Hi everyone,
I'm seeing slow write performance when writing to the array but not directly to disks. I've tried a number of suggestions I've found in other posts about similar topics, although I think mine is slightly different.
Originally I wondered if it was something related to my parity disk, but I've just removed my parity disk from the array entirely and write performance is still bad even without it.
Directly to my disks, I get 170-180MB/sec writes, but writing to the array is between 1.8-2.4MB/sec:
All my disks are identical (Seagate Ironwolf 6TB SATA), all connected to the same onboard SATA controller on my Asrock x470 Taichi Motherboard, with an AMD Ryzen 9 3900x with 32GB ram.
I've stopped all VM's and docker containers to no avail. I've tried direct IO, turbo write, nothing seems to help.
I've also attached a diagnostics zip, if that helps.
Any suggestions are very welcome!
Thanks :)
unraid-diagnostics-20200725-1949.zip