Date: Fri, 2 Mar 2001 21:57:45 +0100 From: "Siegbert Baude" <Siegbert.Baude@gmx.de> To: "Riley J. McIntire" <rjmcintire@earthlink.net>, <chris@northernbrewer.com> Cc: "FreeBSD Questions" <freebsd-questions@freebsd.org> Subject: Re: Hot swap IDE device? Message-ID: <005f01c0a35b$6e953ec0$4011a8c0@wohnheim.uniulm.de> References: <NCBBLBILEPCHLFJAPIIPAEOIFFAA.rjmcintire@earthlink.net>
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Hi, > > Is there any way to get FreeBSD to add/remove an IDE device from a > > running system? > > > > I'm experimenting with a $15 removable IDE hard drive kit. I would > > ideally like to be able to power down the drive, remove it, insert > > a new drive (possibly a different manufacturer/capacity), power it > > up, and force FreeBSD to recognize the new IDE device. > > Is this possible? > > I assume I can swap identical drive models endlessly, and FreeBSD would > > be none the wiser. However, two years down the road, it will be impossible > > to replace a broken drive with the identical model. Artem Koutchine wrote: > This is a bad idea. IDE is not a plug-n-play (or to say > it right: HOT SWAP) bus. You might disconnect > a drive more or less safely, but reconnecting a drive into > a working system can cause all kinds of troubles. And it > has nothing to do with FreeBSD. It is related to > electric schematic and interface standards. If you need > hot swap try: SCSI, USB, FireWire??? drives. Artem is right (maybe with the exception that I don´t believe SCSI to be "hot swappable". Some disk arrays are, which are attached to a scsi bus as one device.) your kit is designed to make changing IDE disks easy WHEN YOUR COMPUTER IS POWERED OFF! If there will be such a thing you´re talking about for 15$: Tell me!. Then I want to have it, too. But I´m afraid the conception of IDE won´t allow this. What I said for SCSI may be possible: a disk array, which does this, plugged into IDE bus is imaginable, but for sure this will be not in the 15$ range! So before changing your disk power off your computer and follow the advice of some other guy to have the disk "no-auto" in fstab. Ciao Siegbert To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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