Date: Tue, 10 Nov 1998 09:32:06 +1030 From: Greg Lehey <grog@lemis.com> To: Bagnara Stefano <bago@datasail.it>, FreeBSD filesystems <freebsd-fs@FreeBSD.ORG> Subject: Re: RAIDing freebsd.... Message-ID: <19981110093206.Y499@freebie.lemis.com> In-Reply-To: <006c01be0bbf$76a42300$0f63b1c2@lust.datasail.it>; from Bagnara Stefano on Mon, Nov 09, 1998 at 10:00:56AM %2B0100 References: <006c01be0bbf$76a42300$0f63b1c2@lust.datasail.it>
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On Monday, 9 November 1998 at 10:00:56 +0100, Bagnara Stefano wrote: > This is the first time i get so many answer to a question in a mailing > list.... > many thanx to all... > > So let's sort the problems: > > 1. I need 8/10 gigs of useable space on the system and i'll try to get it > with software RAID: should be better to use 3 x 4gigs than 2 x 9 gigs (as my > original idea). After all your posts i concluded (sorry for my english) that > 3 x 4 gigs is less expensive and faster, but... is the software RAID > configuration the same? or with RAID3 it is more difficult than > RAID1? No software RAID-3 is available. Do you mean RAID-5? With RAID-5, even 3 disks is rather on the low side. 2 disks is too few: in this case, RAID-1 is a better option, but you lose 50% of the storage space. RAID-5 will lose one disk, so it's better to have a lot of disks. > 2. This is the first time i install FreeBSD. I used a lot linux before. Can > i set up the whole system with software RAID and get it to work anyway if > one disk fail? (as in HW RAID). Yes, with Vinum, but not with ccd. You need to reconfigure and reboot to recover from a ccd disk failure. > 3. Where can i find an hardware compatibility lists for RAID controllers? > i've read the Handbook but i only found classic SCSI cards. Any suggestion > about a specific controller? Currently DPT's the only game in town. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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