SAS ケーブルの不良によりSAS portがダウン

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環境

ONTAP 9
FAS9500
System Storage Configuration は Quad-Path HA から Multi-Path HA に劣化しました

問題

SYSCONFIG -A SASポートダウンを報告：

slot 2: SAS Host Adapter 2c (PMC-Sierra PM8072 rev. C, SAS, <OFFLINE (hard)>)

EMSreports DISK REDUNDANCY FAILED エラー：

[node01: pmcsas_admin_0: sas.port.down:debug]: SAS port "2c" went down. [node01: pmcsas_admin_0: sas.cable.pulled:debug]: Cable attached to SAS port "2c" was pulled out. [node01: svc_queue_thread: shelf.config.tompha:info]: System has transitioned to multi-path HA attached storage [node01: svc_queue_thread: callhome.dsk.redun.fault:error]: Call home for DISK REDUNDANCY FAILED

ENVIRONMENT report external shelf still able to read sas cable information：

Channel: 11b Shelf: 50 SAS cable information by element: [1] Vendor: Amphenol Type: MINI-SAS HD passive copper 5m ID: 00 Swaps: 0 Serial number: xxxxxxxxxx Part number: 112-00439+A0

SAS-EXPANDER-MAP には、影響を受けるSASポートの Status Not Available が表示され、シェルフは表示されません：

Expanders on channel 5a:
Cannot Complete operation on channel 5a; Status Not Available.