RTC バッテリの障害です

環境

• FAS / AFF プラットフォーム
• リアルタイムクロック（RTC）コイン型バッテリ

問題

• ノードとシャーシの障害 LED が点灯し、障害を明確に示すことはありません
• または、次の EMS メッセージが生成され、バッテリに対して重大でない障害が報告されます。

Tue Sep 4 15:05:29 CEST [NODE1:monitor.chassisPower.degraded:warning]: Chassis power is degraded: RTC Battery is in WARN LOW state current voltage is 2774 mV, normal low is 2800 mV

• SP-LATEST-IPMI LOG show P3.3V Batt is []warnlow

P3.3V Batt   warnlow  2660 mV    2537 mV    2695 mV    3307 mV    3447 mV   

• SP-LATEST-SYSLOG ログの表示 [rtcWarnLowPower]

BMC env_mgr[1534]: Payload EMS: EMS_monitor_rtcWarnLowPower(2660 mV) 

• BMC events allP3.3V Batt is critical lowが表示されます。

BMC env_mgr[1461]: P3.3V Batt is critical low

• BMC / SP では、次の重大でない状態が表示されます。

Sensor Name | Current | Unit | Status | LCR | LNC | UNC | UCR -----------------+------------+------------+------------+-----------+-----------+-----------+----------- PCM_Status | 0x0 | discrete | Power Good | na | na | na | na Attn_Sensor1 | 0x0 | discrete | Asserted | na | na | na | na CPU-1_DTS_Temp | -54.000 | degrees C | ok | na | na | -10.000 | 0.000 CPU-2_DTS_Temp | -57.000 | degrees C | ok | na | na | -10.000 | 0.000 CPU0_PVCCP | 1.750 | Volts | ok | 1.580 | 1.670 | 1.920 | 2.010 CPU1_PVCCP | 1.750 | Volts | ok | 1.580 | 1.670 | 1.920 | 2.010 DDR4_PVDDQ_AB | 1.230 | Volts | ok | 1.050 | 1.110 | 1.280 | 1.340 DDR4_PVDDQ_CD | 1.220 | Volts | ok | 1.050 | 1.110 | 1.280 | 1.340 DDR4_PVDDQ_EF | 1.220 | Volts | ok | 1.050 | 1.110 | 1.280 | 1.340 DDR4_PVDDQ_GH | 1.220 | Volts | ok | 1.050 | 1.110 | 1.280 | 1.340 DDR4_PVPP_AB | 2.640 | Volts | ok | 2.300 | 2.440 | 2.800 | 2.940 DDR4_PVPP_CD | 2.600 | Volts | ok | 2.300 | 2.440 | 2.800 | 2.940 DDR4_PVPP_EF | 2.600 | Volts | ok | 2.300 | 2.440 | 2.800 | 2.940 DDR4_PVPP_GH | 2.600 | Volts | ok | 2.300 | 2.440 | 2.800 | 2.940 DDR4_PVTT_AB | 0.610 | Volts | ok | 0.520 | 0.550 | 0.640 | 0.670 DDR4_PVTT_CD | 0.610 | Volts | ok | 0.520 | 0.550 | 0.640 | 0.670 DDR4_PVTT_EF | 0.610 | Volts | ok | 0.520 | 0.550 | 0.640 | 0.670 DDR4_PVTT_GH | 0.610 | Volts | ok | 0.520 | 0.550 | 0.640 | 0.670 DIMM-1-4_Temp | 26.000 | degrees C | ok | 0.000 | 5.000 | 80.000 | 85.000 DIMM-13-16_Temp | 26.000 | degrees C | ok | 0.000 | 5.000 | 80.000 | 85.000 DIMM-5-8_Temp | 26.000 | degrees C | ok | 0.000 | 5.000 | 80.000 | 85.000 DIMM-9-12_Temp | 26.000 | degrees C | ok | 0.000 | 5.000 | 80.000 | 85.000 HotSwap_Current | 29.250 | Amps | ok | 0.000 | 2.000 | 55.000 | 60.000 HotSwap_VOUT | 11.940 | Volts | ok | 10.560 | 11.160 | 12.840 | 13.440 P0V9_SB | 0.900 | Volts | ok | 0.790 | 0.830 | 0.960 | 1.000 P1V2_SB | 1.200 | Volts | ok | 1.050 | 1.110 | 1.280 | 1.340 P1V8_SB | 1.800 | Volts | ok | 1.580 | 1.670 | 1.920 | 2.010 P2V5_SB | 2.500 | Volts | ok | 2.200 | 2.320 | 2.660 | 2.800 P3V3 | 3.280 | Volts | ok | 2.900 | 3.060 | 3.520 | 3.680 P3V3_SB | 3.280 | Volts | ok | 2.900 | 3.060 | 3.520 | 3.680 P3V3_SB_SQ | 3.300 | Volts | ok | 2.900 | 3.060 | 3.520 | 3.680 P3V_BATT | 2.840 | Volts | nc | 2.720 | 2.880 | 3.300 | 3.460