12.2.1 Repairing a Lost Sun StorEdge MultiPack or Sun StorEdge D1000 Connection

When a connection from a disk enclosure to one of the cluster nodes fails, the failure is probably due to a bad SCSI-2 cable or an SBus card.

In any event, the node on which the failure occurred will begin generating errors when the failure is discovered. Later accesses to the disk enclosure will generate additional errors. The node will exhibit the same behavior as though power had been lost to the disk enclosure.

I/O operations from the other nodes in the cluster are unaffected by this type of failure.

To diagnose the failure, use the procedures for testing the card module in the service manual for your Sun Cluster node to determine which component failed. You should free up one node and the disk enclosure that appears to be down, for hardware debugging.