Date: Tue, 13 Apr 1999 22:54:59 +0200 (CEST) From: Wilko Bulte <wilko@yedi.iaf.nl> To: remy@synx.com Cc: ken@plutotech.com, freebsd-scsi@FreeBSD.ORG Subject: Re: Huge SCSI configs Message-ID: <199904132054.WAA01437@yedi.iaf.nl> In-Reply-To: <199904131722.TAA36868@rt2.synx.com> from Remy Nonnenmacher at "Apr 13, 1999 7:22:19 pm"
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As Remy Nonnenmacher wrote ... > On 13 Apr, Kenneth D. Merry wrote: > >> .... > >> OK. Sorry for this late (but ever unanswered question) : what are the > >> known limits in term of SCSI chains, number and size of disks and sizes > >> of filesystems ? Anyone ? > > > > Aww, come on, you can easily find out the SCSI stuff anywhere on the web. > > For Wide SCSI, you can have up to 15 devices on one chain. (SCSI IDs 0 > > through 15, with 7 reserved for the controller) With Ultra2 LVD, you can > > have cable lengths of up to 12 meters. > > > > Oops, lacked precision "under FreeBSD" !!. (I already proposed building > a MAX config (15*2*15*50G) but they had me stop by knocking my head ;). > No, seriously, i wouldn't like to find myself running honking into a > wall just for not having asked. > > > There's no inherent limit on disk size, but you may want to talk to Matt > > Jacob and Matt Dillon about the stability of very large filesystems. I once built a 450Gb (or close to that) filesystem on a DEC nee Compaq HSZ80 raidcontroller hooked up to an Adaptec 2944UW. Worked fine, took a while to build on a P90 with 2.2.6 on it. I ran out of disks before I could try CCDing a couple of these together ;-) Groeten / Cheers, Wilko _ ______________________________________________________________________ | / o / / _ Arnhem, The Netherlands |/|/ / / /( (_) Bulte WWW : http://www.tcja.nl _______________________ Powered by FreeBSD ___ http://www.freebsd.org _____ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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