Performing dump and restore operations for a failed node

You can use the emulated node and peripheral devices attached to the takeover node to perform dump and restore operations for the failed node.

Any dump commands directed to the failed node’s tape drives are executed on the takeover node’s tape drives. Therefore, any dump commands that you execute using a scheduler, such as the cron command, succeed only under the following conditions:

  • The device names are the same on both nodes in the HA pair.
  • The dump commands for the takeover node and the emulated node are not scheduled to occur during the same time period; the takeover node and the emulated node cannot access the tape drives simultaneously.

Because the peripheral devices for a failed node are inaccessible, you perform dump and restore operations for a failed node by using the emulated node (available using the partner command on the takeover node), making sure that you use a peripheral device attached to the takeover node.

For more information about performing dump and restore operations, see the Data ONTAP Data Protection Tape Backup and Recovery Guide for 7-Mode.

  1. Issue the backup or restore command, either in partner mode or as an argument in the partner command. Issuing a restore command in partner mode is shown in the following example:
    node1 (takeover)> partner
    node1/node2> restore [options [arguments]]
    node1 (takeover)> partner
    
    Issuing a restore command as an argument in the partner command:
    node1 (takeover)> partner restore [options [arguments]]