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From: src@scuzzy.mbx.sub.org (Heiko Blume)
Newsgroups: comp.unix.i386
Subject: Re: < 3 SCSI Drives on ISC 2.02 (problem) >
Message-ID: <1990Aug03.132554.13326@scuzzy.mbx.sub.org>
Date: 3 Aug 90 13:25:54 GMT
References: <675@unlisys.UUCP> <3491@tmiuv0.uucp> <11090@alice.UUCP>
Distribution: comp
Organization: Scuzzy Research Center (SRC)
Lines: 20

debra@alice.UUCP (Paul De Bra) writes:
>?possible that your supplies are crowbarring.

>There is a potential problem indeed, but what's most important is how
>power hungry the drives are. I don't know about the Quantum but the
>Wren V only needs about 15 Watts (average), while a Seagate 4096 or similar
>drive needs almost twice as much. The Wren V (mine is a 383H, esdi, not scsi)
>is an excellent choice if power is a problem.

the danger is how much the drives need when you power them up. i RTFM'ed
a bit and found out that my 600MB WREN V uses up to 4.5 ampere on startup
(on 12V). well, most 220 watt power supplies can give you 8 ampere on 12V
so if you connect two of these beast you might get problems.
i also phoned around, and bigger power supplies like 300+ watts are very rare
and *very* expensive. i'll get more info next week, anybody interested?
-- 
Heiko Blume c/o Diakite   blume@scuzzy.mbx.sub.org    FAX   (+49 30) 882 50 65
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