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Converting an aggregate to a mirrored aggregate

You can convert an existing aggregate to a mirrored aggregate to protect the data on the aggregate. You convert the aggregate to a mirrored aggregate by adding a plex to the aggregate.

Before you begin

The aggregate you are converting must have only one plex. This is because you add a plex to create a mirrored aggregate, and mirrored aggregates cannot have more than two plexes.

About this task

You can convert an aggregate to a mirrored aggregate in two ways:

Step

  1. Add a plex to the aggregate:
    If you are using the... Then...
    Manual method
    1. Use the storage disk show command to list the disks from which to choose.
    2. Choose the correct number and size of disks or array LUNs in the list.

      The disks or array LUNs should be from a different pool than the pool that is already being used by the aggregate.

    3. Use the storage aggregate mirror command with the -mirror-disklist parameter.

    This step adds a plex to the aggregate, making it a mirrored aggregate.

    Automatic method Use the storage aggregate mirror command.
    Example
    The following command manually adds a plex to the aggregate aggrD with disks 7.1, 7.2, 7.3, 7.4, and 7.5 that you selected, which makes aggrD a mirrored aggregate: storage aggregate mirror -aggregate aggrD -mirror-disklist 7.1, 7.2, 7.3, 7.4, 7.5
    Example
    The following command automatically adds a plex to the aggregate aggrE using disks that Data ONTAP selected, which makes aggrE a mirrored aggregate: storage aggregate mirror -aggregate aggrE