On Wed, Feb 3, 2010 at 8:08 AM, Dave Howorth
Hans de Faber wrote:
Also a good idea is to do the backup with compression, then you don't have to copy all the empty blocks.
Not necessarily. When dd is running efficiently it is much faster than any file-based scheme especially one using compression. So if the disk is full of things that change a lot it can be faster. It's also simple!
But usually, yes, a dedicated backup program can be faster for typical filesystems and provide extras such as multiple backup copies on a single backup drive etc.
Cheers, Dave
I agree, but it really depends on where the bottleneck is. If you can read data much faster than you can write it, then compression can accelerate the process by allowing our write process to go faster. If read and write are the same speed and they don't interfere with each other, then compression can not accelerate the process. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org