NetBackup media server data mover example (UNIX only)
In this off-host backup method, a NetBackup media server reads the backup data from the client snapshot and writes the data to a storage device. The NetBackup media server uses the mapping information that the client provides to read the data as raw disk extents (units consisting of physical address and length). This method is not supported for Windows clients.
This mapping-based data movement is in addition to the normal backup processing that the media server performs in a master server or media server configuration.
Note:
For a multi-ported SCSI disk array, a Fibre Channel SAN is not required.
The figure shows the following phases in the backup process:
Phase | Action |
|---|---|
Phase 1 | On LAN, NetBackup master server tells the client to map the snapshot data on the disk. |
Phase 2 | On LAN, client sends the mapping information to the media server. |
Phase 3 | Media server processes the mapping information and reads client data over the SAN, from the addresses that the client provides. |
Phase 4 | Media server writes data across the SAN to storage. |