*BSD News Article 40920


Return to BSD News archive

Xref: sserve comp.os.386bsd.misc:4843 comp.os.linux.misc:33445
Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!bunyip.cc.uq.oz.au!munnari.oz.au!constellation!bubba.ucc.okstate.edu!newsfeed.ksu.ksu.edu!moe.ksu.ksu.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!Germany.EU.net!krabat!leo
From: leo@krabat.marco.de (Matthias Pfaller)
Newsgroups: comp.os.386bsd.misc,comp.os.linux.misc
Subject: Re: Limits on Linux, FreeBSD and NetBSD
Message-ID: <4455@krabat.marco.de>
Date: 13 Jan 95 12:43:23 GMT
References: <pwdD25Htq.58A@netcom.com> <D26603.FzH@park.uvsc.edu> <DFR.95Jan12121409@trout.render.com>
Followup-To: comp.os.386bsd.misc,comp.os.linux.misc
Organization: marco GmbH, D-85221 Dachau
Lines: 27
X-Newsreader: TIN [version 1.2 PL2]

Doug Rabson (dfr@render.com) wrote:
> In article <D26603.FzH@park.uvsc.edu> Terry Lambert <terry@cs.weber.edu> writes:
> > pwd@netcom.com (Philip W. Dalrymple III) wrote:
> > ] [removed to stop my news server from moaning]
> > 
> > The MAX disk size on SCSI is fixed; if you don't like it, you'll
> > have to discover a standard other than SCSI -- actually, I think
> > the 8G limit of SCSI isn't surpassed by anything on a PC, but I
> > could be wrong (correct me, correct me!).

> I friend of mine was telling me about a 9G Seagate drive he was
> testing but I guess that is 9G unformatted, taking it down to less
> than 8G formatted.  The fact that drives this size exists must mean
> that >8G drives could be built sometime soon.  Do any of the different
> SCSI flavours (fast, wide, wider, tall, etc...) support larger drives?

Even with 24 bit block addresses (the 10 byte read allows 32 bit
block addresses) you can go up to 16gb when using a block size of 1k.
When using ufs it should be no problem to use disks with a sector size
of 1k. If that's not enough or you are forced to use 512b blocks for
some strange reason you still can use the 10 byte read command. This
should allow disks as large as 2048gb...

	Matthias
-- 
leo@marco.de		in real life: Matthias Pfaller
..!unido!marco!leo	marco GmbH, 85221 Dachau	tel: +49 8131 516142