1つのDIMMの障害が原因で複数のDIMMが無効になり、ONTAPが少ないメモリでブート

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環境

AFF A1K、AFF A90、AFF A70、AFF C80、AFX 1K
ASA A1K、ASA A90、ASA A70
FAS90、FAS70
AFF A900、ASA A900
FAS9500
platform.reducedMemory イベント

問題

"BootDimmDisableAlert"がsystem health alert showの複数のDIMMに対して報告されました

Node: node-01 Alert ID: BootDimmDisableAlert Resource: DIMM-10 Severity: Major Indication Time: XXX XXX XX XX:XX:XX XXXX Suppress: false Acknowledge: false Probable Cause: "DIMM-10" has been disabled to preserve memory interleaving. The system has booted with less memory. Possible Effect: System memory has been reduced, which can impact performance of the node. Corrective Actions: Repair failed or mapped-out DIMMs in the system. Then, reset the system to re-enable disabled DIMMs.

ECC エラー、その他の POST メモリエラーおよびplatform.reducedMemoryイベントは、シリアルコンソールログで確認できます。

login: ECC error at DIMM-23: 2204-0278F989,ADDR 0x6296b70340,(Node(0), memory controller(3), CH(6), DIMM(0), Rank(1), Bank Group(2), Bank(0x3), Row(0x1885e), Col(0x208)) Uncorrectable Machine Check Error at CPU29. ICL_IMC3_C0 Error: STATUS<0xbe00ffc2001000c0>(VALID,UC,EN,MISCV,ADDRV,PCC,CORR_ERR_STAT(0),CORR_ERR_CNT(0x3ff),OTHER_INFO(0x2),MSCOD(0x10),MCACOD(0xc0)),MISC<0x09000e0c42f10486>(EXTRA_ERR_INFO(0x4800706217882),ADDR_MODE(0x2),REC_ERR_LSB(0x6)),ADDR<0x0000006296b70340>(ADDRESS(0x6296b70340))Node(0), Memory controller(3), CH(0), DIMM(0), Rank(1), Bank Group(2), Bank(0x3), Row(0x1885e), Col(0x208),

MEMORY WARNING: Major Code 0x30 Minor Code 0x2D Dimm 23 MEMORY WARNING: Major Code 0x30 Minor Code 0x2D Dimm 23 MEMORY WARNING: Major Code 0x30 Minor Code 0x2D Dimm 23 MEMORY WARNING: Major Code 0x30 Minor Code 0x2D Dimm 23 MEMORY WARNING: Major Code 0x30 Minor Code 0x2D Dimm 23 MEMORY WARNING: Major Code 0x30 Minor Code 0x2D Dimm 23 MEMORY WARNING: Major Code 0x30 Minor Code 0x2D Dimm 23 MEMORY WARNING: Major Code 0x30 Minor Code 0x2D Dimm 23 MEMORY WARNING: Major Code 0x30 Minor Code 0x2D Dimm 23 DIMM:23 mapped out. BIOS MRC mapped out DIMM. Major / Minor Error Code: 0x0B / 0x1C Complete channel mapped out. Or DIMM:23 mapped out. BIOS MRC mapped out DIMM. Major / Minor Error Code: 0x30 / 0x2D Complete channel mapped out.

DIMM in slot 3 is disabled DIMM in slot 7 is disabled DIMM in slot 10 is disabled DIMM in slot 14 is disabled DIMM in slot 19 is disabled DIMM in slot 23 failed DIMM in slot 26 is disabled DIMM in slot 30 is disabled Jan 23 23:58:06 [node-01:platform.reducedMemory:ALERT]: System memory (511 GB) is less than expected (1024 GB). Check DIMMs slots 3, 7, 10, 14, 19, 23, 26, 30.

ASUPのDIMM-INFO.XML logでは、出力は以下のようになります

例（AFF-C80）：
2 DIMM-2 0 2 0 Samsung-13ABFD3C M321R4GA3BB6-CQKET 0 0 controller unknown DIMM-2 DIMM-2 bucket false disabled
4 DIMM-4 0 0 0 Samsung-13ABD70D M321R4GA3BB6-CQKET 0 0 controller ok DIMM-4 DIMM-4 bucket false none
5 DIMM-5 0 4 0 Samsung-13AC01D4 M321R4GA3BB6-CQKET 0 0 controller unknown DIMM-5 DIMM-5 bucket false disabled
7 DIMM-7 0 6 0 Samsung-13ABFD3D M321R4GA3BB6-CQKET 0 0 controller ok DIMM-7 DIMM-7 bucket false none
10 DIMM-10 1 2 0 Samsung-13AC0269 M321R4GA3BB6-CQKET 0 0 controller unknown DIMM-10 DIMM-10 bucket false fault
12 DIMM-12 1 0 0 Samsung-13AC0232 M321R4GA3BB6-CQKET 0 0 controller ok DIMM-12 DIMM-12 bucket false none
13 DIMM-13 1 4 0 Samsung-13ABF48B M321R4GA3BB6-CQKET 0 0 controller unknown DIMM-13 DIMM-13 bucket false disabled
15 DIMM-15 1 6 0 Samsung-13ABFCBA M321R4GA3BB6-CQKET 0 0 controller ok DIMM-15 DIMM-15 bucket false none