Expanding an aggregate to the 64-bit format

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If your system contains 32-bit aggregates, you must expand them to the 64-bit format on your 7-Mode system before transitioning to Data ONTAP 8.3 or later versions, because those versions of Data ONTAP do not support the 32-bit format.

  • If the aggregate contains destination volumes for a SnapMirror relationship with a 32-bit source volume, the aggregate containing the source volume must be expanded before expanding the aggregate containing the destination volume.

For volumes in a SnapMirror relationship, the destination volume inherits the format of the source volume while the mirror is intact. If the aggregate you are expanding contains a destination volume whose source is a 32-bit volume and you break the mirror before expanding the aggregate, the destination volume is expanded to the 64-bit format. However, if you reestablish the mirror and the source volume is still 32-bit, the destination volume returns to the 32-bit format. For this reason, you must expand the aggregate containing the source volume before reestablishing the SnapMirror relationship if you want to expand all 32-bit volumes in the aggregate to the 64-bit format.

Steps
  1. Enter advanced privilege mode:

    priv set advanced

  2. Initiate the expansion:

    aggr 64bit-upgrade start aggr_name

  3. Perform the appropriate action:

    If the command…​ Then…​

    Initiates successfully

    Proceed to the next step.

    Indicates that one or more volumes could not be expanded because they did not have enough space

    Retry the command, adding the grow-all option.

    Indicates that the expansion could not be completed for some other reason

    Perform the appropriate action, based on the issue outlined in the error message.

  4. Display the status of the expansion:

    aggr 64bit-upgrade status aggr_name

    The current status of the expansion is displayed. When the message indicates that there is no upgrade in progress, the expansion is complete.

  5. Confirm that all volumes in the aggregate are 64-bit format:

    aggr 64bit-upgrade status aggr_name -all

  6. Return to administrative privilege mode: priv set admin

The aggregate is expanded to the 64-bit format. However, even if all volumes are expanded, some 32-bit Snapshot copies might remain. The presence of 32-bit Snapshot copies in the source volumes prevents an upgrade or transition to Data ONTAP 8.3 or later.