in-situ conversion to FT disk config? - backup FYI

[Drew Van Zandt]

300GB  drive $89 after $40 rebate at TigerDirect:
http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=1388892&Tab=5
Limit 1.
Seagate / 300GB / 7200 / 8MB / ATA-100 / 5-year warranty.

Also, make sure you have a boot CD that speaks RAID, in case you oops.   :-)

--DTVZ

On 11/15/05, Michael ODonnell <michael.odonnell at comcast.net> wrote:
>
>
> >> perform an on-the-fly conversion from my vulnerable
> >> single disk config to an FT config that brings that
> >> second disk (hdc) into play without me needing to make
> >> substantial changes to hda.
> >
> >No, that won't work; when you set up RAID or LVM on the
> >disks, you'll lose all the data on the disks.
>
> Understood.  I can dream, though...  theoretically it should be
> possible to lay the {RAID,LVM,otherFT} metadata down on the disks
> such that any existing {MBR,filesystem} bits remain untouched
> and the disk becomes usable as part of an FT config (and maybe
> even still being usable as a "normal" disk?)  DVZ's approach
> does still require transfer of all data from the non-FT disk
> to the newly config'd "degraded RAID" so you're right; it's
> not a true in-situ conversion.  Still, it's a straightforward,
> low-risk solution that doesn't require purchase of additional HW,
> so I'm glad I asked.
>
> > RAID protects you from a hardware failure; it's not a replacement
> > for backups.
>
> What?  well, if a RAID won't protect me against corruptions,
> overwrites and the occasional "rm -rf *"   then, never mind!   ;->
>
> Thanks for the feedback.
>
>
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--
Drew Van Zandt