Date: Thu, 27 Jan 2000 01:36:29 +0100 From: Palle Girgensohn <girgen@partitur.se> To: mjacob@feral.com Cc: Greg Lehey <grog@lemis.com>, "Louis A. Mamakos" <louie@TransSys.COM>, freebsd-scsi@FreeBSD.ORG Subject: Re: cannot mt retension (seagate python) Message-ID: <388F930D.33757719@partitur.se> References: <Pine.BSF.4.10.10001261616590.62527-100000@beppo.feral.com>
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Matthew Jacob wrote: > > > On Wednesday, 26 January 2000 at 14:33:37 -0800, Matt Jacob wrote: > > >>> Hmm... my tapes sometimes jam. I though a retension would help, but > > >>> I guess I have to calculate on a certain amount of failure. > > >> > > >> No, this is a problem with your drive. This shouldn't happen, and > > >> it's a bad sign. > > > > > > This happens with some frequency with DAT. Regular head cleaning > > > helps, > > > > That depends on what's causing the jamming. I've never seen any > > relationship between jamming and head cleaning. > > If enough gunk builds up on the heads, the tape lifts off slightly and starts > a roll which can get reverse wrapped around a capstan roller. Actually, what has happened is that the end of the tape has twisted 90 deg. and lies "on top of the casserole" close to the tape rotation axis. (Hey, my English isn't native, please *try* to understand ;-) It is more likely that it has been rewinded too fast than that it has gotten stuck in the capstan or around the tape heads. /Palle To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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