Veritas NetBackup™ Deduplication Guide

Storage unit name

A unique name for the new storage unit. The name can describe the type of storage. The storage unit name is the name used to specify a storage unit for policies and schedules. The storage unit name cannot be changed after creation.

Storage unit type

Select Disk as the storage unit type.

Disk type

Select PureDisk for the disk type for a Media Server Deduplication Pool.

Disk pool

Select the disk pool that contains the storage for this storage unit.

All disk pools of the specified Disk type appear in the Disk pool list. If no disk pools are configured, no disk pools appear in the list.

Media server

The Media server setting specifies the NetBackup media servers that can deduplicate the data for this storage unit. Only the deduplication storage server and the load balancing servers appear in the media server list.

NetBackup selects the media server to use when the policy runs.

Maximum fragment size

For normal backups, NetBackup breaks each backup image into fragments so it does not exceed the maximum file size that the file system allows. You can enter a value from 20 MBs to 51200 MBs.

For a FlashBackup policy, Veritas recommends that you use the default, maximum fragment size to ensure optimal deduplication performance.

For more information, see the NetBackup Snapshot Client Administrator's Guide:

http://www.veritas.com/docs/DOC5332

Maximum concurrent jobs

The Maximum concurrent jobs setting specifies the maximum number of jobs that NetBackup can send to a disk storage unit at one time. (Default: one job. The job count can range from 0 to 256.) This setting corresponds to the Maximum concurrent write drives setting for a Media Manager storage unit.

NetBackup queues jobs until the storage unit is available. If three backup jobs are scheduled and Maximum concurrent jobs is set to two, NetBackup starts the first two jobs and queues the third job. If a job contains multiple copies, each copy applies toward the Maximum concurrent jobs count.

Maximum concurrent jobs controls the traffic for backup and duplication jobs but not restore jobs. The count applies to all servers in the storage unit, not per server. If you select multiple media servers in the storage unit and 1 for Maximum concurrent jobs, only one job runs at a time.

The number to enter depends on the available disk space and the server's ability to run multiple backup processes.