*BSD News Article 75792


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From: dan@dnn.rockefeller.edu (Dan Ts'o)
Subject: Re: good vs cheap 8mm tape drives
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Date: Fri, 9 Aug 1996 17:01:08 GMT
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J Wunsch (j@uriah.heep.sax.de) wrote:
: marshalk@alaska.net (Marshal Kendziorek) wrote:

: > So, what is the thinking out there on a good SCSI 8mm tape drive.  I
: > have been reading mixed things about the exabyte 8200.  Whats good,
: > whats cheap and what good and cheap?

: To the best of my knowledge, all 8 mm drives are made by Exabyte

	That is my understanding as well.

: Those drives i have seen are very dissatisfying.  I would nobody
: recommend them at all (one 8200 and one 8505).  The success rates of
: our backups improved drastically after moving to HP-DAT.

	Actually my experience with them has been very good. I think the early
8200 had several problems, but later models have been very solid. A particular
8500 I have has been going for 4 years strong, doing 4-5Gb backups every other
day. I have several others that have worked well also. They aren't flawless
and occasionally need repairs, probably MTB of 2-3 years (of moderate use)
in my experience.
	OTOH, I also have an HP DAT that has been less than stellar. I have
read about a lot of problems with DAT drives. My understanding is that
inherently DAT tapes cannot last as long as 8mm (thinner tape for one)
and I suspect the DAT drives are made more cheaply as well. I would also
venture to guess that the consumer-driven 8mm video market may also be
driving 8mm engineering whereas it seems that DAT has been relegated to
computer backups and a small audio/entertainment recording sector. The 8mm
media is somewhat cheaper, transfer rates are higher and capacity for 8mm is
greater.
	Nevertheless since DAT drives are cheaper, DAT remains a good choice
for backups. I didn't mean for this to sound totally pro-8mm as that is not
the way I see it.

: Too many vastly different opinions on this.

	Like you said...