Some NAS servers on the network may not have tape devices attached to them. As long as at least one NAS server has an attached tape device, that device can be used when backing up other NAS servers.
Example: NAS Three-way NDMP Backup
NAS Server 1 does not have a tape device attached to it, but NAS Server 2 does. The NDMP NAS Option can back up NAS Server 1’s data to the tape device attached to NAS Server 2. This configuration is known as NAS three-way NDMP backup.
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