On Fri, Nov 12, 2010 at 11:04 AM, John Rouillard <rouilj-backuppc AT renesys DOT com> wrote:

On Fri, Nov 12, 2010 at 08:11:32AM +0000, Tyler J. Wagner wrote:
> If you've already got SSH and rsync installed, you'll always get better
> results with rsync than with tar.

That's not always true. On large files with lots of changes rsync can
bog down and you will get backups that take less time with tar (by 50%
or better is some cases) and you also use less cpu. However you do get
more bytes transferred over the network.

If the host you are backing up doesn't have a lot of spare cycles, tar
is also faster becuase of the reduced compute (and sometimes memory)
load. So it's a trade off and you can't just make a blanket statement.

--
                               -- rouilj

John Rouillard       System Administrator
Renesys Corporation  603-244-9084 (cell)  603-643-9300 x 111

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Centralized Desktop Delivery: Dell and VMware Reference Architecture
Simplifying enterprise desktop deployment and management using
Dell EqualLogic storage and VMware View: A highly scalable, end-to-end
client virtualization framework. Read more!
http://p.sf.net/sfu/dell-eql-dev2dev

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