I think you're wrong, Ian. The poster I've forwarded below seems to
know the _REAL_ answer.
...Don't you hate it when the clueless speak like they are the
authority?
This came from the SVLUG list. As yet no one has responded
intelligently.
-Ken
-----Forwarded Message-----
From: Alex A. <arbitman@pacbell.net>
To: svlug@lists.svlug.org
Cc: kpneil@haube.org
Subject: Re: [svlug] Raid 1 with Linux question
Date: 03 Dec 2002 09:01:37 -0800
> I've done quite a bit of reading about setting up raid 1 with
raidtools but
> have not found the answer to my situation.
> I have an 80GB hd which is almost full and have got hold of a second
hd of the
> same size and I now want to mirror the first on the second with raid
1.
> Problem is all the hints, advice, and, howtos seem to assume your
starting
> with blank discs and get you to format both of them when you're
setting up
> raid 1.
There is no way to build RAID and preserve existing data on one of the
disks. My advice to you is to buy IDE-RAID controller(around $80.00) and
get third 80G HD. Build RAID1 using 2 clean disks. Create same
partitions (same name and size) on RAID disks at install time. Boot new
OS using RAID disks and copy all data from original disk to your RAID.
Use "tar" or "CPIO" to do it the easy way. Then erase all data from old
disk and switch it with one of RAID disks. Return third disk if you are
not planning to use it. I hope all of it was clear enough.
> Is it possible to set up one half of the raid 1 array and then copy my
present
> data to that, whereupon I could reformat the (presently almost full)
disc and
> incorporate it into the raid 1 array? Is that question clear? I hope
so!
> Neil
I am not sure if I understood this question. But make sure you don't do
RAID on same disk. It makes no any sense at all.
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