From owner-freebsd-questions Sun Jul 9 21:51:36 2000 Delivered-To: freebsd-questions@freebsd.org Received: from wantadilla.lemis.com (wantadilla.lemis.com [192.109.197.80]) by hub.freebsd.org (Postfix) with ESMTP id C625037C4C8 for ; Sun, 9 Jul 2000 21:51:16 -0700 (PDT) (envelope-from grog@wantadilla.lemis.com) Received: (from grog@localhost) by wantadilla.lemis.com (8.9.3/8.9.3) id OAA18787; Mon, 10 Jul 2000 14:21:04 +0930 (CST) (envelope-from grog) Date: Mon, 10 Jul 2000 14:21:03 +0930 From: Greg Lehey To: ian j hart Cc: questions@FreeBSD.ORG Subject: Re: partition sizes vinum and ccd Message-ID: <20000710142103.C18656@wantadilla.lemis.com> References: <39691175.1B657EC2@freeloader.freeserve.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0pre2i In-Reply-To: <39691175.1B657EC2@freeloader.freeserve.co.uk> Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-418-838-708 WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Monday, 10 July 2000 at 0:57:41 +0100, ian j hart wrote: > Hello all. > > Background: I am the technician at a school in the UK. I have to provide > web browsing and email services before the start of the next academic > year. I figured I'd break it down into two parts. Build a local server. > Test during the first term while I build a firewall. Cross fingers and > hope it works. > > Hardware: This is what I have to work with. No discussion required here, > the budget is spent. > > AMD K6II-500 > 2x 18Gb SCSI hard disks > 256Mb RAM. > SCSI CDRW > Some other stuff... > > Software: (suggestions?) > Apache > imap-uw (if fixed) or qpopper? > fetchmail or SMTP forward on the firewall > > What I need to know is how best to partition the disks. I have no > idea how big the partitions need to be as there is no existing > server. Load will be maximum 150 Win95 clients, 1500 users. What > combination of vinum,ccd and swap will give me best > safety/performance? I've not used vinum before but as it's a new > machine I can always format and use *normal* partitions if it fries > my brain. The machine will double as cvs repository/buildserver off > peak. I recon that's 7Gb /usr plus 1Gb if I build release. The CDRW > will need chunks of 650Mb for spooling file server(NT) backups. Then > web space and mail for each user. > > I hope someone can help. Even a df from a similar system would be > better than nothing. What kind of tapes are you using for backup? It's best to ensure that a file system backup pretty well fills up a tape, but doesn't ever require more than one tape. If you have, say, a DDS-4 or DLT drive, you can back up the whole system on one tape. Apart from that consideration, make the file systems as large as possible. Use quotas to ensure that people don't overstep their mark. Vinum vs. ccd: You only need one. Vinum has more functionality and better failure recovery, so that's the one you should stick with. Since you're after safety (which I assume includes tolerance of disk failure), you should use volumes with two plexes. You'll get marginally better results from striped plexes, so your Vinum config would look like: drive 1 device /dev/da0h drive 2 device /dev/da1h volume everything plex org striped 275k sd len 17g drive 1 plex org striped 275k sd len 17g drive 2 Greg -- When replying to this message, please copy the original recipients. For more information, see http://www.lemis.com/questions.html Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message