation (NASDAQ: ADIC) is a leading provider of Intelligent Storage™ 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.* The Company's data management software, storage networking appliances, and disk-to-tape data protection 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, Fujitsu-Siemens, HP, IBM and Sun. Further information about ADIC is available at www.adic.com.

*IDC 2001 worldwide revenue and unit market share data for all automated systems using DLT, SDLT, LTO, 8mm or AIT drives; Gartner Dataquest, 2002 Market Shares and Forecasts for Tape Automation Systems, F. Yale, August 2002; and, Gartner Dataquest, Tape Automation Systems Market Shares, 2002, F. Yale, April 2003. ADIC and Scalar 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.