Date: Fri, 24 Aug 2001 15:18:38 -0700 From: "Kory Hamzeh" <kory@avatar.com> To: "Bryan-TheBS-Smith" <b.j.smith@ieee.org> Cc: <freebsd-hardware@FreeBSD.ORG> Subject: RE: Adding 3ware RAID AFTER FBSD has been installed Message-ID: <004b01c12cea$b968b120$14ce21c7@avatar.com> In-Reply-To: <3B86CFDB.25361848@ieee.org>
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Hi Bryan, > -----Original Message----- > From: me@linux-wlan.com [mailto:me@linux-wlan.com]On Behalf Of > Bryan-TheBS-Smith > Kory Hamzeh wrote: > > 1. Can a drive containing data be added to this controller > > and then have the drive mirror'ed on the second drive? > > I'm assuming not since there is blocking going on and sector > reservation. This is the "price you pay" when you go with a true > hardware ATA solution. You _could_ probably mirror your existing > drive if you went with one of those "trick BIOS" ATA-RAID > controllers (like HPT370, Promise or other card). > > > I asked this question from 3ware and they said they will > > get back to me. > > That's funny! I guess there _might_ be a way to "convert" it > on-the-fly, since you can boot the disk as "dumb" on the 3Ware card. They have a "drive repair" function in their bios & 3dm task. I *think* that is how you would do it. > > > The ARCO Raid controller is the only I know that work > > totally transparently because it sits in between the > > controller and the drive. It even comes with a floppy > > you can boot with to mirror one drive from another. It > > is the slowest of all of these controllers, so it is my > > last resort. > > The 3Ware is another hardware solution. They seem to have perfected > the RAID-0, 1, 0+1 (aka 10) performance, although RAID-5 write > performance is horrendous without a good amount of on-board cache > memory (plus they don't seem to have their RAID-5 firmware perfected > yet either). > Did you mean to say "3ware" is another solution or where you thinking about another controller? It seems that I can NOT add 3ware to an existing system. I don't think I can even run vinum at this point. Kory To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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