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Date:      Sun, 6 Jul 1997 09:30:53 +0200
From:      j@uriah.heep.sax.de (J Wunsch)
To:        scsi@FreeBSD.ORG
Cc:        kmitch@weenix.guru.org (Keith Mitchell)
Subject:   Re: Archive Viper and 3940UW (bad Drive?)
Message-ID:  <19970706093053.ZG59677@uriah.heep.sax.de>
References:  <199707052152.PAA26449@pluto.plutotech.com> <199707060106.VAA12128@weenix.guru.org>

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As Keith Mitchell wrote:

> OK, that is what I thought originally, but then given that erasing them
> "seemingly" solved the timeout problem I don't know what to think.  What
> does erasing a tape actually do?  It doesn't take but a few seconds.

This sounds wrong.  For me, it makes an entire pass over the medium.
This is also what i'm expecting.  (Tandberg TDC4222, arbitrary QIC-150
cartridge.)  I know erasing a tape takes forever on a DAT medium.
QICs are faster here, since the erase head is really a quarter-inch
head, erasing all the parallel tracks at once.

QIC tapes are normally being erased before writing track 1 (i.e.,
while writing from the very beginning).

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)



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