On Tue, 2009-08-11 16:14:33 +0800, Ming Gao <gaomin...@gmail.com> wrote: > I need to migrate 40T data and 180M files from one storage device to another > one, both source and destination will be NFS and mounted to a local suse > linux box. > > The first question is that if there is any risk for such a big number of > files? should I divide them into groups and rsync them in parallel or in > serial? If yes, how many groups is better? > > The second question is about memory. How much memory should I install to the > linux box? The rsync FAQ(http://rsync.samba.org/FAQ.html#4) says one file > will use 100 bytes to store relevant information, so 180M files will use > about 18G memory. How much memory should be installed totally? > > And any other thing I could do to reduce the risk?
There are no specific risks these days I think, but it sounds like
this is a task like "copy over anything", so it's merely mount both
filesystems and use two `tar' instances with a pipe in between...
MfG, JBG
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Jan-Benedict Glaw jbg...@lug-owl.de +49-172-7608481
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