Jump to content

Best way to copy 31tb


Recommended Posts

Guys, I have a ten-disk server and I am transitioning over to a second server.  I have 31TB of data to move.  


Can I power down the old server, pull a disk out, put it in the new server, mount it with Unassigned Devices, and move the data directly from the command line?  Seems like this would be the fastest way to move so much data at once.



Link to comment

You should disable parity on the target server in any case. Then enable it back when all the data is there. 

If possible, you could also look at installing 10Gb cards in the 2 servers, they are not expensive (~$20) and this is the perfect use case.


20MBps seems really slow to me in any case, is that the read speed you get as well?

Link to comment

If I disable parity, will I need to do a parity check once the data is moved?


10g cards is a good idea, I had no idea they were that cheap.


Read speeds are generally better, Windows copy over gig-e is 20MB/s, right now I am 'cp -R'ing from the command line and cannot measure speed.

Link to comment

Yeah, thanks.  I was using it, figured out real quick it was slowing things down.  I'm averaging:


Device eth0 [] (2/10):
Incoming:                               Outgoing:
Curr: 216.14 MBit/s                     Curr: 1.26 MBit/s
Avg: 445.31 MBit/s                      Avg: 2.50 MBit/s
Min: 952.00 Bit/s                       Min: 26.27 kBit/s
Max: 904.55 MBit/s                      Max: 13.86 MBit/s
Ttl: 3756.96 GByte                      Ttl: 1843.84 GByte


according to nload


Good enough for now.  I'm moving a few hundred gigs for now, and when its time for the huge batch move, I'll unassign the parity disk and see how much faster things go.


Thanks again.

Link to comment


This topic is now archived and is closed to further replies.

  • Create New...