Hi, Hugo: On Tuesday 04 May 2010 20:25:52 Hugo Vanwoerkom wrote: > martin f krafft wrote: > > also sprach Hugo Vanwoerkom <[email protected]> [2010.05.04.1808 +0200]: > >> I forget your specifics, but you do RAID *and* backup regularly to an > >> external lvm2? > > > > RAID is not a backup solution, it's an availability measure. > > But as data availability goes up by using RAID doesn't the need for > backing up that same data go down? Or is this just semantics?
No, it isn't. While avaliability relates to a quantitative concept (how much time, out of the total, will this system be online?), backup relates to a qualitative concept (it either works, in which case I don't need the backup at all, or it doesn't work in which case I need the backup, no excuses). Rising avaliability means that you'll need your backups (say) once every ten years instead of once a year. But when you need them, there's no option: you need them. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
