December 6, 20241 yr Hi, I am backing up my mainserver to my backupserver. The backupserver is an array and while writing to the array, it also reads data at the same time from the same disk. The array is BTRFS, and I was expecting the data coming from the mainserver to be written to the array at higher speed, and TBH, I never saw the array disks being read off, when the array was ZFS. The speed was much higher because the data disk and parity disk were both writing at their max speed. How come the array is now reading from a data disk (to the parity disk?) while a steady flow of backupdata comes from my mainserver?
December 6, 20241 yr Community Expert Solution That would be expected if you are using the default write mode. You might want to read up on the write modes here in the online documentation accessible via the Manual link at the bottom of the Unraid GUI. In addition every forum page has a DOCS link at the top and a Documentation link at the bottom.
December 6, 20241 yr Author 36 minutes ago, itimpi said: That would be expected if you are using the default write mode. You might want to read up on the write modes here in the online documentation accessible via the Manual link at the bottom of the Unraid GUI. In addition every forum page has a DOCS link at the top and a Documentation link at the bottom. Yeah makes sense! I did switch to reconstruct write. Thanks!
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