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Multiple fans has failed. Chassis temperature is too high

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fas-systems
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hw
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Applies to

  • FAS2720
  • ONTAP 9.5P16
  • BMC

Issue

  • The EMS-LOG-FILE section of AutoSupport:
[Node-01: monitor: monitor.globalStatus.critical:EMERGENCY]: Multiple fans has failed. Chassis temperature is too high.
[Node-01: env_mgr: monitor.fan.warning:notice]: multiple fans have failed. Replace it to avoid overheating
[Node-01: env_mgr: monitor.temp.unreadable:error]: The controller temperature (Module B Expander Temp) is not readable.
...
[Node-01: env_mgr: monitor.temp.unreadable:error]: The controller temperature (Midplane 4 Temp) is not readable.
[Node-01: env_mgr: monitor.temp.unreadable:error]: The controller temperature (Midplane 3 Temp) is not readable.
...
[Node-01: env_mgr: monitor.temp.unreadable:error]: The controller temperature (Ambient Temp) is not readable.
[Node-01: monitor: monitor.globalStatus.critical:EMERGENCY]: Multiple fans has failed. Chassis temperature is too high.
[Node-01: env_mgr: callhome.c.fan.fru.fault:error]: Call home for CHASSIS FAN FRU FAILED: Multiple fans have failed
  • The latest version of BMC Firmware does not clear the alert
  • The IFSTAT-A section of the AutoSupport for interface e0M has high Transmit values

(Or use Cluster::*> system node run -node Node-01 -command ifstat e0M)

-- interface  e0M  (292 days, 7 hours, 50 minutes, 35 seconds) --

TRANSMIT
Total frames:      322g | Frames/second:   12785  | Total bytes:      1386t
Bytes/second:    54899k | Total errors:        0  | Errors/minute:       0
...
TSO segments:      321g | TSO bytes:        1340t | TSO6 segments:       0
TSO6 bytes:          0  | HW UDP cksums:   53871  | HW UDP6 cksums:      0
HW TCP cksums:     322g | HW TCP6 cksums:      0  | Mcast v6 solicit:    0
  • The system is used for Network Data Management Protocol (NDMP) based backup
  • The NDMP section of the AutoSupport provides the IP-addresses used for NDMP

[kern_ndmpd:info:5238] [93154]  DEBUG: NDMP Connect: Successfully connected to [10.xx.x.xxx].39441, using local address [10.xx.x.x].24858
[kern_ndmpd:info:5238] [93159]  DEBUG: NDMP Connect: Successfully connected to [10.xx.x.xxx].39487, using local address [10.xx.x.x].49987
[kern_ndmpd:info:5238] [93165]  DEBUG: NDMP Connect: Successfully connected to [10.xx.x.xxx].39545, using local address [10.xx.x.x].28630 (+0:00:01)
[kern_ndmpd:info:5238] [93170]  DEBUG: NDMP Connect: Successfully connected to [10.xx.x.xxx].39591, using local address [10.xx.x.x].17084

  • The NETSAT-NRGD section of the AutoSupport present the routing tables:

---- Default IPSpace ----
Routing tables

Internet:
Destination        Gateway            Flags    Refs      Use    Mtu Metric      Netif Expire
default            xx.xx.x.xxx        UGS         0    53480   1500    110    a0a-704 =>          xx.xx.x.x
default            xx.xx.x.xxx        UGS         0    78163   1500     65        e0M => xx.xx.x.xxx
default            xx.xx.x.xxx        UGS         0   202969   1500     65        e0M     xx.xx.x.xxx
10.0.0.205         xx.xx.x.xxx        UGHS        0   133280   1500    110    a0a-704         xx.xx.x.x
10.0.0.206         xx.xx.x.xxx        UGHS        0   133280   1500    110    a0a-704         xx.xx.x.x
10.52.2.0/23       link#1             U           4 28857602472   1500     60        e0M =>        xx.xx.x.xxx

  • Traffic is directed to interface e0M with the same subnet

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