Creating a mirrored aggregate, where the user selects the disks with assistance from Data ONTAP

You can preview the disks that Data ONTAP would select if it were to create a mirrored aggregate.

Steps

1. Enter the following command:aggr create aggrname -n -m ndisks[@disk-size]

   aggrname is the name of the mirrored volume you are creating.

   -n instructs Data ONTAP not to create the mirrored volume, but to display the disks that it would use if it did create the mirrored volume.

   -m specifies a mirrored aggregate to Data ONTAP.

   ndisks is the number of disks to use. ndisks must be an even number.

   disk-size specifies the disk capacity, in gigabytes. You must have enough available disks of the size you specify.

   Data ONTAP returns an aggr create command that specifies the disks.

2. As required, use one of the following choices:

   If...	Then...
   You want to use the disks specified by Data ONTAP.	At the prompt, enter the aggr create command specified.
   You want to substitute other disks for one or more disks specified by Data ONTAP.	At the prompt, enter the aggr create command and substitute other disks for one or more of the disks specified.

   Example

   The following command previews the command that Data ONTAP would use when creating a 4-disk mirrored aggregate called aggrB.

   aggr create aggrB -n -m 4

   Data ONTAP returns the following command:

   aggr create aggrB -m -d 5.1 5.3 -d 8.3 8.4