Date: Wed, 5 Sep 2001 08:42:45 +0930 From: Greg Lehey <grog@FreeBSD.org> To: Darryl Okahata <darrylo@soco.agilent.com> Cc: FreeBSD-Stable <stable@FreeBSD.ORG> Subject: Vinum vs. hardware RAID (was: RAID5) Message-ID: <20010905084245.H85816@wantadilla.lemis.com> In-Reply-To: <200109041749.KAA12474@mina.soco.agilent.com>; from darrylo@soco.agilent.com on Tue, Sep 04, 2001 at 10:49:31AM -0700 References: <20010903142145.K10812-100000@topperwein.dyndns.org> <200109041749.KAA12474@mina.soco.agilent.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tuesday, 4 September 2001 at 10:49:31 -0700, Darryl Okahata wrote: > Chris BeHanna <behanna@zbzoom.net> wrote: > >> AFAIK, there are no IDE RAID cards that support RAID-5. You are > > The 3ware cards support RAID5, although the performance is > supposedly not very good. > >> Or you could use vinum(8) and use whatever IDE controller you >> have, and whatever RAID configuration that you want. Note, however > > I used to use vinum, but I'm now using a 3ware controller. It's > *SOOO* nice to have something that's easy to set up, yet "just works". > > My issues with vinum are: > > [ Note: it's been a year or two since I've used vinum, and so the > following may be out-of-date. Corrections appreciated. ] > > * Once set up, vinum works well, but it takes a lot of hard reading to > set up. The actual work itself is not hard, mind you, but it's > difficult to figure out what you need to put into the config file. I've added sample configs to the man page. People still have trouble, but none of them seem to have read that section of the man page. > It's *SO* much easier to configure the 3ware controller .... Probably also more restricted, isn't it? > * Vinum is not part of the GENERIC kernel. This is not really relevant. > I had /usr on a vinum-controlled partition, and upgrading FreeBSD > via CDs was a royal pain. I basically had to do the upgrade to > the root drive (moving /usr out of the way, rebuild the kernel > with vinum, reboot, and then copy/move the contents of /usr into > the vinum-controlled /usr -- bleah). > > [ Today, I should be able to kldload vinum, but I don't think I can do > this at install time from the CDROM, and so I'd still have to play > games with /usr. ] Yes, currently installing on Vinum is a pain. But vinum(8) loads the kld automatically, and I suspect that you should be able to load it during the installation process. The problem is that sysinstall doesn't know about Vinum. > * (This may have changed.) There is no documentation on how to do > disaster recovery with vinum. The procedure is (roughly) documented > with 3ware (although I should, but have not, admittedly, tested > it). It's (roughly) documented with Vinum now as well. Greg -- See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20010905084245.H85816>