Copying within unRaid is slower in telnet vs Gigabit?!

[kin0kin]

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.

[bubbaQ]

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.

 

 

 

 

[abernardi]

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?

[kin0kin]

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).

[bubbaQ]

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.