# Configure the Distributed Storage As a Disk Library

Configure the Distributed Storage as a disk library so that it can be used as a backup target in the CommCell environment.

## Procedure

1. Create Deduplication Database (DDB) partition and an Index Cache folder on the NVMe disk,on the MediaAgents/proxies as follows. This is recommended for better performance.

       # mkdir /ws
       # mkfs.xfs /dev/$[nvme_vol_name]
       # mount /dev/$[nvme_vol_name] /ws
       # mkdir –p /ws/ddb/$[DDB_partition_name]
       # mkdir -p /ws/IndexCache
       # cd /opt/Commvault/Commvault/MediaAgent
       # ln -s /ws/IndexCache/IndexCache IndexCache

2. From the Command Center navigation pane, go to Manage > Storage > Disk.

   The Disk page appears.

3. In the upper-right corner of the page, click Add, and then select Disk Storage.

   The Add disk storage dialog box appears.

4. In the Name box, type a name for the storage library.

5. In the Backup location option, click Add.

   The Add backup location dialog box appears.

   From the MediaAgent list, select the MediaAgent in which the virtual disk is mounted.

   Note

   The list displays MediaAgents classified as Active (MediaAgents having license) and Inactive (MediaAgents having MediaAgent package installed, but license not consumed). The license is auto consumed if you select an inactive MediaAgent.

6. In the Type option,

   - Select Local to add a backup location using a local path.

     or

   - Select Network to add a backup location using a network path.

     1. In the User name and Password boxes, type the credentials for a user who has write access to the network device.

        or

        Move the Use saved credentials toggle key to the right.

        In the Name box, select the name of the user who has write access to the network device.

     2. In the Backup location box, enter the file path on the MediaAgent where the backup data is stored. This is the mount path location. For example, you can enter /ws/hedvig/CommvaultBackup

        where CommvaultBackup is the name of the vdisk.

   - Click Add.

7. If you entered a Distributed Storage location, a Hedvig cluster list appears. From the list, select a Hedvig cluster.

8. To enable deduplication on the storage, slide the Use deduplication toggle key to the right.

9. To specify the DDB location on the MediaAgent, in the Deduplication DB location option, click Add.

   The Add Deduplication DB location dialog box appears.

   1. Select the MediaAgent from the list.

   2. Enter the DDB path created in the NVMe disk in the Deduplication DB location box.

      You can add additional DDB partitions associated with other MediaAgents/proxies in the configuration. For more information about configuring additional DDB partitions, see Configuring Additional Partitions for a Deduplication Database.

10. Click Save.

    Configure the Index Cache to point to the Index Cache folder on the NVMe disk. For more information on adding the Index Cache folder in the MediaAgent, see Moving the Index Cache Directory.

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