If one drive fails in a RAID 5 configuration, the volume still operates - but in a degraded state (it no longer writes parity information). The important data should be backed up immediately and verified to be usable before any rebuild operation is started.
We tried to rebuild on our own risk by replaced failed HDD to new HDD, unfortunately we doesn't take the backup. While we rebuild it , rebuild process completed and restarted. However, it stopped with the same error message 'boot error Can you please share the backup procedure.
Praveen.Singh
3 Apprentice
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March 12th, 2023 23:00
If one drive fails in a RAID 5 configuration, the volume still operates - but in a degraded state (it no longer writes parity information). The important data should be backed up immediately and verified to be usable before any rebuild operation is started.
Praveen.Singh
3 Apprentice
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483 Posts
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March 12th, 2023 23:00
Login into the RAID bois From POST screen and share the SS, yes it can be recovered.
The nice explanation was here at IBM:-
https://www.ibm.com/docs/en/power9/0009-ESS?topic=recovery-recovering-raid-5-single-disk-failure
Divya2910
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3 Posts
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March 13th, 2023 03:00
We tried to rebuild on our own risk by replaced failed HDD to new HDD, unfortunately we doesn't take the backup.
While we rebuild it , rebuild process completed and restarted. However, it stopped with the same error message 'boot error
Can you please share the backup procedure.