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E-Series Volume group failure during controller replacement due to loss of drive path

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Applies to

E-Series Systems

Issue

  • Volume group failed during storage controller replacement
  • Amber light observed on drawers prior to replacement.
VOLUME GROUPS------------------------------

SUMMARY

   Total Volume Groups: 2
   Total Capacity: 214.448 TB Usable, 214.446 TB Used
   Total Free Capacity: 2.553 GB
   Status: 0 Optimal, 2 Non Optimal

   Name     Status     Usable Capacity     Used Capacity     Free Capacity     RAID Level     Drive/Media Type      Volumes     Secure Capable     DA Capable
   VG1      Failed     107.224 TB          107.222 TB        1.776 GB          6              SAS, Hard Disk Drive  1           No                 Yes
   VG2      Failed     107.224 TB          107.223 TB        795.527 MB        6
  • Few drawers went missing, drives show loss of redundancy or bypassed causing volume groups to fail.
     0,    3,      0     Loss of redundancy  7,325.351 GB  Hard Disk Drive  SAS             12 Gbps            HUS728T8TAL5204  NE01              DA
      0,    3,      1     Loss of redundancy  7,325.351 GB  Hard Disk Drive  SAS             12 Gbps            HUS728T8TAL5204  NE01              DA
      0,    3,      2     Loss of redundancy  7,325.351 GB  Hard Disk Drive  SAS             12 Gbps            HUS728T8TAL5204  NE01              DA
      0,    3,      3     Loss of redundancy  7,325.351 GB  Hard Disk Drive  SAS             12 Gbps            HUS728T8TAL5204  NE01              DA
      0,    3,      4     Loss of redundancy  7,325.351 GB  Hard Disk Drive  SAS             12 Gbps            HUS728T8TAL5204  NE01              DA
      0,    3,      5     Loss of redundancy  7,325.351 GB  Hard Disk Drive  SAS             12 Gbps            HUS728T8TAL5204  NE01              DA
      0,    3,      6     Loss of redundancy  7,325.351 GB  Hard Disk Drive  SAS             12 Gbps            HUS728T8TAL5204  NE01              DA
      0,    5,      0     By-passed
      0,    5,      1     By-passed
      0,    5,      2     By-passed
      0,    5,      3     By-passed
      0,    5,      4     By-passed
      0,    5,      5     By-passed
      0,    5,      6     By-passed
      0,    5,      7     By-passed
      0,    5,      8     By-passed
      0,    5,      9     By-passed
      0,    5,      10    By-passed
      0,    5,      11    By-passed

 Troubleshooting Steps:

Below steps can be performed one after another. Need to verify if the issue is resolved or not after each step:
  1. Verify SAS/ Shelf cables connected properly
  2. Reseat the controller which was replaced to re-establish connections
  3. Reseat affected drawers one after another
  4. Powercycle the storage array for clean power-up with all components in place.

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