Cause of Read Errors across nearly all disks?


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I am running into serious issues as outlined here... and I think I may have gotten to the bottom of it:

 

After about the 4th round of trying to Parity Check I noticed nearly ALL of my drives have massive and increasing numbers for the following. I found it very odd that I was getting these errors across all sata controllers:

  • Raw read error rate

  • Seek error rate

  • Hardware ECC recovered

 

However there are no errors in the syslog or anything that would indicate an issue as far as I know.

Were there actually errors but suppressed due to the P+Q sync corrections?

What can cause the 3 bullets above and what should I try to do to fix? Or is this normal?

 

EDIT: Upon closer inspection all but one of the disks are attached to my Intel RES2SV240NC RAID Expander Card + LSI LSI00301 (9207-8i)

 

Edited by johnsanc
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7 hours ago, johnsanc said:

After about the 4th round of trying to Parity Check I noticed nearly ALL of my drives have massive and increasing numbers for the following. I found it very odd that I was getting these errors across all sata controllers:

  • Raw read error rate

  • Seek error rate

  • Hardware ECC recovered

What brand of disks? Seagates for example show the actual total values, not just the errors, so any activity will increase them.

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