HP StorageWorks Clustered File System 3.6.0 Windows Storage Server Edition Administration Guide (403103-005, January 2008)

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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 HP Management Console and HP Clustered File System
utilities. Microsoft Windows utilities cannot be used to enable or disable
quotas on a PSFS filesystem.