EchoedMike Posted January 24 Share Posted January 24 Hello All, I just setup my Unraid server and then added a parity drive. My setup consists of two 12TB drives with one in parity. I have started the initial parity-sync with speeds between 30-40MB/s but this seems very low. I have ran Diskspeed on both drives where the speed starts at ~200MB/s and ends at ~100MB/s which seems normal to me. Any ideas why the parity-sync is so much slower? Thanks unraid-server-diagnostics-20240124-1736.zip DiskSpeed Screenshots.zip Quote Link to comment
Solution JorgeB Posted January 25 Solution Share Posted January 25 Parity disk has a failing now SMART attribute, which I believe is the helium level, try swapping both disks around, issue may only show during writes. Quote Link to comment
itimpi Posted January 25 Share Posted January 25 The parity disk also seems to have 44 reallocated sectors which is never a good sign if this is a newish drive. Quote Link to comment
EchoedMike Posted January 26 Author Share Posted January 26 Thanks for the info! It was a failing drive. I moved the parity drive to the array and tried copying to it. The transfer speed started at ~200MB/s but slowed to ~40MB/s within a minute. I put a different 2TB drive in, copied all my files to it, then made the good 12TB drive the parity. Now have 200MB/s parity sync Thanks for the help! The drive has been RMA'd 1 Quote Link to comment
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