The restrictions and requirements for mirrored HA pairs include those for a standard HA pair with these additional requirements for disk pool assignments and cabling.
- You must ensure that your pools are configured correctly:
- Disks or array LUNs in the same plex must be from the same pool, with those in the opposite plex from the opposite pool.
- There must be sufficient spares in each pool to account for a disk or array LUN failure.
- Both plexes of a mirror should not reside on the same disk shelf because it might result in a single point of failure.
- The storage failover command's -mode option must be set to ha.
- If you are using array LUNs, paths to an array LUN must be redundant.