Apple Xsan 1.0 - Manual (Page 44)

44 Chapter 3 Managing SAN Storage
From the Command Line
You can also add LUNs to a storage pool by modifying the associated volume
configuration file and using the
cvlabel command in Terminal. For more information,
see the cvfs_config and cvlabel man pages or “The Volume Configuration File” on
page 96 and “Labeling LUNs (cvlabel)” on page 90.
Adding a Storage Pool to a Volume
You can add free space to a SAN volume by adding a storage pool to the volume.
Note: A volume can’t contain more than 512 storage pools.
To add a storage pool:
1 Prepare the LUNs you’ll use to create the storage pool.
2 Open Xsan Admin and select the SAN in the SAN Components list.
3 Click Setup, then click Storage.
4 Select the volume you’re expanding, then click the Add Storage Pool button (next to
the list).
5 In the dialog that appears, specify:
Storage Pool Name: Type a name for the storage pool. If the OK button is disabled
when you finish typing the name, the name is reserved; try another. For a list of
reserved names, see Chapter 7.
Use For: Choose the types of data that can be stored on the storage pool.
Permissions: Choose the type of access clients have to this storage pool.
Stripe Breadth: Specify how much data is written to or read from each LUN in the
storage pool before moving to the next LUN. This value can affect performance. If
you’re not sure what value to use, use the default (64 blocks) or see “Choosing Stripe
Breadth for a Storage Pool” on page 50.
Multipath Method: Choose Static to use the same connection for access to the
storage pool or Rotate to alternate among the available connections.
6 Click OK.
7 Click Available LUNs, drag LUNs to the storage pool, and click Save.
From the Command Line
You can also add a storage pool by modifying the associated volume configuration file
in Terminal. For more information, see the cvfs_config man page or “The Volume
Configuration File” on page 96.
LL0192.book Page 44 Thursday, July 29, 2004 5:20 PM