dawson2938

Update, I've narrowed the issue with my parity check speed down to 4 drives all connected to the same port on my sas expander (Adaptec AEC 82885t). I removed these 4 drives from the array and speeds are back to normal. After digging through the syslog file I noticed a bunch of "power-on or device reset"" all coming from these same 4 drives. This expander has a total of 19 drives connected directly to it and another expander daisy chained with 8 additional drives. Is this too much for the expander? Heating issue? I've already replaced the breakout cabled 3 times and it has not resolved. Since the 4 drives have been removed not a single error.

I've been beating my head against a wall struggling with this for the last month. Around a month ago I bought a lot of 15 18tb Seagate EXOS SAS drives at an absolutely steal of a price (I was sent smart test data before purchasing). When I first went to install they were put into a JBOD with a Adaptec SAS3 Expander connected to a SAS2 HBA in my main chassis. The first time I booted no drives were showing. After troubleshooting the PSU, Expander, HBA, Drives, and Cables, I determined it was a cable issue and I replaced all of the cables and then they showed up. At first everything was okay but after a few days I had a drive become disabled. I rebuilt the drive and it was okay for a bit and then 2 drives went disabled, one was the same one as the first time and this time a second one did. I replaced cables again and then rebuilt and those drives have been fine, however since then 2 other drives disabled. Basically they are throwing I/O read errors. I have since replaced cables and gotten it down to the point where only 4 drives are throwing errors and those are all on the 1x4 breakaway cable. I replaced that cable but one of the drives is still throwing read errors. In the process of troubleshooting I have also replaced the main HBA with a SAS3 9300-16i HBA. I have also attempted to disabled EDC on the Seagate drives based on some other threads I read here. After making these changes and replacing the 4x1 breakaway cable again I got everything back running and attempted to run a correction writing parity sync but it is running extremely slow. 342 KB/sec slow. Tried running Diskspeed and all drives came back fine. Tried disabling docker but nothing has increased speeds and one drive is still throwing read errors after all this. so TLDR - bought 15 new seagate drives - none worked, but replaced cables and they work fine for a bit. - assortment of drives started disabling due to read errors. - replaced cables, expander, hba. - only one drive still throwing errors but parity sync is extremely slow. I'm out of ideas. Please Help! tower-diagnostics-20240214-1611.zip

Running into this issue on 6.12.6 with some new 18th EXOs SAS Drives. I get Successfully Disabled EPC Feature Set on /dev/sg7. when I send command to any drives but then directly afterwards it still shows EPC enabled. Anyone seen this or have any suggestions?