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Comparing plexes of a mirrored aggregate

The plexes of a mirrored aggregate are almost always synchronized. However, you might need to compare the plexes of a mirrored aggregate. You can also choose to correct any differences between the plexes.

Before you begin

The mirrored aggregate must be online before you can compare the plexes.

About this task

Comparing plexes might affect system performance.
When comparing the two plexes of a mirrored aggregate, you can choose one of the following options.
  • Data ONTAP compares plexes without correcting differences. This is the default behavior.
  • Data ONTAP compares plexes and corrects the differences it finds. To correct differences, you need to specify which plex to correct. The plex is specified as plexnumber (0, 1, and so on).
    Attention: This process might use advanced Data ONTAP commands. Contact technical support before correcting differences using this option.

Step

  1. To compare the two plexes of a mirrored aggregate, choose one of the actions from the following table.
    If... Then...
    You do not want Data ONTAP to correct differences Enter the following command:aggr verify start aggrname -n

    aggrname is the name of the mirrored aggregate whose plexes you are comparing.

    You want Data ONTAP to correct differences Enter the following command:aggr verify start aggrname -f plexnumber

    aggrname is the name of the mirrored aggregate whose plexes you are comparing.

    Note: If aggrname is not specified, Data ONTAP compares the plexes of all mirrored aggregates that are online.