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Date:      Mon, 12 Apr 1999 13:28:54 -0700 (PDT)
From:      David Wolfskill <dhw@whistle.com>
To:        freebsd-hardware@FreeBSD.ORG
Subject:   Re: DDS-2/DDS-3 drives
Message-ID:  <199904122028.NAA97638@pau-amma.whistle.com>
In-Reply-To: <l0313031db3348bd30c27@[203.17.167.17]>

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>Date: Sat, 10 Apr 1999 15:09:06 +1000
>From: Richard Archer <rha@interdomain.net.au>

>DLT-7000 has superior performance only if your system can stream data to
>the drive at the speed the drive writes to tape. As soon as the drive has
>to stop, rewind and resynchronize, the performance drops back to DLT-4000
>levels, and the longevity of the drive falls remarkably.

Which is an excellent reason to make use of software such as "amanda",
which will (if you let it) use disk space on the "backup server" as a
big speed-matching buffer... and (not-so-coincidentally) also permit
concurrent dumps from multiple filesystems.

Cheers,
david
-- 
David Wolfskill		UNIX System Administrator
dhw@whistle.com		voice: (650) 577-7158	pager: (650) 371-4621


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