ネットワーク接続が原因で非同期ミラーグループがデグレードとマークされました

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環境

E2800
E5700
非同期ミラーリング
アレイ間の通信： iSCSI

問題

Recovery Guru のレポート：

Failure Entry 1: ARVM_DEGRADED_MIRROR_GROUP-Recovery Failure Type Code: 412

Storage array: primary_array

Remote storage array: NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Asynchronous mirror group: AMG_001

Status: Degraded

Recovery point warning threshold: 4 hours (240 minutes)

ストレージプロファイルのミラーグループがデグレード状態になりました：

Name Status Role Remote Storage Array Associated Mirrored Pairs Last Known Recovery Point

AMG_001 Degraded Primary NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 1 1/22/21, 12:34:56 PM UTC

メジャーイベントログレポート：

Date/Time: 1/23/21, 12:34:33 PM

Sequence number: 1134

Event type: 7C00

Event category: Internal

Priority: Warning

Event needs attention: true

Event send alert: true

Event visibility: true

Description: An asynchronous mirror group was marked degraded

Event specific codes: 0/0/0

Component type: Asynchronous Mirror Group

Component location: Asynchronous Mirror Group AMG_001

Logged by: Controller in bay B

Date/Time: 1/23/21, 12:34:45 PM
 Sequence number: 1137
 Event type: 7C01
 Event category: Internal
 Priority: Warning
 Event needs attention: true
 Event send alert: true
 Event visibility: true
 Description: An asynchronous mirror group synchronization interval threshold has been exceeded
 Event specific codes: 0/0/0
 Component type: Asynchronous Mirror Group
 Component location: Asynchronous Mirror Group AMG_001
 Logged by: Controller in bay A

Date/Time: 1/23/21, 17:34:43 PM

Sequence number: 1175

Event type: 1818

Event category: Internal

Priority: Informational

Event needs attention: false

Event send alert: false

Event visibility: true

Description: iSCSI communication lost to remote target

Event specific codes: 0/0/0

Component type: Initiator

Component location: 1-22.com.aaaa:bbbb.NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Logged by: Controller in bay A

Date/Time: 1/23/21, 17:34:43 PM

Sequence number: 1176

Event type: 1817

Event category: Internal

Priority: Informational

Event needs attention: false

Event send alert: false

Event visibility: true

Description: iSCSI communication has been established

Event specific codes: 0/0/0

Component type: Initiator

Component location: 1-22.com.aaaa:bbbb.NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Logged by: Controller in bay A

Date/Time: 1/23/21, 17:34:45 PM

Sequence number: 1177

Event type: 6503

Event category: Failure

Priority: Critical

Event needs attention: true

Event send alert: true

Event visibility: true

Description: Communication to remote volume down

Event specific codes: 0/0/0

Component type: Volume

Component location: Volume Primary_Vol1

Logged by: Controller in bay A