January 20, 20242 yr My Unraid server is seeing an increased number of udma crc errors for one of the disks. Please see attached for reference. I've tried reseating the SATA cables yesterday per some suggestions on this forum and the error count is still increasing. I'm currently running an extended self test on all my drives and will report back with the results (hopefully in a day). In the interim, I've included the diagnostics file - hoping someone can help me out. Much appreciated in advance. titan-diagnostics-20240120-0208.zip
January 20, 20242 yr Author Sounds good - thanks @JorgeB, quick question - I have 4 other bays that are empty. If i move the disk to either of them, would it impact the drives contents, or screw up the mapping on unraid? I figured I'd test the drive under any one of those bays to rule out cabling.
January 20, 20242 yr Community Expert 32 minutes ago, VicePrez said: Sounds good - thanks @JorgeB, quick question - I have 4 other bays that are empty. If i move the disk to either of them, would it impact the drives contents, or screw up the mapping on unraid? I figured I'd test the drive under any one of those bays to rule out cabling. Unraid does not care where the drives are connected as long as they present their serial numbers (and size ) the same in both locations.
January 21, 20242 yr Author 9 hours ago, itimpi said: Unraid does not care where the drives are connected as long as they present their serial numbers (and size ) the same in both locations. Excellent; sounds good. Smart test is almost done, I'll have to do this in the morning. I'll report back.
January 22, 20242 yr Author Ok, so more updates. The drive in question doesn't seem to be spitting out any UDMC CRC errors after moving it to another bay slot (confirmed under the warning notification history page as well); however, is it normal for it to continue showing as a drive with errors on the dashboard (see below for reference)? I assume it has to do the smart attribute being stored and read by unraid and still being shown as a drive with errors? Further to that, I seem to have 1 more drive that's showing similar errors. I'll try do what @JorgeBrecommended and report back.
January 22, 20242 yr Author Adding diagnostics file here just in case. titan-diagnostics-20240122-1051.zip
January 22, 20242 yr Community Expert 11 minutes ago, VicePrez said: continue showing as a drive with errors on the dashboard You can click on the warning to acknowledge and it will warn again if it increases.
January 22, 20242 yr Author 2 minutes ago, trurl said: You can click on the warning to acknowledge and it will warn again if it increases. Oh my goodness, I didn't know I could do that. You live you learn. Thank you! I'll try swapping the the offending drive right after work and report back.
January 22, 20242 yr Community Expert 37 minutes ago, VicePrez said: try swapping the the offending drive UDMA CRC ERRORS just means the received data didn't pass checksum. This is almost certainly a connection issue and not a drive issue.
January 22, 20242 yr Author 1 hour ago, trurl said: UDMA CRC ERRORS just means the received data didn't pass checksum. This is almost certainly a connection issue and not a drive issue. For sure, @trurl - thanks a bunch. I noticed that as soon as i switched the drive to another bay slot after @JorgeB suggested doing that. I have one more to verify, which I'll do in a couple of hours.
January 26, 20242 yr Author Alright, so things seem to be stable. I ended up replacing the SATA cables as per your suggestions. Thank you all for your continued support. Marking this as solved. Edited January 26, 20242 yr by VicePrez
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