ADIC'S New CentraVision CDN Software Delivers Industry's Leading Internet Streaming Media Performance.

Business Editors, Technology Writers

REDMOND, Wash.--(BUSINESS WIRE)

May 16, 2001

Company Also Delivers Enhanced Version of CentraVision Software for

Real-time Broadcast Environments

Advanced Digital Information Corporation (Nasdaq:ADIC) today announced the introduction of a new version of its CentraVision(TM) file sharing software, one which enables Internet-based Content Delivery Networks (CDN) to achieve dramatic new levels of streaming media performance.

The new CentraVision CDN(TM) software sets new industry benchmarks by allowing a media server to deliver up to 800 simultaneous full-rate video streams (300kb/sec) from a single copy of a media file located on a central Fibre disk. The technology is also scalable, allowing multiple servers in a CDN to share the same set of centralized files to deliver thousands of full-rate video streams over the Internet. At the same time, ADIC announced a new upgrade to its original CentraVision SAN file sharing software designed to enhance that product's support for real-time, high performance editing and delivery demanded by broadcast production environments.

"The ability to provide rich media content via Internet Protocol marks one of the major convergences of technology for this decade, one that will have a profound impact on how consumers and businesses worldwide deliver and use information," commented Bill Britts, ADIC executive vice president of Sales and Marketing. "We believe that Internet-protocol delivery of rich media, principally streaming video, will have a major impact on how we get information about events, how we access entertainment, how we learn, and how we interact with each other. CentraVision is designed to give the companies providing Content Delivery Networks a powerful new tool that makes their job easier by leveraging intelligent storage networking technology."

"As web sites rapidly increase their video and rich media content, we expect the worldwide installed base of video servers in public Content Delivery Networks and in the enterprise to grow very rapidly -- from around 20,000 units in 1999 to more than 500,000 by 2005," said to Gerry Kaufhold, multimedia broadband services analyst at the Cahners InStat Group, a leading market research firm. "The features that CentraVision is supplying -- file sharing and the leveraging of server infrastructure by delivering high numbers of parallel data streams--provide a fundamental enabling technology for this important emerging application."

CentraVision CDN for Streaming Media

CentraVision CDN is intelligent storage management software that allows servers to sustain very high levels of parallel data streams, and provides the ability for multiple servers to share data stored on a common disk, even allowing them to access the same files at the same time. The CDN version of CentraVision has been specifically designed for use in storage network-based Internet Content Delivery Networks, where it supports up to 800 concurrent streams per server from a single file. The software's completely linear scalability allows delivery of a greater number of streams from the same, single file through the simple addition of more servers -- enabling thousands of streams from a single stored file with no discernable loss of streaming performance as more servers are added.

As a result, CentraVision eliminates inefficient duplication and transfer of files between servers, simplifies the job of managing files in CDNs, and leverages the power of servers by allowing them to provide higher numbers of simultaneous streams from a small number of files stored on a shared storage resource. CentraVision CDN will be used by OEMs and integrators as the base technology for delivering public content distribution networks, broadcasting applications and streaming video applications in the business community.

CentraVision 1.6 for High Performance Production Environments

The new 1.6 release of the original CentraVision file sharing (CVFS) system offers enhanced server clustering and fail-over support to provide real-time broadcast applications new levels of high availability operation. The CVFS system allows multiple host computers to transparently share data stored on centralized Fibre Channel disks over a high-bandwidth storage network. Because it lets different users share data down to the individual file level -- even allowing multiple users to work on the same file at the same time -- CVFS enables collaborative workflow, reduces the need to duplicate, move, and store different files, and saves time. The enhanced fail-over technology provides the emerging digital broadcast market a tool that combines high-speed collaborative workflow over a storage network with full redundancy features to provide improved support for real-time on-air editing and broadcast delivery applications.

The new CentraVision 1.6 also adds enhanced metadata performance, small file handling optimization, and it adds support for Windows 2000 and Linux running on Compaq's high-performance Alpha processor to its existing UNIX and Windows NT compatibility.

Both CentraVision CDN and CentraVision 1.6 are available now.

About ADIC(R)

Advanced Digital Information Corporation (Nasdaq:ADIC) is a leading storage solutions provider to the open systems marketplace, offering a broad range of Intelligent Storage(TM) products designed to enhance organizations' abilities to store, protect, manage and use their rapidly growing network data. ADIC products include technology-independent automated storage systems, specialized storage management software, and multiple-protocol storage networking (SAN/NAS) connectivity and management tools. ADIC storage products are available through a worldwide sales force and a global network of resellers and OEMs, including Dell, EMC, Fujitsu-Siemens and IBM. Further information about ADIC is available at www.adic.com.

ADIC is a registered trademark and CentraVision, CentraVision CDN, and Intelligent Storage are trademarks of Advanced Digital Information Corporation. All other product or service marks mentioned in this release should be considered the property of their respective owners.