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  1. Home
  2. Veritas NetBackup™ OpenStorage Solutions Guide for Disk
  3. Planning your deployment
  4. About storage unit groups for OpenStorage
Veritas NetBackup™ OpenStorage Solutions Guide for Disk

About storage unit groups for OpenStorage

You can use a storage unit group as a backup destination for OpenStorage storage. A storage unit group must contain only the storage units that have the same type of OpenStorage appliance as the storage destination.

Storage unit groups avoid a single point of failure that can interrupt backup service.

The best storage savings occur when a backup policy stores its data in the same deduplication destination disk pool instead of across multiple disk pools. For this reason, the Failover method for the Storage unit selection uses the least amount of storage. All of the other methods are designed to use different storage every time the backup runs. Veritas recommends that you select the Failover method for the Storage unit selection type.

Table: Requirements and limitations for storage unit groups

What

Description

Requirements

A group must contain storage units of one storage destination type only.

Limitations

NetBackup does not support the following for storage unit groups:

  • Optimized duplication of deduplicated data. If you use a storage unit group as a destination for optimized duplication of deduplicated data, NetBackup uses regular duplication.

    See About OpenStorage optimized duplication within the same domain.

  • Optimized synthetic backups. If NetBackup cannot produce the optimized synthetic backup, NetBackup creates the more data-movement intensive synthetic backup.

    See About OpenStorage optimized synthetic backups.

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