Disk quota system overview

The disk quota system allows system administrators to control the number of files and data blocks that can be allocated to users or groups.

Disk quota system concept
The disk quota system, based on the Berkeley Disk Quota System, provides an effective way to control the use of disk space. The quota system can be defined for individual users or groups, and is maintained for each journaled file system (JFS and JFS2).
Recovering from over-quota conditions
You can recover from over-quota conditions by reducing file system usage.
Setting up the disk quota system
Typically, only those file systems that contain user home directories and files require disk quotas.

Parent topic: Users, groups, and passwords