The Xsan 2 SAN Data Storage Consolidation and File Sharing Software from Apple allows you to set up an enterprise-level Storage Area Network (SAN) using Apple Xserve RAID computers. You can link multiple Xserve RAIDs together using Fibre-Channel switches; computers in your network running OS X with Xsan installed will be able to address them as a single volume. This gives users in your network access to petabytes of data at Fibre-Channel speeds. This is an excellent choice for users in performance intensive environments who require access to the large amounts of data stored on your Xserve RAID servers.