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  1. Home
  2. NetBackup™ NAS Administrator's Guide
  3. Section III. Using NDMP
  4. Introduction to NetBackup for NDMP
  5. About the NDMP restore process
NetBackup™ NAS Administrator's Guide

About the NDMP restore process

Because of the design of the NDMP protocol, only an administrator on a NetBackup server (primary or media) can restore files from NDMP backups. During a restore, the administrator browses the file catalog and selects files from NDMP images in the same manner as for standard backup images.

The following events occur during a restore, in this order:

  • The NetBackup for NDMP server looks in its Enterprise Media Manager (EMM) database for the tape that contains the backup, and asks ltid to mount that tape.

  • ltid on the NetBackup for NDMP server sends the necessary NDMP commands to load the requested tape on the storage device.

  • NetBackup sends the NDMP commands that are necessary to have the NDMP server application perform a restore operation to the disk. The restore data travels in one of two ways:

    • From a tape drive to a local disk (tape drive and disk are on the same NDMP host)

    • Over the network, from an NDMP host (or NetBackup media server) with a locally attached storage device to another NDMP host (three-way backups or restores)

  • The NDMP server application sends status about the restore operation to the NetBackup for NDMP server.

The following figure shows the NetBackup processes involved in NDMP restores.

Figure: NetBackup restore processes

NetBackup restore processes

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