User Guide

76 Chapter 5 Managing Clients and Users
Changing Mount Options
You can use Xsan Admin to adjust settings that can affect volume access performance.
To change mount options:
1 In Xsan Admin, select Mounts in the SAN Assets list.
2 Select the client in the list.
3 Select the volume in the Volume pop-up menu.
4 Choose Edit Mount Options from the Action (gear) pop-up menu.
Directory cache size: Controls the number of file system directory entries that are
cached on the client for each SAN volume. Increasing this value makes sense if the
volume contains large number of small files (for example, if the volume is hosting a
home directory server, mail server, or calendar server).
Client worker threads: Controls the number of processes used to communicate with
the volume. You might increase this if you are 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 is read frequently (streaming
video, for example). 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.