June 30, 201016 yr I noticed that copying files within unRaid seems to be much slower than copying files through the Gigabit network. I could copy/move files using windows through my gigabit network from 2 unraid drives at 75-80MB/s. I cannot tell what is the speed unraid copies the files from within unRaid itself using (cp -r /mnt/disk# /mnt/disk#) but it seems significantly slower. I thought this had to do with parity drive but even with parity drive removed, it is still extremely slow.
July 1, 201016 yr When you copy to unRAID over the LAN, you are apparently copying to a cache disk. That will always be faster than copying to a /mnt/disk# share.
July 1, 201016 yr I noticed the same thing. But I don't have a cache disk set up, or does unRAID automatically create a cache partition or something like that?
July 1, 201016 yr Author Wait a sec...even with parity disabled, unraid is capped at 20+MB/s? I'd thought that without parity drive, one could copy data within unraid disks at full speed (only capped by the slowest drive).
July 1, 201016 yr No, unRAID is not capped at anything. It could be many problems, not the least likely is PIO mode for the drive, bad cabling, etc. You need to post a syslog, and identify which drive you are are writing to.
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