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Date:      Tue, 13 Apr 1999 12:38:30 +0930
From:      Greg Lehey <grog@lemis.com>
To:        David Wolfskill <dhw@whistle.com>, freebsd-hardware@FreeBSD.ORG
Subject:   Re: DDS-2/DDS-3 drives
Message-ID:  <19990413123830.E74226@lemis.com>
In-Reply-To: <199904122028.NAA97638@pau-amma.whistle.com>; from David Wolfskill on Mon, Apr 12, 1999 at 01:28:54PM -0700
References:  <l0313031db3348bd30c27@[203.17.167.17]> <199904122028.NAA97638@pau-amma.whistle.com>

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On Monday, 12 April 1999 at 13:28:54 -0700, David Wolfskill wrote:
>> 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.

IIUC, amanda doesn't handle EOM correctly, which makes it less than
excellent.

Greg
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