PSUからDC FAIL、AC FAIL、Offが報告される

環境

• AFFおよびFASシステム
• ONTAP 9
• 電源装置ユニット（PSU）

問題

• EMS から次のエラーメッセージが報告されます。

[Node-A: statd: monitor.shelf.fault:alert]: Critical fault reported on disk storage shelf attached to channel 0a. Check fans, power supplies, disks, and temperature sensors.
[Node-A: statd: callhome.shlf.fault:error]: Call home for SHELF_FAULT
[Node-A: dsa_worker4: ses.status.psError:alert]: DS212-12 (S/N SHFNCXXXXXXXXXX) shelf 0 on channel 0b power error for Power supply 2: critical status; AC Fail. This module is on the rear of the shelf at the bottom right.
[Node-A: dsa_worker4: callhome.shlf.power.intr:error]: Call home for SHELF POWER INTERRUPTED

• storage show fault に、PSUがCRITICAL であることを示します。

Power Supplies:
Element Status      Status Bytes  Status Descriptions
  1: CRITICAL      02,00,00,F1  DC FAIL, OFF, RQSTED ON, FAIL
  2: OK         01,00,00,20   RQSTED ON

または

Element Status         Status Bytes  Status Descriptions
  1: CRITICAL          02,00,00,F3   DC FAIL, AC FAIL, OFF, RQSTED ON, FAIL
  2: OK                01,00,00,20   RQSTED ON
 
Fans:
Element Status      Status Bytes  Status Descriptions
  1: CRITICAL      02,00,00,F0   OFF, FAIL
  2: CRITICAL      02,00,00,F0   OFF, FAIL
  3: OK         01,01,2C,21
  4: OK         01,01,29,21

Enclosure:
Element Status      Status Bytes  Status Descriptions
  1: OK         01,00,02,00   FAIL

Voltage Sensors:
Element Status      Status Bytes  Status Descriptions
  1: UNRECOVERABLE    04,00,00,00
  2: UNRECOVERABLE    04,00,00,00
  3: OK         01,00,01,FB
  4: OK         01,00,04,C6

• 該当するPSUのLEDがオレンジに点灯します。