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Unraid Extremely slow Parity Check

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So i have been using unraid for the last 2 years, no real issues. i currently run

1 - 14TB Exos (Parity) - 7200rpm

2x 14TB Exos - 7200rpm

1x 10TB - 7200rpm

1x 8TB - 7200rpm

3x 6TB 5700rpm

 

With these drives the 3 14tb and the 10tb are new(ish) and not throwing up any errors

I have used the Tweak plugins, parity check tuning, docker safe perms, and other type plugins to help.

 

Prior to about 2 weeks ago my parity checks lasted 28 hours on a 14TB. Seems to have started after i plugged in a ssd for cache drive and lately tho the parity check says its speed of 1.8MB/s and take 180 days to complete. I checked the diskspeed and nothing pops up that would entail this being a problem. I got no errors on the disks. My CPU on the other hand runs at a tight 98% usage during this period of check and when its not checking it still seems to run max. Is the CPU slowing up the parity check at all?

 

My Server specs:

Amd FX-8320E 8 Core

16GB Ram.

 

Now i did purchase a server to replace this one, hoping to get better results. I bought a Dell Poweredge R730xd 12LFF with 2x 12 Core cpu and 64GB Ram.

 

Can anyone help me with this and figure out whats going on?.

 

Diagnostics are attached.  Im not sure what to be looking for.

tower-diagnostics-20230130-1829.zip

Edited by LordBeekz
Deleted some info that wasnt needed to clean up the post

Solved by trurl

  • Community Expert
  • Solution

Connection problems with parity disk. Shutdown, check connections, power and SATA, both ends, including splitters. Reboot and try again.

  • Author

If connection problems with cables, i may just wait til the new server comes in this week and full swap the disks. 

  • Community Expert

Look at all the ata3 entries in syslog

 

from system/lsscsi.txt in diagnostics, ata3 is

[1:0:0:0]    disk    ATA      ST14000NM001G-2K SN03  /dev/sdd   /dev/sg3 
  state=running queue_depth=32 scsi_level=6 type=0 device_blocked=0 timeout=30
  dir: /sys/bus/scsi/devices/1:0:0:0  [/sys/devices/pci0000:00/0000:00:11.0/ata3/host1/target1:0:0/1:0:0:0]

 

  • Author

Trurl, what am i not seeing in there (new at this stage)

  • Author

Thanks Guys, This has been solved, a bad sata cable connected to the parity drive. 

  • Community Expert
21 minutes ago, LordBeekz said:

Trurl, what am i not seeing in there (new at this stage)

ata3 is sdd

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