"EMS" shows shelf fault: [node01: dsa_worker3: ses.status.ACPError:alert]: DS212-12 (S/N XXXXXXX) shelf 4 on channel 0b ACP Processor error for SAS shelf ACP processor 1: critical status ; Alternate C..."EMS" shows shelf fault: [node01: dsa_worker3: ses.status.ACPError:alert]: DS212-12 (S/N XXXXXXX) shelf 4 on channel 0b ACP Processor error for SAS shelf ACP processor 1: critical status ; Alternate Control Path hardware failed This module is on the rear of the shelf at the top left, on shelf module A. [node01: monitor: monitor.globalStatus.critical:EMERGENCY]: Disk shelf fault. [node01: statd: monitor.shelf.fault:alert]: Critical fault reported on disk storage shelf attached to channel 0a.