APC Disk On-line Server NAS-2100 - Manual (Page 36)

• Quota
To allocate disk volume efficiently, you can specify the quota that can be used
by each user. When quota is set, users are not allowed to further use disk
space once they have reached their quota limit. By default, no limitations are
set for users. You can modify the following two options:
9 Enable quota for all users
9 Quota size on each disk volume
36