The AutoSupport message SYNCMIRROR PLEX FAILED indicates that a plex of a SyncMirror has failed and the SyncMirror relationship is in a degraded state. Errors: Failed to validate the node and cluster ...The AutoSupport message SYNCMIRROR PLEX FAILED indicates that a plex of a SyncMirror has failed and the SyncMirror relationship is in a degraded state. Errors: Failed to validate the node and cluster components before the switchover operation. Fri Dec 22 20:12:57 -0500 [nodename: scsi.mcc.adt.ioTransportError: mcc_adt[0] - Transport error during execution of command: HA status 0x13: CAM transport status 0x1b : cdb 0x1c.