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Date:      Tue, 14 Oct 1997 11:17:42 -0400
From:      Andrew Heybey <ath@bellcore.com>
To:        Gareth McCaughan <G.J.McCaughan@dpmms.cam.ac.uk>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: non-SCSI backup devices
Message-ID:  <199710141517.LAA22627@grapenuts.bellcore.com>
In-Reply-To: Gareth McCaughan's message of Mon, 13 Oct 1997 23:51:45 %2B0100
References:  <E0xKtKz-00012h-00@jay.dpmms.cam.ac.uk>

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>I need a backup device for my FreeBSD box. The data on it aren't
>*immensely* valuable, so I don't want to be spending huge sums;
>
>Am I right in getting the impression that most of the startlingly
>cheap recent backup devices aren't supported by FreeBSD? (This is
>not a complaint; I presume the reason is that they involve nasty
>proprietary protocols or something.)
>
>Is the Right Thing to forget about doing it on the cheap and buy
>a SCSI card and a DAT drive?

I just bought a computer (of my own, so I am not spending my employers
money) and went through the same decision.  I think that the choice is
clear: the cheap tape drives are a) not well supported and b) the
tapes cost an arm-and-a-leg.  I saw a TR-4 with a floppy interface for
~$170, but if you buy half a dozen tapes at $25 you have almost
doubled the price to $320.

One of the online auction places is selling brand new Seagate DDS-1
DAT drives for about $230 or so and NCR SCSI controllers for $50-$60
(since it is an auction, it depends on how lucky you get).  I took a
risk and bought one of each for $240 + $70 (including $10 each for
shipping).  90 meter DDS-1 tapes only cost $6 so the price (compared
with the TR-4 above) for drive + controller + 6 tapes is about $340.
For $20 more I got a tape drive which is better supported, runs faster
and uses much cheaper media.  Plus I got a SCSI controller out of the
deal.

The drive works fine and is faster (about 400kB/sec) than some other
DDS-1 drives (the HP DDS-1s are about 180kB/sec).  A 90m tape will
hold 2G uncompressed.  This drive does *not* do compression--use
amanda.

I bought the drive a week or so ago but I just checked today and
www.onsale.com is still selling them now.  They come with a one-year
warrantee from Seagate.  I haven't done extensive tests yet but a few
tars and dumps/restores have worked fine.

[Disclaimers & caveats: Not affiliated with onsale.com; I just gave
them my credit card number and they sent me a tape drive.  The NCR
controller they are selling does not have a BIOS so if your
motherboard BIOS doesn't have NCR support you won't be able to boot
from it.]

andrew



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