PCM障害によるAFF-C250ノードのダウン

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環境

NetApp AFF-C250 システム
ONTAP 9.17.1P2

問題

クラスター内の1つのノード（Node1）が応答しなくなり、パートナーノード（Node2）に引き継がれました。
影響を受けるノード Service Processor fw：15.13、最新のfwバージョンです。
Node 01 bmcイベントログに多くのBus Correctable errorがあります：

8a8 | 11/26/2025 | 21:40:32 | Critical Interrupt #0x31 | Bus Correctable error | Asserted
8a9 | 11/26/2025 | 21:40:32 | Critical Interrupt #0x31 | Bus Correctable error | Asserted

91e | 12/17/2025 | 00:06:49 | System Event | Timestamp Clock Sync | Asserted
91f | 12/17/2025 | 00:06:49 | Battery Bat_Power_Fault | State Deasserted
920 | 12/17/2025 | 00:06:49 | Battery Bat_Dsg_FET_Flt | State Asserted
921 | 12/17/2025 | 00:06:49 | Battery Bat_Chg_FET_Flt | State Asserted
922 | 12/17/2025 | 00:06:49 | Battery Bat_Pack_Invalid | State Deasserted
923 | 12/17/2025 | 00:06:49 | Other FRU FRU Presence |
924 | 12/17/2025 | 00:06:49 | Other FRU FRU Presence |
925 | 12/17/2025 | 00:06:49 | Other FRU FRU Presence |
926 | 12/17/2025 | 00:06:49 | Other FRU FRU Presence |
927 | 12/17/2025 | 00:07:05 | OEM record df | FPGA pull BMC whole reset
928 | 12/17/2025 | 00:07:06 | OEM record df | Pilot AC cycle
929 | 12/17/2025 | 00:07:08 | Power Supply PSU1_status | Presence detected | Asserted
92a | 12/17/2025 | 00:07:09 | Power Supply PSU2_status | Presence detected | Asserted
92b | 12/17/2025 | 00:07:09 | Power Supply PSU1_VIN_TYPE | Presence detected | Asserted
92c | 12/17/2025 | 00:07:09 | Power Supply PSU2_VIN_TYPE | Presence detected | Asserted
92d | 12/17/2025 | 00:07:11 | Battery Bat_Power_Fault | State Deasserted
92e | 12/17/2025 | 00:07:11 | Battery Bat_Dsg_FET_Flt | State Asserted
92f | 12/17/2025 | 00:07:11 | Battery Bat_Chg_FET_Flt | State Asserted
930 | 12/17/2025 | 00:07:11 | Battery Bat_Pack_Invalid | State Deasserted
931 | 12/17/2025 | 00:07:11 | Battery Bat_Lrn_Active | State Deasserted
932 | 12/17/2025 | 00:07:11 | Other FRU FRU Presence |
933 | 12/17/2025 | 00:07:11 | Other FRU FRU Presence |
934 | 12/17/2025 | 00:07:11 | Other FRU FRU Presence |
935 | 12/17/2025 | 00:07:11 | Other FRU FRU Presence |
936 | 12/17/2025 | 00:07:15 | OEM record c0 | 000000 | 000105000000
937 | 12/17/2025 | 00:07:23 | Critical Interrupt #0x31 | Bus Correctable error | Asserted
938 | 12/17/2025 | 00:07:23 | Critical Interrupt #0x31 | Bus Correctable error | Asserted
939 | 12/17/2025 | 00:07:23 | Critical Interrupt #0x31 | Bus Correctable error | Asserted
93a | 12/17/2025 | 00:07:23 | Critical Interrupt #0x31 | Bus Correctable error | Asserted