# Associating a MediaAgent to a Disk Storage

You can associate one or more MediaAgents to a disk storage.

A MediaAgent can have one or both of the following roles:

- Storage: The MediaAgent with this role manages the backup data.
- DDB: The MediaAgent hosts the deduplication database. The software automatically selects the MediaAgents to host the DDBs for optimal usage. The software hosts the new DDBs on the MediaAgents when the software adds more deduplication databases (DDBs) for horizontal scaling or when a DDB is sealed and a new DDB is created.

Note

When the software creates new deduplication databases in a storage pool by horizontal scaling of deduplication databases (DDBs), the software automatically selects DDB location and the MediaAgent with DDB role for optimal usage of resources. The location can be different from the existing location.

# Before You Begin

- User must have MediaAgent Management permission on the MediaAgent.
- User must have edit permission on the storage pool.
- User must have Library Administration or Library Management permission on the storage pool to perform the following operations:
  - Add or remove Storage role
  - Add or remove both Storage and DDB roles

# Procedure

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

   The Disk page appears.

2. Click the disk storage that you want to associate a MediaAgent with.

   The disk storage page appears.

3. Click the Backup locations tab.

4. In the Associated MediaAgents section, click Add.

   The Associate MediaAgent dialog box appears.

5. From the MediaAgent list, select a MediaAgent.

6. In the Roles, select the following roles:

   - Storage: Use the MediaAgent to store the backup data.

   - DDB: Use the MediaAgent to host the deduplication database.

7. If an existing backup location does not have a shared path configured for the MediaAgent, the backup location appears in the Enter Missing Shared Path section. Specify a shared path that provides access to the backup location.

   Use the appropriate shared path based on the operating system of the MediaAgent being associated.

   Windows MediaAgent

   Enter the Windows shared path in UNC format.

   Format: `\\<HostMediaAgent>\<ShareName>`

   Example: `\\WinMA01\Backups`

   Unix MediaAgent

   Enter the Unix shared path that maps to the same storage location.

   Format: `/mount_point/directory`

   Example: `/mnt/backups`

8. Click Save.

# Related Topics

To disassociate or remove a MediaAgent from a disk storage, remove all the roles for the MediaAgent. For instructions, see Modifying the Roles Associated with a MediaAgent.

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