Date: Sun, 26 Jun 2005 21:31:46 -0500 From: Nikolas Britton <nikolas.britton@gmail.com> To: freebsd-questions@freebsd.org, mark@gaiahost.coop Subject: Re: Best hardware to mirror IDE drives under FreeBSD? Message-ID: <ef10de9a05062619317876faa0@mail.gmail.com> In-Reply-To: <20050627012627.GB3088@pooh.hubcapconsulting.com> References: <200506261830.MAA29221@lariat.org> <42BF15DB.7030303@cs.tu-berlin.de> <20050627012627.GB3088@pooh.hubcapconsulting.com>
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On 6/26/05, Mark Bucciarelli <mark@gaiahost.coop> wrote: >=20 > On Sun, Jun 26, 2005 at 10:53:47PM +0200, Bj=F6rn K=F6nig wrote: >=20 > > Even most cheap ATA chipsets have hot-swap capabilities. >=20 > I didn't know hot swap was possible with software raid! >=20 > How can I tell if the ATA chipset on my system has hot-swap capability? >=20 It's an electrical issue not software/firmware/chipset. When you do this you run the risk of damaging the motherboard, the drive, and/or the power supply. There are ways you can mitigate this, for example a real hot-swap cage etc., but like I said, the ATA bus was never designed to do this. Short out the +12v and/or +5v to ground on your PSU and see what happens. Does it have a protection relay circuit?, you better hope so! It's easier then you think to accidentally short one of those two wires to gnd, I've done it a few times. Want to try your luck with 40 pins?
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