Where deduplication should occur on Windows

Article:HOWTO34223

Created: 2010-10-29

Updated: 2011-03-11

Article URL http://www.symantec.com/docs/HOWTO34223

Article Type
How To

Product(s)

Show all

Environment

Show all

Subject

Show all

Languages

Show all

Where deduplication should occur on Windows

The Deduplication property specifies the deduplication action for clients if you use either the NetBackup Deduplication Option or the PureDisk Deduplication Option. The following table describes the client direct deduplication options.

Table: Client direct deduplication options

Option	Description
Always use the media server (the default)	Always deduplicates the data on the media server. The default. Jobs fail if one of the following are true: The NetBackup Deduplication Engine on the deduplication storage server is inactive. The PureDisk storage pool is inactive.
Prefer to use client-side deduplication	Deduplicates data on the client and then send it directly to the storage server. NetBackup first determines if the client direct library on the storage server is active. If it is active, the client deduplicates the backup data and sends it directly to the storage server, bypassing media server processing. If it is not active, the client sends the backup data to a deduplication media server. The deduplication media server deduplicates the data.
Always use client-side deduplication	Always deduplicates the backup data on the client and then send it directly to the storage server. If a job fails, NetBackup does not retry the job.

Option

Description

Always use the media server (the default)

Always deduplicates the data on the media server. The default.

Jobs fail if one of the following are true:

The NetBackup Deduplication Engine on the deduplication storage server is inactive.
The PureDisk storage pool is inactive.

Prefer to use client-side deduplication

Deduplicates data on the client and then send it directly to the storage server.

NetBackup first determines if the client direct library on the storage server is active. If it is active, the client deduplicates the backup data and sends it directly to the storage server, bypassing media server processing. If it is not active, the client sends the backup data to a deduplication media server. The deduplication media server deduplicates the data.

Always use client-side deduplication

Always deduplicates the backup data on the client and then send it directly to the storage server.

If a job fails, NetBackup does not retry the job.

You can override the Prefer to use client-side deduplication or Always use client-side deduplication host property in the backup policies.

See Disable client-side deduplication (policy attribute) on Windows.

More information about client deduplication is available.

See General tab of the Client Attributes properties on Windows.

See Client Attributes properties on Windows.

See Offline option usage considerations and restrictions on Windows.

See Connect Options tab of the Client Attributes properties on Windows.

See Windows Open File Backup tab of the Client Attributes properties on Windows.

See Backlevel and upgraded clients that use Windows Open File Backup on Windows.