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Disc Read Errors - Advice Needed

Featured Replies

Hello Community,

 

I have read errors on one of my disks.  I have attached the SMART report (ran the short version) which shows no errors.  Also attached the system log that does show the disk error. 

 

1.  Should I be concerned?

2.  Actions to take?

 

I am somewhat challenged to put my hands on my server, as I am in the USA and my server is in my house in China (yes, I am a Covid refugee).  I am accessing my server using Zero Tier.

 

Thanks for the advice.

 

SH

 

image.png.f647872265ea6c63bad979a40a386526.png

hal-9000-smart-20200330-2223.zip hal-9000-syslog-20200330-1435.zip

  • Community Expert

Next time please post the complete diagnostics, it includes the syslog, SMART reports as well as other useful info.

 

Iit's logged like an actual disk problem, but these can be intermittent, you should run an extend SMART test.

  • Community Expert

No extended test logged, only a short test.

  • Community Expert

It passed so disk is OK for now, keep monitoring.

  • 2 months later...

Im having a similar issue at the moment. I had some power outages in my house this week and found out my UPS battery had kicked the bucket so the PC would go down. When started, it would automatically go into parity check. last one completed and found/corrected 6k+ errors.
But since yesterday, it started doing a Parity sync again and within a few hours, one of my array drives will "unmount" and i get a "Disc1 has read errors" and they continue to increase in count as the sync goes on.

Today I stopped the sync, stopped the array (as soon as i do that, the disc returns to normal) and started it in maintenance mode. Currently running a extended smart test on the drive as a short one passed but some of the posts Ive read thru suggest to do an extended one.
What should I look into or do next. Ahead of time, Im fairly new to Unraid. As soon as the test completes, I'll post the results

  • Author

I have a disk with UDMA CRC error count warning.  Have run a SMART test which passed.  Should I be concerned or just monitor? 

 

Thanks in advance.

 

SH.

image.png

hal-9000-smart-20200608-1145.zip

  • Community Expert
1 hour ago, Kaos809 said:

As soon as the test completes, I'll post the results

Please do but start a new topic, and make sure you also post the diagnostics, ideally before rebooting.

  • Community Expert

The CRC errors are connection issues and typically relate to power/SATA cabling.    The never reset so you just want them to stop increasing  (or increasing very slowly).

  • Community Expert
23 minutes ago, ShangHangin said:

I have a disk with UDMA CRC error count warning.


CRC errors are a connection problem, most times the SATA cable, but it can also be the controller, backplane, etc, start by replacing the SATA cable, and note that the attribute doesn't reset, so as long as it doesn't keep increasing the problem is solved.

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