Apple Xsan 2 - Manual (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 affect 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 file system directory entries cached on
the client for each SAN volume. Increase this value if the volume contains a large number
of small files (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 files are closed: Lets you increase performance
by reducing the number of access time updates on a file that’s read frequently (for
example, streaming video). If not enabled, file access time is updated every time the
file 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 first set up your SAN, you manage users and groups using
Xsan Admin or another app.