3.4.0 Matrix Server Administration Guide

Chapter 7: Configure PSFS Filesystems 81

There are two options:

• Static default quota. The default limits are explicitly assigned to the

user. Subsequent changes to the default values for the filesystem do

not affect the quota limits for the user. This is the default, and matches

the NTFS policy.

• Dynamic default quota. No explicit default limits are assigned to the

user. Instead, the effective limits applied to the user are the default

values for the filesystem at the time of each operation.

The File Accounting tab specifies whether real cost accounting or virtual

cost accounting should be used for sparse files.

• Real cost accounting. Sparse files are accounted against the file

owner’s quota according to the actual space used by the file (user data

and metadata). This is the default.

• Virtual cost accounting. Sparse files are accounted against the file

owner’s quota according to the entire virtual space used by the file

(virtual user data and actual metadata). This matches the NTFS policy.

If you want to change this option after the filesystem is created, you will

need to either disable quotas and then re-enable them with the changed

option, or recreate the filesystem.