To begin configuring quotas on your system, you should edit /etc/fstab to mount the affected filesystems with quotas enabled. For our example, we use an XFS filesystem mounted with user and group quotas enabled:

# grep quota /etc/fstab
/usr/users   /mnt/hdc1    xfs    usrquota,grpquota,noauto   0 0
# mount /usr/users