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Disk shelf DS460C is reporting intermittent UNDER-TEMPERATURE (UT) alerts

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Category:
fas-systems
Specialty:
HW
Last Updated:

Applies to

  • DS460C Shelves
  • ONTAP 9

Issue

  • DS460C shelf reporting undertemperature failure alerts similar to the following
[node-n01: dsa_worker5: ses.status.temperatureError:error]: DS460-12 (S/N XXXX) shelf 21 on channel 0b temperature error for Temperature sensor 1: critical status; undertemperature failure. Current temperature: -2 C (28 F). This module is on the front of the shelf on the left, on the OPS panel.
[node-n01: statd: monitor.shelf.fault:alert]: Critical fault reported on disk storage shelf attached to channel 0b. Check fans, power supplies, disks, and temperature sensors.
[node-n01: statd: callhome.shlf.fault:error]: Call home for SHELF_FAULT
  • Shelf fault clears after random amount of time 
  • Confirmed no site temperature issues 
  • Shelf logs show constant I2C errors from the shelf IOMs

    EXAMPLE: 
Mon May  1 22:22:22 2024 (  452+09:23:07.194); 0600002A; M0; HAL; hal; 04; HAL_I2CTgt_Write: bus[1] addr:94 err:5 cerr:5
Mon May  1 22:22:22 2024 (  452+09:23:07.203); 0600002A; M0; HAL; hal; 04; HAL_I2CTgt_Write: bus[1] addr:94 err:5 cerr:1
Mon May  1 22:22:22 2024 (  452+09:23:07.203); 0600002A; M0; HAL; hal; 04; HAL_I2CTgt_Write: bus[1] addr:94 err:5 cerr:2
Mon May  1 22:22:22 2024 (  452+09:23:07.204); 0600002A; M0; HAL; hal; 04; HAL_I2CTgt_Write: bus[1] addr:94 err:5 cerr:3
Mon May  1 22:22:22 2024 (  452+09:23:07.204); 0600002A; M0; HAL; hal; 04; HAL_I2CTgt_Write: bus[1] addr:94 err:5 cerr:4
Mon May  1 22:22:22 2024 (  452+09:23:07.204); 0600002A; M0; HAL; hal; 04; HAL_I2CTgt_Write: bus[1] addr:94 err:5 cerr:5
Mon May  1 22:22:22 2024 (  452+09:23:08.273); 0600002B; M0; HAL; hal; 04; HAL_I2CTgt_Read: bus[1] addr:94 err:5 cerr:1 stuckErr:0
Mon May  1 22:22:22 2024 (  452+09:23:08.274); 0600002B; M0; HAL; hal; 04; HAL_I2CTgt_Read: bus[1] addr:94 err:5 cerr:2 stuckErr:0
Mon May  1 22:22:22 2024 (  452+09:23:08.274); 0600002B; M0; HAL; hal; 04; HAL_I2CTgt_Read: bus[1] addr:94 err:5 cerr:3 stuckErr:0
Mon May  1 22:22:22 2024 (  452+09:23:08.274); 0600002B; M0; HAL; hal; 04; HAL_I2CTgt_Read: bus[1] addr:94 err:5 cerr:4 stuckErr:0
 
 

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