Re: rsync or dd to clone a hard drive?

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rsync is used primarily if you want to do file level backups.  If you wanted to make a complete bare metal restore of a partition or disk, then use dd.

It also depends on how much space you have for backups as well, since file level backups would be smaller in size then using dd.

On Oct 6, 2010, at 10:58 AM, Maxime Alarie wrote:

I have never used dd to clone a hard disk. 
 
I use rsync for a lot of   my backups , and I was wondering what would be the best tool to clone a  disk.  I don’t want 3rd party software also.  I want built in command  line tools.
 
I know rsync will resync where it left off if I encounter a problem, what about dd?  Do I  absolutely have to creat an image before cloning?  Ex: dd if=/dev/sda of=sda.img   or I can use dd if=/dev/sda of=/dev/sdb?
 
Thanks.
 
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