Apple Xsan Manuale Utente Scaricare il pdf (Pagina 56)

To add a LUN to a storage pool:

1 If you haven’t already done so, connect the RAID system that hosts the LUN to the SAN

Fibre Channel network and power on the device.

2 In Xsan Admin, select Volumes in the SAN Assets list.

3 Select the volume in the list and choose Expand Volume from the Action (gear) pop-

up menu.

4 In the Label LUNs pane of the assistant, choose whether you want to label unlabeled

LUNs individually or sequentially based on a label prex.

If you use a label prex, Xsan Admin adds a number to the end of the prex to create

a label for each LUN. For example, if you use the prex “LUN,” your LUNs are labeled

“LUN1,” “LUN2,” and so forth. Already labeled LUNs aren’t aected.

If you label LUNs individually, click Edit LUN Label on the next pane and enter a

new label.

If your LUNs are already labeled, they aren’t changed.

5 In the Congure Volume Storage pane, drag the new LUNs to anity tags (or storage

pools, if this is a custom volume).

6 Click Continue to unmount and stop the volume, add the storage, and remount the

expanded volume.

For best performance, defragment the volume after adding LUNs to a storage pool so

that les are striped eciently across all LUNs.

From the Command Line

You can also add LUNs to a storage pool by modifying the associated volume

conguration le and using the cvlabel command in Terminal. For more information,

see the cvfs_config and cvlabel man pages (% man -M /Library/Filesystems/

Xsan/man/ 4 cvfs_config) or “Xsan Conguration Files” on page 12 2 and “Labeling,

Listing, and Unlabeling LUNs (cvlabel)” on page 116 .

Rearranging Fibre Channel Connections

If you need to rearrange Fibre Channel connections when adding LUNs to your SAN,

unmount SAN volumes from clients before you disconnect Fibre Channel cables or

turn o Fibre Channel switches. Otherwise, if you unplug or interrupt a Fibre Channel

connection between a client and a mounted volume, you might cause problems with

client applications, making the volume dicult to remount.

56 Chapter 4 Managing SAN Storage

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Apple Xsan Manuale Utente Pagina 56