About alternate client backup
With this feature, all backup processing is off-loaded to another client. Off-loading the work to an alternate client saves computing resources on the primary client. The alternate client handles the backup I/O processing, and the backup has little or no effect on the primary client.
The following diagram shows alternate client backup. A NetBackup master server is connected by means of a local or wide-area network to two clients and a media server. The primary NetBackup client contains the data to be backed up. A snapshot of that data is created on the alternate client (perhaps at another site). The alternate client creates a backup image from the snapshot, using original path names, and streams the image to the media server.
The figure shows the following phases in the alternate client backup process:
Phase | Action |
|---|---|
Phase 1 | Primary and alternate client collaborates to create the snapshot on the alternate client. |
Phase 2 | Alternate client sends the snapshot data to the media server. |
Phase 3 | Media server reads the snapshot data from the alternate client. |
Phase 4 | Media server writes data to local storage. |