Apple Xsan 1.4 - Manual (Page 145)

Chapter 7 Solving SAN Problems 145
Xserve RAID LUNs Aren’t Accessible over Fibre Channel
 If you are using a Vixel 355 Fibre Channel switch, connect the Xserve RAID systems to
an FL (arbitrated loop) port on the switch.
 Try restarting the computer that doesn’t see the LUNs.
 Check the configuration of the Fibre Channel switch to be sure the SAN components
are in the same Fibre Channel zone.
You’re Unable to Restart a Volume After Adding LUNs or
Storage Pools
If you can’t restart a volume after you add LUNs or storage pools, you can follow these
steps to return the volume to its previous state.
To restore the previous volume configuration:
1 Quit Xsan Admin.
2 Delete the file /Library/Filesystems/Xsan/config/.cfg from each of the
volume’s controllers.
3 On each controller, rename the volume’s previous configuration file:
/Library/Filesystems/Xsan/config/.cfg.backup
to:
/Library/Filesystems/Xsan/config/.cfg
4 Open Xsan Admin and restart the volume.