Unraid Cache disk SMART health [199] Error

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Hi All,

I recently got the error shown below:

 

Unraid Cache disk SMART health [199]: 28-02-2021 15:49
Warning [BORG] - udma crc error count is 4
ZA960NM10001_HKR02YPZ (sdh)

 

On a scale from 1 to 10 how serious is it?  Does this error mean I am losing data?  I recently migrated a bunch of data from 4 MyBook external drives over to my Share Drives. Each MyBook is 8TB in size for a total of 32TB.  The error mentions "Cache Disk" which I find strange because I have not yet put a single byte of data on my Cache Disk. In short, this error was not appearing before I completed this 32TB data migration task. 

 

Does anybody in the community have any advice what I need to do to fix this error?  Any tips will be welcome. Thank you for your time.

 

 

 

 

[JorgeB]

UDMA CRC is a connection problem, usually the SATA cable, replace it, note that the attribute doesn't reset, but as long as it doesn't keep increasing problem is solved.

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Thank you for the post JorgeB.  Below is a new screen capture of what seems to be the same error. However, this time the count has now changed to "143".  The "ZA960NM10001_HKRO2YPZ" shown below is the identification number for my CACHE Disk.  And after checking my CACHE Disk I see that it is connected to my SuperMicro onboard SAS port using the Mini SAS (SFF-8643 Host) - 4X SATA cable shown in the Amazon link below:

 

https://www.amazon.com/CableCreation-Internal-Mini-SFF-8643-Host/dp/B01GPDBHDY/ref=sr_1_1?dchild=1&keywords=B01GPDBHDY&qid=1614654307&sr=8-1

 

Can anybody in the community please recommend a superior quality Mini 4X SATA cable I can buy to replace this one that seems to be giving me problems. I don't know much about these cables when it comes to quality so any advice will be greatly appreciated. 

 

Also if I change my Cache Disk connection so it connects to a different port on the motherboard, can such a change mess up my UnRaid OS? My concern is such a change is going to cause me UnRaid OS hard drive configuration problems.  Thank you for your time.

 

[JorgeB]

Please post the diagnostics: Tools -> Diagnostics, there could be another reason for the errors, like the LSI firmware.

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Thanks for the post JorgeB.  I swapped the problematic SATA connector with a spare SATA connector not being used. I then powered up my UnRaid machine and the error no longer shows up.  So it looks like I one of the SATA connectors in my Mini SAS SFF-8643 to 4X SATA cable became defective.

 

Can any body in the community please recommend a quality Mini SAS (SFF-8643 Host) - 4X SATA cable I can buy?  The one shown in the Amazon link below is what I am currently using and it looks like I need to replace it due to how one of the SATA connectors has already failed:

 

https://www.amazon.com/CableCreation-Internal-Mini-SFF-8643-Host/dp/B01GPDBHDY/ref=sr_1_1?dchild=1&keywords=B01GPDBHDY&qid=1614654307&sr=8-1

 

Thank you for your time.