Apple Xsan 1.4 - Manual (Page 99)

Chapter 3 Managing SAN Storage 99
Setting the Volume Allocation Strategy
You can set the allocation strategy for a volume to determine the order in which data is
written to the volume’s storage pools.
To set the allocation strategy:
1 In Xsan Admin, select the volume in the SAN Components list, click Clients, and
unmount the volume from all clients and controllers.
2 Click Stop Volume.
Important: If you forget to unmount the volume (in step 1) before you stop it, be sure
to click Disconnect in the “server no longer available” alert that appears on any
computer that has the volume mounted.
3 Select the SAN that the volume belongs to, click Setup, and click Storage.
4 Double-click the volume in the list.
5 Choose a value from the Allocation Strategy pop-up menu.
 Round Robin: New data is written to the next available storage pool in the volume.
 Fill: All data is stored on the first storage pool until it is full, then on the next storage
pool, and so on.
 Balance: New data is written to the storage pool that has the most free space.
6 Click OK, and then click Save.