Looking for some advice on my issue. Bit of an unraid noob so be patient with my ignorance. I haven't messed with my system in months since first setting it up and haven't had any issues. I have been getting low on space so recently got some new drives to install. Powered down the system, installed new drives, swapped some cables around inside for better cable management, then powered back on. Once the array was running I started doing preclear for the new drives I put in. Soon after I got an error about an I/O issue on one of my old drives and unraid disabled the drive. Not being familiar with what this meant, I figured it might be a cable issue so I powered down and made sure all my cables were plugged in correctly. Turning the system back on and the disc was still disabled (being emulated). After skimming the forums a bit, it sounds like this is often a cable issue. Since my system has been working fine before this and my drives aren't that old, it would make sense if it was something unrelated to the drive.

 

I am using a PCI board with SAS to SATA breakout cables. Before today I was using 4 drives with just one breakout cable so today I installed a 2nd breakout cable onto the board using the same brand of cable I used before. Each SAS connection is being used by multiple drives, but only one of them is having the issue. If this is a cable issue, why would only one drive be affected? Is it maybe a power issue?

 

Here's the hardware I purchased:

https://www.amazon.com/dp/B0085FT2JC?ref=ppx_yo2ov_dt_b_fed_asin_title

https://www.amazon.com/dp/B012BPLYJC?ref=ppx_yo2ov_dt_b_fed_asin_title

 

A short SMART test showed no issue with my drive and I am currently performing an extended test, I will post the results when it is done. I am attaching the diagnostic files and syslog files, although they may be missing some info since I restarted my system before reading the forums (oops).

 

Is there anything else I should do while the extended test is running? If it shows no errors it sounds like the next step would be to rebuild the drive:

https://docs.unraid.net/unraid-os/manual/storage-management/#rebuilding-a-drive-onto-itself

 

Any help appreciated!

alexandria-diagnostics-20241116-1551.zip alexandria-syslog-20241116-2151.zip

Disabled/emulated disk1 is mounted and has plenty of data, so rebuild on top should be good. SMART attributes look OK, extended self-test will take a while.

I canceled the extended self- test and have begun the data rebuild (in maintenance mode) and am getting errors. Is this an issue?

 

 

Edited November 17, 20241 yr by spiralout154

Attaching new logs

alexandria-diagnostics-20241116-2109.zip alexandria-syslog-20241117-0254.zip

Cancel the rebuild, check/replace cables on disk2 and try again.

Just posting to confirm the solution for this issue. I believe the sata power cable I was using had too many daisy-chains and was not providing enough power to the drives that were getting errors. After doing some cable changes I was able to rebuild with no issues and then add my new drives.