Date: Wed, 22 Oct 2003 00:12:54 +0200 From: Thomas Spreng <spreng@socket.ch> To: freebsd-questions@freebsd.org Cc: chris@infinitemonkeys.org.uk Subject: Re: ATA mirroring solution required Message-ID: <20031021221254.GA36459@rock.stable.ch> In-Reply-To: <1066772855.4964.13.camel@shodan.internal> References: <1066772855.4964.13.camel@shodan.internal>
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hello, On Tue, Oct 21, 2003 at 10:47:36PM +0100, Chris Smith wrote: > Hi, > > Got a bit of a sticky situation. I have a bog standard Compaq AP230 > workstation with two IDE channels and 3 devices so far (two CDROM > devices and a hard disk). I want to add a second disk as a software > RAID1 mirror of the primary disk. I know how to do this in FreeBSD so > thats not a problem - the hardware side is. > > The only available IDE port I have would be shared with the existing > hard disk i.e two hard disks in RAID1 on the primary IDE chain. AFAIK > this is bad for performance reasons. yes you are right. Its very recommended to have only one disk per IDE/ATA channel since it can only deal with one request to one device at the time. > Drives are both Seagate 7200rpm 40Gb ATA100 and the controller supports > ATA100 also. Running 4.8-STABLE. > > Where do I go? > > I was looking for a secondary controller to give each drive it's own > channel on the controller (ie a promise/HPT one) but have no experience > with these under FreeBSD. Can someone recommend one if possible that > works flawlessly or an alternative solution? I have a very similar setup with a vinum raid, using 4 drives on 2 Promise ATA100 (the cheapest one) controllers. They work flawless. Just check the hardware notes on freebsd.org. There are several IDE/ATA controllers that are supported under 4.8-STABLE. > Solutions must be cheap i.e under 50 UKP as the wife will kill me for > spending any more ;-) > > Cheers all cheers, tom
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