The 1.1 version of Apple Xsan Update for 10.4 for Mac was provided as a free download on our website. The application lies within System Tools, more precisely General.
From the developer:
The 1.1 Update delivers overall improved reliability for Xsan and is required for all systems running 10.4. It includes fixes for: using Xsan on computers running Mac OS X and Mac OS X Server version 10.4 providing metadata controller services to 10.3.9 and 10.4 systems running Xsan 1.1 accessing Xsan volumes larger than 16 terabyte in size greater server stability when resharing Xsan volumes via NFS handling quotas with no associated user or group name maintaining access to Xsan volumes when metadata controller failovers occur operating Xsan in environments with a mix of 10.3.9 and 10.4 systems Important Notes: If any system in your SAN is running Xsan 1.1 on Mac OS X v10.4, then your metadata controllers must also run the same.
System Optimization
Device Assistants