Consider the following points before selecting a storage destination:

• If the site contains only one storage unit or if there is no storage unit preference.

  • Specify Any Available for the Policy storage attribute.

  • Do not specify a storage unit at the schedule level.

    See Override policy storage schedule attribute.

  • In this situation, do not configure all storage units to be On Demand Only. NetBackup may be unable to find an available storage unit for the backups.

• If a specific storage unit is designated and the unit is unavailable, backups cannot run for those policies and the schedules that require the unit.

• If Any Available is selected, any Basic disk storage unit that is not assigned to a storage group is considered available for disk spanning.

  See Media properties.

• To limit the storage units available to a policy, select a storage unit group that contains only the units you want the policy to use.

  Another method to limit the storage units available to a policy is the following:

  • Create a volume pool that contains the volumes that are available only to the specific storage units.

    See Adding a volume pool.

    If the Scratch pool option is enabled for the volume pool, any storage unit has access to the volumes in the volume pool. For this method to work, do not enable Scratch pool for the volume pool.

    See About scratch volume pools.

  • In the policy, set Policy volume pool to the volume pool that is defined in the previous step.

  • For all policies, set Policy storage attribute to Any Available.

• A policy may specify a storage unit group. Make sure that one of the storage units within the group is set to On Demand Only to satisfy the policy requirement.