How you can use disks with mixed speeds in the same aggregate

Whenever possible, you should use disks of the same speed in an aggregate. However, if needed, you can configure Data ONTAP to allow mixed speed aggregates based on the disk type.

To configure Data ONTAP to allow mixed speed aggregates, you use the following options:

raid.rpm.fcal.enable
raid.rpm.ata.enable

When these options are set to off, Data ONTAP allows mixing speeds for the designated disk type.

By default, raid.rpm.fcal.enable is set to on, and raid.rpm.ata.enable is set to off.

Note: Even if Data ONTAP is not configured to allow mixing speeds, you can still add disks with different speeds to an aggregate using the -f option of the aggr create or aggr add commands.

Parent topic: How aggregates work

Related concepts

How unmirrored aggregates work

How mirrored aggregates work

Aggregate states and status

How to control disk selection in a heterogeneous disk pool

Checksum type rules used when you add disks to an aggregate

Disk speeds

Related tasks

Increasing the size of an aggregate

Creating an aggregate