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Date: Fri, 4 Oct 2002 14:24:19 +0100
From: "Dr. David Alan Gilbert" <gilbertd@treblig.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       linux-raid@vger.kernel.org
Subject: Re: RAID backup
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* Alan Cox (alan@lxorguk.ukuu.org.uk) wrote:
> 
> The problem with disks is you still have to archive them somewhere, and
> they are bulky. I also dont know what studies are available on the
> degradation of stored disk media over time. 

Not sure about that; DLT tapes are pretty bulky themselves; I think the
difference between say a set of 4 DLT tapes and a single Maxtor 320 in
caddy would be minimal. As for stored media, I think Maxtor are quoting
1M hours MTTF - (I hate to think how you measure such a figure) - for
the 320G, and that is probably longer than I'd trust either the tape or
the drive to survive.

> Capacity is not a problem, 3ware do a 12 channel sata card, with maxtor
> drives that comes in at 320x12 = 3.5Tb

Well to me there are two questions:
  1) Price with caddy/drive - especially when you need to have
	multiple backup sets.

	2) Linux serial/ata working reliably with hot swapping.

If both those came out on the right side then I'd happily swap to discs.

Dave
 ---------------- Have a happy GNU millennium! ----------------------   
/ Dr. David Alan Gilbert    | Running GNU/Linux on Alpha,68K| Happy  \ 
\ gro.gilbert @ treblig.org | MIPS,x86,ARM, SPARC and HP-PA | In Hex /
 \ _________________________|_____ http://www.treblig.org   |_______/
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