When you add array LUNs to a mirrored aggregate, you need to ensure that the number and size of the array LUNs in the two plexes remains identical.
Keep the following rules in mind when adding array LUNs to a mirrored aggregate:
- You must add an even number of array LUNs to the mirrored aggregate.
- You must divide the array LUNs you add equally between the two plexes.
- The array LUNs for each plex must come from a different LUN set. Do not mix the LUNs from the two LUN sets in the same plex.
- All array LUNs in the mirrored aggregate must be the same checksum type.