On Tue, Apr 14, 2009 at 10:14:43AM +0200, Frank Bonnet wrote: > Hello > > I have to copy around 250 Gb from a server to a Netapp NFS server > and I wonder what would be faster ? > > first solution > > cp -pr * /mnt/nfs/dir/ > > second solution ( 26 cp processes running in // ) > > > for i in a b c d e f g h i j k l m n o p q r s t u v w x y z > do > cp -pr $i* /mnt/nfs/dir/ & > done > depends! I moved 1.6T of multimedia files from a server with 8x 1T raid5 to another 10x1T raid6 over 1G eth. I tried rsync over ssh, cp over nfs, nfs via tcp and nfs via udp and then rsync over nfs On the new server I mounted the old data via nfs (udp,ro) and then started about 3-4 rsync's for each rsync I would see an incermental increase in through put (checking network and iostat ). another thing you can look at is blockdev read ahead for each device as well. > > Thank you > > > > -- "Drug therapies are replacing a lot of medicines as we used to know it." - George W. Bush 10/18/2000 St. Louis, MO during the third presidential debate
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