Requirements for restoring a system

The "restore" operation requires:

Platform compatibility

Note that the NetProfiler being restored must be:

  • Running the exact same software version as the backup copy.

  • Running on the same platform as the system from which the backup copy was made, or a platform one step higher.

Specifically, a backup copy made from:

  • A cloud or virtual NetProfiler can restore a:

    • Cloud NetProfiler

    • Virtual NetProfiler

    • Model xx70 hardware-based NetProfiler

    • Model xx80 hardware-based NetProfiler with no expansion modules

  • A model xx70 hardware-based NetProfiler can restore a:

    • Model xx70 hardware-based NetProfiler

    • Model xx80 hardware-based NetProfiler with no expansion modules

  • An Enterprise NetProfiler can restore an Enterprise NetProfiler that has the same number of expansion modules or fewer.

Note the following:

  • If migrating to a cluster with more modules than present in the backup, restore the image when the clusters have the same number of components, and then add the remaining modules.
  • A backup copy made from a system that has a SAN device cannot restore a system that does not have the same SAN configuration.

Password-less access

Both backup and restore operations require the same system changes with respect to:

  • Shell Access - Shell access must be enabled via the Administration > Appliance Security > Security Compliance page in the user interface.

  • SSH Access - Password-less SSH access is required between the NetProfiler and the backup server. This means you must share SSH keys between the NetProfiler and the backup server.

To set up password-less access to the backup server

  1. Log into the command line interface of the NetExpress or Standard NetProfiler, or the UI Module of the Enterprise NetProfiler to be restored.

  2. Run the following command:

cat /opt/cascade/vault/ssh/mazu/id_rsa.pub | ssh admin@10.38.7.2 "cat >> .ssh/authorized_keys2"

(where "admin@10.38.7.2" and ".ssh/authorized_keys2" are examples).

To set up password-less access from the backup server to the system being restored

  1. Log into the backup server.

  2. Run the following command:

cat /home/admin/.ssh/id_rsa.pub | ssh mazu@10.38.7.2 "cat >> /opt/cascade/vault/ssh/mazu/authorized_keys2"

(where "home/admin" and ".ssh/id_rsa.pub" are examples).

Link speed

The backup system must be accessible via SSH at an effective speed of at least 10 Mbps.

Password

The image created by the backup operation is protected by a password. You must use this password when performing a restore operation.

Licenses

Before beginning the restore operation, install all applicable licenses on the system that is to be restored. Licenses are installed using the Administration > Licenses page or the user interface.

Restoring a system