Apple Xsan 1.0 - Manual (Page 32)

32 Chapter 3 Setting Up a SAN Volume
Step 9: Create Volumes
Next, you’ll create the volumes your users will see.
1 In Xsan Admin, click Storage on the Setup pane.
2 Click the New Volume button (next to the empty list).
3 Type a name for the volume.
Use only uppercase letters (A-Z), lowercase letters (a-z), and numbers (0-9). Don’t
include spaces, underscores (_), or hyphens (-).
This is the name users will see in the Finder when the volume is mounted.
4 Unless you have a specific need, leave the maximum log size set to the default value.
This is the amount of space the log file occupies on the controller’s startup disk.
5 Don’t adjust the block allocation size unless you have specific performance tuning
needs.
For optimum performance with Xserve RAID systems, the block allocation size
multiplied by the stripe breadth (which you set for each storage pool you add to the
volume) should equal 1 MB (1048576 bytes). For more information, see the Xsan
Administrator’s Guide.
6 Choose an allocation strategy. This determines the order in which data is written to the
storage pools that make up the volume. You can choose:
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.
Balance: New data is written to the storage pool that has the most free space.
7 Click OK.
Repeat these steps if you want to create additional volumes.
Now you’re ready to add storage pools to each volume.
LL2652.book Page 32 Wednesday, July 28, 2004 3:45 PM