SOFTWARE-based mirroring is NOT a good way to go, as your example
proves. Mirroring needs to be implemented at the controller level, or
better yet, dual controllers. Mirrored RAID-5 would be very good.
Yeah, maybe a bit pricey...
Earl
Piers Hemy wrote:
>Sadly, a firend was persuaded by his son-in-law to do just that, installing
>a duplicate hard drive with mirroring software to provide the backup.
>Somehow the file allocation table on the master drive was corrupted - and
>the mirroring software did precisely what it said on the tin, duplicating
>the error on what had been the backup.
>
>Both disk are with recovery specialists as I type, trying to reconstitute
>the FAT for either disk to recover tens of GB of image data. The data are
>all, without exception, present and uncorrupted on the disk. It's just not
>obvius what sequence they should be in...
>
>But I do agree about the principle - I have a 120GB external USB disk with
>Iomega Auto Backup software running daily on my user data, and occasional
>Norton Ghost backups of the entire C: drive.
>
>--
>Piers
>
>
>-----Original Message-----
>From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
>Of Winsor Crosby
>Sent: 15 June 2005 16:22
>To: olympus@xxxxxxxxxx
>Subject: [OM] Re: Progress report on crashed hard drive
>
>--snip
>
>If you use a hard drive backup you have a check on it every time you add
>some additional files. It seems to me that the chances of their both failing
>at the same time is slim.
>
>--snip
>
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
|