# Requirements for Avamar NDMP Data

All FS migration prerequisites documented online must be completed first, including MCCLI client configuration (for discovering the list of Avamar clients and backup jobs). Once these steps are completed, the additional prerequisites required for NDMP Avamar migration must be completed as follows:

1. As is known, Avamar requires an “NDMP Accelerator” to communicate with the NAS device, and the NDMP Avamar restore command (`avndmp`) is executed on the NDMP Accelerator node, which is a Linux-based system. Therefore, the Commvault File System Agent must be installed on this NDMP Accelerator node.

2. For the Windows staging server, a Windows-based system with the Commvault File System Agent installed is required, where the NAS device staging space is mounted using the CIFS protocol.

3. For the parameters `--sysdir` and `--vardir` used in the `avndmp` command, you must manually create the required directories under the specified `sysdir` and `vardir` paths. These directories must be named after the filers being migrated. The folder names must exactly match the filer names (for example, Filer1) so that the migration workflow can correctly construct the `avndmp` command and reference the appropriate directory paths.

   For example:

   ```--sysdir=/usr/local/avamar/etc/Filer1

   --vardir=/usr/local/avamar/var/Filer1 ```

   Verifying that these directories are created in advance with the correct naming convention is required for successful execution of the NDMP Avamar migration.

4. The required credentials (that is, the AvNDMP restore command credentials) must be configured in the Credential Manager. These credentials are used by the workflow when executing the `avndmp` command, specifically through the `--id` and `--password` parameters (as shown in the example command line).

   Once the credentials are configured in the Credential Manager, you can select the appropriate credential from a drop-down list in the Data Import report for use during the migration workflow.

       avndmp --operation=restore --id="$[ID]" --password="$[password]" --server=$[server] --acnt=$[account] --sysdir="$[sysdir path]" --vardir="$[vardir path]" --labelnum=$[label_number] --restoretarget="$[restore_path]" --fileraddr=$[filer_address]

5. Add the bEnableAvamarNDMPMigration key under Settings.

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