Date: Wed, 17 Apr 2002 08:01:14 -0600 From: Scott Long <scott_long@btc.adaptec.com> To: Vallo Kallaste <kalts@estpak.ee> Cc: freebsd-stable@freebsd.org, scottl@freebsd.org Subject: Re: RAID spanning over two 2400A's supported? Message-ID: <20020417140113.GB85801@hollin.btc.adaptec.com> In-Reply-To: <20020417075728.GA94009@myhakas.estpak.ee> References: <20020417075728.GA94009@myhakas.estpak.ee>
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On Wed, Apr 17, 2002 at 10:57:28AM +0300, Vallo Kallaste wrote: > Hi > > We're considering Adaptec 2400A's for new server. Will the asr(4) > driver support more than one controller and RAID spanning over two > controllers? Our final goal is 8 disk RAID-5 array, not expecting > great I/O but large storage area. > I guess it's possible to concat or stripe the two RAID-5 arrays with > vinum in case spanning is not supported? Every bit of advice will be > welcome! > > Thanks > -- > > Vallo Kallaste > kalts@estpak.ee Hi! No, the 2400A, nor any Adaptec RAID card, can create an array that spans more than one controller. Vinum is a possible solution, but a bit of overkill. What you might try is creating two 4 disk RAID5 arrays, and striping them with the ccd driver. You'll wind up effectively with a RAID 0/5 array, and the ccd driver is pretty thin and fast. Hope this helps! Scott To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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