4.0.0 HP Polyserve Matrix Server Administration Guide (T5392-96052, March 2010)

9 Manage disk quotas
The PSFS filesystem supports disk quotas, which limit the amount of disk space on a
filesystem that can be used for individual user’s files.
Hard and soft filesystem limits
The PSFS filesystem supports both hard and soft filesystem quotas. A hard quota
specifies the maximum amount of disk space on a particular filesystem that can be
used by files owned by the user. When a file owner reaches the hard limit, the
filesystem will not allow the owner to create files or to increase the size of an existing
file; any attempts to allocate more space will fail. The file owner will need to remove
files or reduce their size until the disk usage falls below the hard limit.
Soft limits provide a way to warn users when they are about to reach their hard limit.
A soft limit is typically set below the hard limit, and triggers the warning.
Enable or disable quotas
Quotas are enabled or disabled at the filesystem level. When quotas are enabled,
the filesystem performs quota accounting to track the disk use of each user having
an assigned filesystem quota. Quotas can be enabled only via the PolyServe
Management Console and Matrix Server utilities. Microsoft Windows utilities cannot
be used to enable or disable quotas on a PSFS filesystem.
When you create a PSFS filesystem, you can specify whether quotas should be
enabled and you can set quota options on the filesystem. (See “Create a
filesystem” on page 107.)
Quotas can also be enabled or disabled on an existing filesystem, using either the
PolyServe Management Console or Matrix Server commands. The filesystem will be
unmounted briefly during the enable/disable operation.
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