Ten and a half months after the release of Xsan 1.4.1, Apple has released an update to its clustered file system. Xsan 1.4.2 is now available as both a downloadable package, an Admin update, and through Software Update.
Before you update, please read the detailed Xsan 1.4.2 notes. Especially note these requirements:
- Be sure that all Metadata Controllers (MDCs) are updated before you make any configuration changes.
- If upgrading system software to Mac OS X 10.5 Leopard, upgrade all Xsan 1.4.x systems to 1.4.2 before upgrading to Leopard.
- To prevent an inconsistent volume state, you should unmount, stop, and run the cvfsck command on each Xsan volume after the MDCs have been updated with Xsan 1.4.2 Update.
New features in this version include:
- mounting Fibre Channel LUNs on Mac OS X Leopard
- metadata controller failovers during power outages and network disconnects
- memory related errors that can result in slow system performance or hangs
- reducing fragmentation of large files and frame drops during ingest
- preventing file system metadata corruption
- hosting Xsan volumes on Intel-based metadata controllers
- defragmenting files after a volume bandwidth expansion
- compatibility with Apple and third party applications
Please post any comments in a special forum thread. And as always, we recommend going slowly with the update. Let those of us with test Xsans find any bugs before you do!