> >it is not important but it would not pollute buffer cache...
> >
> >wouldn't tar have the same speed?
> 
> I don't know.
> 
> When using dumping on multiple filesystems it does some kind of

how to dump simultanously multiple filesystems?
maybe i don't understand tar.

> multi-process magic.  I don't know how this affects tar.  I've never
> had to optimize my tape image creation for speed.  
>
> One nice thing about dump and restore is that you can cd into the
> restored tape and find a file, pluck it out and restore only that
> file, since dump puts some superblock-like information at the head of
> the tape.  Tar I think is more of a monolithic archiving format.
yes