「chassis fan fru failed：Multiple fans have failed」というメッセージがシステムで表示される

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環境

ONTAP 9
FAS / AFF システム

問題

両方のノードのファンおよびPSUに関する複数のエラーがEMSで報告されています：-

Fri May 20 20:34:35 +1000 [hocnas-01: env_mgr: monitor.fan.warning:notice]: multiple fans have failed. Replace it to avoid overheating

Fri May 20 20:34:38 +1000 [hocnas-01: dsa_worker1: callhome.shlf.fan:EMERGENCY]: Call home for SHELF COOLING UNIT FAILED

Fri May 20 20:35:00 +1000 [hocnas-01: monitor: monitor.globalStatus.critical:EMERGENCY]: Multiple fans has failed. Disk shelf fault.

Fri May 20 20:35:33 +1000 [hocnas-01: env_mgr: callhome.c.fan.fru.fault:error]: Call home for CHASSIS FAN FRU FAILED: Multiple fans have failed

Fri May 20 20:41:01 +1000 [hocnas-01: env_mgr: monitor.fan.warning:notice]: multiple fans have failed. Replace it to avoid overheating

Fri May 20 20:41:31 +1000 [hocnas-01: env_mgr: monitor.fan.ok:notice]: All fans are OK.

Fri May 20 20:44:11 +1000 [hocnas-01: cphmd: hm.alert.raised:alert]: Alert Id = CriticalFruMultiFaultAlert , Alerting Resource = PSQ094174100430 raised by monitor chassis

Fri May 20 20:44:11 +1000 [hocnas-01: cphmd: hm.alert.raised:alert]: Alert Id = CriticalFruMultiFaultAlert , Alerting Resource = PSQ094174101084 raised by monitor chassis

Sat May 21 15:00:00 +1000 [hocnas-02: statd: monitor.shelf.fault:alert]: Critical fault reported on disk storage shelf attached to channel 0a. Check fans, power supplies, disks, and temperature sensors.

Sat May 21 15:00:00 +1000 [hocnas-02: statd: monitor.fan.failed:alert]: Multiple fans has failed.

Sat May 21 15:41:42 +1000 [hocnas-02: env_mgr: monitor.fan.warning:notice]: multiple fans have failed. Replace it to avoid overheating

Sat May 21 15:42:12 +1000 [hocnas-02: env_mgr: callhome.c.fan.fru.fault:error]: Call home for CHASSIS FAN FRU FAILED: Multiple fans have failed

Sat May 21 15:47:44 +1000 [hocnas-02: dsa_worker1: callhome.shlf.fan:EMERGENCY]: Call home for SHELF COOLING UNIT FAILED

ノード2のSPがPSU/が存在しないと報告していました：

Sensor Name    | Current   | Unit     | Status    | LCR     | LNC     | UNC     | UCR
  ----------------- ------------ ------------ ------------ ----------- ----------- ----------- -----------
  PSU1_Present    | 0x0     | discrete   | Absent   | na     | na     | na     | na
  PSU1_Fault     | na      | discrete   | na      | na     | na     | na     | na
  PSU2_Present    | 0x0     | discrete   | Absent   | na     | na     | na     | na
  PSU2_Fault     | na      | discrete   | na      | na     | na     | na     | na