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Date:      11 Oct 1999 12:20:26 +0200
From:      naddy@mips.rhein-neckar.de (Christian Weisgerber)
To:        freebsd-questions@freebsd.org
Subject:   Re: Why use tape for backups?
Message-ID:  <7tsdla$s25$1@bigeye.rhein-neckar.de>
References:  <87iu4etzlp.fsf_-_@main.wgaf.net> <ML-3.4.939605615.2767.patl@asimov> <19991011112417.S78191@freebie.lemis.com>

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Greg Lehey <grog@lemis.com> wrote:

> This used to be the correct answer.  I'm no longer sure it is.
> Certainly I think that the current generation of tape units is *much*
> less reliable than hard disk.

My not-so-current QIC-1000 drive (Wangtek 51000HT) is rock solid.
Okay, at home it only has to suffer weekly backups or so. But
considering that I have never cleaned it... I would expect current
generation QIC drives (Tandberg only I'm afraid) and DLTs to be
reasonably robust, too. Haven't heard anything to the contrary yet.

> The media are cheaper, but when I consider the number of DDS
> drives I wore out doing regular daily backups, I think that backing
> up to disk might have been cheaper.

One DDS drive every two years, right? How many cycles for each tape?
10? 20 if you're reckless?

-- 
Christian "naddy" Weisgerber                  naddy@mips.rhein-neckar.de



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