Apple Xsan 2 User Manual download pdf (Page 93)

Chapter 6 Manage clients and users 93

A volume remains mounted on a client even if the user logs out or the client computer

restarts. If you unmount a volume using Xsan Admin, or if the client computer has

Mac OS X Lion and the user unmounts the volume using Xsan preferences, the volume

remains unmounted after logout and restart. If a user unmounts the volume in the

Finder, it remounts in a few moments.

From the command line

You can also mount a volume on a client using the xsanctl command-line tool in

Terminal. For information, see the xsanctl man page or “Mount an Xsan volume” on

page 157.

Change mount options

You can use Xsan Admin to adjust settings that can aect volume access performance.

Change mount options:

1 In Xsan Admin, select Mounts in the SAN Assets list.

2 Select the volume in the Volume pop-up menu.

3 Select the client in the list.

4 Choose Edit Mount Options from the Action pop-up menu (gear) and change:

Directory cache size: Controls the number of le system directory entries cached on

the client for each SAN volume. Increase this value if the volume contains a large number

of small les (for example, if the volume hosts a home directory server or mail server).

Client worker threads: Controls the number of threads used to communicate with the

volume. You might increase this if you’re mounting many volumes on a client.

Delay access time updates until les are closed: Lets you increase performance

by reducing the number of access time updates on a le that’s read frequently (for

example, streaming video). If not enabled, le access time is updated every time the

le is read.

For more information, see the descriptions of these parameters in the mount_acfs

man page.

Manage users and groups

Depending on how you rst set up your SAN, you manage users and groups using

Xsan Admin or another app.

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Apple Xsan 2 User Manual Page 93