how to migrate 40T data and 180M files
gaomingcn at gmail.com
Tue Aug 11 02:14:33 MDT 2009
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
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?
Thanks in advance.
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