David Brodbeck wrote: > On Sun, Jan 2, 2011 at 11:56 AM, Jason C. Wells <j...@speakeasy.net> wrote: > > Is using one half of a mirror as a backup a good/bad idea? > > > > I was thinking of rotating drives on a periodic basis as a back up method. > > You'd get the backup instantly, but rebuilding the mirror with the incoming > > drive would take a little time and leave you vulnerable to a small loss of > > data if a disk failed while the mirror was rebuilding. > > Besides the problem you mention, you'll have a pretty sizable > performance hit while the mirror is being rebuilt. Also, keep in mind > that the most likely time for a second drive to fail is during a > rebuild, since the rebuild forces a read from every sector. I think I > would use rsync or dump instead, although I have to admit the rotating > mirror idea is clever.
Ref rsync: Personally I use rdist6, (from familiarity=habit rather than conscious choice, (it's more limited predecessor rdist, has been in BSD a Long time)) But beware: rdist6 fails on files bigger than 2G on i686 but (not on amd64, on amd64 no problem), I wouldnt know if rsync might have a similar 2G restriction. Cheers, Julian -- Julian Stacey, BSD Unix Linux C Sys Eng Consultants Munich http://berklix.com Mail plain text; Not quoted-printable, or HTML or base 64. Avoid top posting, it cripples itemised cumulative responses. _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
