Apple has introduced a software update for Xsan, bringing the software to version 1.0.1.

The update improves reliability and is recommended for all systems. It includes a number of improvements for Xsan users, with extensive information about the update available from Apple.

It includes improvements for:

Using the ’mv’ command to move files from Xsan (ACFS) to Mac OS Extended (HFS+) volumes;
Saving files over 4GB via SMB/CIFS to an Xsan volume hosted on Mac OS X Server;
Greater server stability when resharing Xsan volumes via NFS;
Eliminating spontaneous metadata controller failovers that can result in slow file performance.