Date: Tue, 23 Jun 1998 11:38:28 -0600 (MDT) From: Doug Russell <drussell@saturn-tech.com> To: Karl Pielorz <kpielorz@tdx.co.uk> Cc: Bill Vermillion <bill@bilver.magicnet.net>, isp@FreeBSD.ORG Subject: Re: Recommended SCSI Drives Message-ID: <Pine.BSF.3.95.980623105602.21711A-100000@hobbes.saturn-tech.com> In-Reply-To: <358F6E0D.A6A09151@tdx.co.uk>
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> I'm also debating on whether it's a 'good' idea to spin them down and up > every once in a while... We did have a spate of drives that would run for > about 3-4 years, but would die if you spun them down (mostly _sounded_ like > bad motors rather than the old 'sticky' media syndrome (FreeBSD systems are > the worst offender for this, as they never crash badly / often enough to > ensure the machine is switched off every once in a while! <G>) Probably bad bearings somewhere... (ie. in the motor, as you suggest) The same kind of thing happens with those cheapo toy fans in most machines. On an extended run they'll be fine, but shut the machine off for a few minutes and power back up, and they start to make noises. One of these days I'm going to design my own fan that will actually last. Although, I suppose, there are good ones out there, you just have to find them. Speaking of cooling, lots of fans are the hot ticket. (get it? :) ) It might make the machine a little louder, but your components will love you for it. I just put the last couple in the server here in my office for a total of 6 fans (Counting the 1 CPU fan). 1 160 CFM monster in the front, and 4 standard 3.whatever-they-are inch on the back panel. Makes great flow from the front to the back, and really sucks air past the drives. (There are 10 exposed bays on the front, and I drill holes in the bottom of the case to mount 4 hard disks to the bottom. They get great cooling with the air flowing across the bottom and nothing within about 4" above them. Too bad I don't have a picture on the web site yet. :) Later...... <Doug> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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