Note the following prerequisites before using EMC Symmetrix disk arrays:

• The array administrator must allocate source and target devices before you create any NetBackup policies. See the array administrator for the device identifiers.

• The array administrator must allocate a gatekeeper device and a VCMDB (Volume Configuration Management Database) for all of the NetBackup clients. Storage servers should also have the appropriate number of gatekeeper devices configured.

  Note:

  Gatekeeper devices are not mandatory for UNIX clients.

  A VCMDB is a virtual LUN database that keeps track of which LUNs the client can see. A gatekeeper is a small disk that the DMX uses to pass commands between the client and the array.