If you are sharing Xsan volumes with OS X Server over SMB / CIFS with Xsan 2.2, you may run into some errors copying files. Files may copy fine from Windows workstations to the Xsan volume. Copying files off the Xsan causes the following error:
Items Not Found:
This is no longer located in X:\. Verify the item's location and try again.
To resolve this, edit the /etc/smb.conf file on the Xsan re-share server and change the following line:
stream support = yes
stream support = no
More information could be found in Apple KB TS3179
Please note this is not persistent after OS X Server updates.