it depends on what level the error occured. Raid is only going to save you when a disk fails. It seems like here the computer has corrupted the file system. This is an error in the OS not the software. The raid then mirrors the errors across the raid.
----- Original Message ----- From: "David" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]>; "John Aranibar" <[EMAIL PROTECTED]>; "SLUG List" <[EMAIL PROTECTED]> Sent: Saturday, January 18, 2003 5:50 PM Subject: Re: [SLUG] Backup System > > I installed a hardware raid some time ago for backup/security. One of the > disks became corrupted and the other dutifully mirrored the corruption. > I'm not a geek, so I questioned the manufacturer of the raid card and they > simply told me that raid copied whatever was there! Huh? > > Does anyone have any comment about this? > > For the record, now I use a combination of rsync and CD burning. > > On Sat, 18 Jan 2003 [EMAIL PROTECTED] wrote: > > > On Sat, Jan 18, 2003 at 07:21:19AM +1100, [EMAIL PROTECTED] wrote: > > > > > > There are DLT drives which do 80 gig - maybe 100, although I haven't seen > > [ .. ] > > > > If I'm not mistaken, the number in DLT whatever e.g. DLT80 refers to > > the capacity after compression, assuming 2x compression, which is typical. > > > > There is DLT20, 40, or 80. I believe DLT160 s are coming out real soon now. > > > > The best approach to backing up is usually to say no. Surprisingly > > little data on many machines is not recoverable or reproducable or that > > inportant in the first place. > > > > Next best approach is to only do it incrementally, forever. I.e. use > > rsync to remote copy. The only thing this doesn't give you is to go > > back to a point in time easily. > > > > Whatever you do, compare the cost of backing up versus the probability > > of losing the data times the cost of losing the data. > > > > Matt > > > > -- > > SLUG - Sydney Linux User's Group - http://slug.org.au/ > > More Info: http://lists.slug.org.au/listinfo/slug > > > > -- > SLUG - Sydney Linux User's Group - http://slug.org.au/ > More Info: http://lists.slug.org.au/listinfo/slug > -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
