About quotas for usage
Disk quotas limit the usage for users or user groups. You can configure disk quotas for file systems or for CIFS home directories.
Note:
Quotas work over NFS, but quota reporting and quota details are not visible over NFS.
Users and groups visible through different sources of name service lookup (nsswitch), local users, LDAP, NIS, and Windows users can be configured for file systems or CIFS home directory quotas.
There are two types of disk quotas:
Usage quota (numspace) - limits the amount of disk space that can be used on a file system.
The numspace quota value must be an integer with a unit. The minimum unit is KB. VxFS calculates numspace quotas based on the number of KBs. The range for numspace is from 1K to 9007199254740991(2^53 - 1)K.
Inode quota (numinodes) - limits the number of inodes that can be created on a file system.
An inode is a data structure in a UNIX or UNIX-like file system that describes the location of some or all of the disk blocks allocated to the file.
The numinodes quota value must be an integer without a unit, and the range is from 1 to 9999999999999999999(19bit).
0 is valid for numspace and numinodes, which means the quota is infinite.
Access Appliance supports disk quota limits greater than 2 TB.
In addition to setting a limit on disk quotas, you can also define a warning level, or soft quota, whereby the Access Appliance administrator is informed that they are nearing their limit, which is less than the effective limit, or hard quota. Hard quota limits can be set so that a user is strictly not allowed to cross quota limits. A soft quota limit must be less than a hard quota limit for any type of quota.
Note:
The alert for when a hard limit quota or a soft limit quota is reached in Access Appliance is not sent out immediately. The hard limit quota or soft limit quota alert is generated by a cron job scheduled to run daily at midnight.