we have a metrocluster which seems to be setup normally. Aggr0 is mirrored between the filers, and has only one raidgroup on each head. The original reason for creating a metrocluster is not valid anymore since the two heads are only a few meter away from each other. The filers are almost end of life, and almost out of diskspace. For budget reasons, we've decided to not buy anymore disks/shelves, but instead break the current aggregate mirrors so we free up the disks holding the copies.
Looking for the correct way to do this, I found two methods: