Date: Mon, 3 Aug 1998 22:01:27 +0200 (CEST) From: Wilko Bulte <wilko@yedi.iaf.nl> To: joerg_wunsch@uriah.heep.sax.de Cc: scrappy@hub.org, scsi@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: Odd problems with -current... Message-ID: <199808032001.WAA02844@yedi.iaf.nl> In-Reply-To: <19980803104548.08864@uriah.heep.sax.de> from J Wunsch at "Aug 3, 98 10:45:48 am"
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As J Wunsch wrote... > As The Hermit Hacker wrote: > > > I just put in a 2gig Seagate SCSI drive on my system, to replace a > > 2gig IDE drive, and after running for awhile, it *seems* that the drive is > > powering down, cause when I try to access something on that drive after > > leaving for a period of time, you can hear it power back up again. > > I have been observing this for drives where the SCSI chain had term > power problems. ISTR that it's been that more than one device was > driving term power to the bus, and they apparently had some slightly > conflicting idea about the actual term power level or such. So to be > sure, it's IMHO always the sanest way to just have the host adapter > driving term power, and have all drives leaving the term power line Yep. This also has the added advantage that shorting TERMPWR to ground does not smoke the cables. Each device is normally capable of sourcing > 1 A of current so it adds up.. Wilko _ ______________________________________________________________________ | / o / / _ Bulte email: wilko @ yedi.iaf.nl |/|/ / / /( (_) Arnhem, The Netherlands WWW: http://www.tcja.nl ______________________________________________ Powered by FreeBSD __________ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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