From owner-freebsd-hackers Sat Dec 2 19:12:48 1995 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id TAA12164 for hackers-outgoing; Sat, 2 Dec 1995 19:12:48 -0800 Received: from brasil.moneng.mei.com (brasil.moneng.mei.com [151.186.20.4]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id TAA12153 for ; Sat, 2 Dec 1995 19:12:40 -0800 Received: (from jgreco@localhost) by brasil.moneng.mei.com (8.7.Beta.1/8.7.Beta.1) id SAA04982; Sat, 2 Dec 1995 18:13:13 -0600 From: Joe Greco Message-Id: <199512030013.SAA04982@brasil.moneng.mei.com> Subject: Re: No Thumbs??? (lack of concensus) To: jkh@time.cdrom.com (Jordan K. Hubbard) Date: Sat, 2 Dec 1995 18:13:13 -0600 (CST) Cc: dgy@rtd.com, freebsd-hackers@freefall.freebsd.org In-Reply-To: <4616.817948317@time.cdrom.com> from "Jordan K. Hubbard" at Dec 2, 95 03:51:57 pm X-Mailer: ELM [version 2.4 PL24] Content-Type: text Sender: owner-hackers@FreeBSD.ORG Precedence: bulk > > Jordan, so quick to say no. The answer is dependent on the drives, how > > close you are running to the capacity of the supply, etc. Most enclosures > > have wimpy power supplies, this is a problem :-( > > Yes, but I never use enclosures with wimpy power supplies (you should > see the one in wcarchive!) so such power sequencing isn't necessary. Yes, but people who don't know what we know don't know better. And it's HARD to find good enclosures. When I wanted a 3.5" drive array that could hold a dozen 1" disks on three SCSI busses in a space-efficient yet well-cooled manner, I went and built one in the shop, out of a bunch of angle irons :-) Cool design, and fits in 15"x8"x18".... dual 230W power supplies and a bunch of SCSI cable, and it's a very workable solution to the "cool storage problem". Much cheaper than a commercial solution that wouldn't provide adequate cooling or power ;-) > Yes, you could argue that people jamming multiple drives into PC > enclosures with wimpy power supplies will suffer, but then I'd never > suggest that people do so, either! If you're going to start using > lots of drives, get them their own home and their own nice little PS! I couldn't agree more. I have four power supplies powering two drive arrays on news.sol.net, and another one running the box itself. Much prefer overkill than underkill. A PC supply is only $40 for a decent one! ... Joe ------------------------------------------------------------------------------- Joe Greco - Systems Administrator jgreco@ns.sol.net Solaria Public Access UNIX - Milwaukee, WI 414/342-4847