NetApp
vFiler Units : Understanding vFiler units : What vFiler units are

What vFiler units are
A vFiler unit is a partition of a storage system and the associated network resources. Each vFiler partition appears to the user as a separate storage system on the network and functions as a storage system.
Access to vFiler units can be restricted so that an administrator can manage and view files only on an assigned vFiler unit, not on other vFiler units that reside on the same storage system. In addition, there is no data flow between vFiler units. When using vFiler units, you can be sure that no sensitive information is exposed to other administrators or users who store data on the same storage system.
You can assign volumes or LUNs to vFiler units in NetApp Management Console. You can create up to 65 vFiler units on a storage system.
To use vFiler units you must have the MultiStore software licensed on the storage system that is hosting the vFiler units.
You can use vFiler templates to simplify creation of vFiler units. You create a template by selecting a set of vFiler configuration settings, including CIFS, DNS, NIS, and administration host information. You can configure as many vFiler templates as you need.