HP StorageWorks Clustered File System 3.6.1 Windows Storage Server Edition administration guide (AG515 - 96007, August 2008)

Chapter 9: Configure PSFS Filesystems 104
The Quotas tab allows you to specify whether disk quotas should be
enabled on the filesystem. You can enable or disable quotas on a
filesystem at any time. (See “Enable or Disable Quotas” on page 128.)
When you enable quotas, you can also set default hard and soft quotas
and select other quota parameters.
To enable quotas on the filesystem, check the “Enable quotas” checkbox.