Power Sources

The Sun StorEdge A3x00 or Sun StorEdge A1000 disk expansion unit includes redundant power sequencers. Each power sequencer supplies power to half of the expansion unit's components, so power loss to one of these power sources does not affect system availability. The controller module has redundant power supplies, so a single power failure in the controller module also will not affect system availability.

There are no special procedures required by Sun Cluster to recover in the event of a failure of the entire disk expansion unit. Follow the procedures in the disk expansion service manual to bring them back into service.