Does block level replication require local disk access (Block lev el) or can it work with a network share too

jw schultz jw at
Thu Jul 24 03:44:24 EST 2003

On Wed, Jul 23, 2003 at 02:18:41PM +0100, Antony Parkin wrote:
> Could i run rsync on a linux server which is connected to a network share
> (NAS) and replicate the diffs of the files residing on the network share? or

Rsync will run just fine on network filesystems.

That said, due to the disk access pattern of the "rsync
algorithm" unless the bandwidth to the filesystem is a
multiple of the bandwidth of the rsync connection you will
get better performance using the --whole-file option.

> does this functionality require block level access i.e Local disk or SAN?

Rsync operates at the file level so it needs no access to
the block device.

	J.W. Schultz            Pegasystems Technologies
	email address:		jw at

		Remember Cernan and Schmitt

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