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  1. Home
  2. NetBackup™ NAS Administrator's Guide
  3. Section II. Using NAS-Data-Protection (D-NAS)
  4. Multi-host backup for volumes
  5. Stream distribution across multiple backup hosts
NetBackup™ NAS Administrator's Guide

Stream distribution across multiple backup hosts

No additional options are available to enable multi-host backup of a NAS share. NetBackup automatically determines when to use multiple hosts based on the number of streams specified in the D-NAS policy. Note the following:

  • If the policy specifies fewer than 20 streams, NetBackup uses a single host to back up the NAS share.

  • If the policy specifies 20 or more streams, NetBackup distributes the backup streams evenly across an optimal number of hosts. Any host ready to start backup streams is included automatically.

  • To optimize host resource usage, NetBackup starts at least ten backup streams on each host.

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