Apple Xsan 2 - Manual (Page 138)

138 Appendix A Upgrade to Xsan 2.3
Step 11: Enable extended attributes
If you have only Macs on your SAN, enable extended attributes on your SAN volumes
to improve volume performance and efficiency.
Important: Enabling extended attributes can’t be undone.
WARNING: To avoid data loss, clients with Quantum’s StorNext File System (Windows,
AIX, IRIX, Linux, and Solaris computers) must not access volumes that use extended
attributes.
Enable extended attributes:
1 Open Xsan Admin and select Volumes in the SAN Assets list.
2 Select the volume and choose Edit Volume Settings from the Action pop-up menu (gear).
3 Click to select “Enable on this volume” next to Extended Attributes.
The time it takes to convert the volume to use extended attributes depends on
the number of files on the volume—it might take several hours for a large volume.
During this time, the volume is mounted only on the converting controller and can’t
be used by clients. The volume is mounted on clients and other controllers when the
conversion is finished.
Step 12: Change filename case sensitivity
If all your SAN computers have Mac OS X Lion or Lion Server, you can specify whether
a volume ignores capitalization in filenames. For example, a volume can consider
myfile, MyFile, and MYFILE to be the same or different filenames.
For best performance with volumes that you share using the SMB protocol, make them
case insensitive.
Change filename case sensitivity for a volume:
1 In Xsan Admin, select Volumes in the SAN Assets list.
2 Select the volume and choose Edit Volume Settings from the Action pop-up menu (gear).
3 Select or deselect the checkbox next to Case Insensitivity and click OK.
When you change case sensitivity, Xsan checks all existing filenames to make sure the
change won’t result in filenames being considered the same. This check can take a while.
If Case Insensitivity is selected, the volume considers filenames to be the same if they’re
spelled alike but capitalized differently.
If Case Insensitivity is not selected, the volume considers filenames to be different if
they’re spelled alike but capitalized differently.
Note: After you click OK, the volume is unmounted from all Xsan computers, and then
remounted.