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Xref: sserve comp.os.386bsd.misc:4833 comp.os.linux.misc:33411 Newsgroups: comp.os.386bsd.misc,comp.os.linux.misc Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!yarrina.connect.com.au!news.mira.net.au!daemon.apana.org.au!otis.apana.org.au!serval.net.wsu.edu!netnews.nwnet.net!oracle.pnl.gov!osi-east2.es.net!lll-winken.llnl.gov!uwm.edu!math.ohio-state.edu!magnus.acs.ohio-state.edu!csn!news!mbarkah From: mbarkah@slate.mines.colorado.edu (Ade Barkah) Subject: Re: Limits on Linux, FreeBSD and NetBSD Message-ID: <1995Jan10.073050.25392@slate.mines.colorado.edu> Date: Tue, 10 Jan 1995 07:30:50 GMT References: <pwdD25Htq.58A@netcom.com> <D26603.FzH@park.uvsc.edu> Organization: Colorado School of Mines X-Newsreader: TIN [version 1.2 PL1] Followup-To: comp.os.386bsd.misc,comp.os.linux.misc Lines: 37 Terry Lambert (terry@cs.weber.edu) wrote: : pwd@netcom.com (Philip W. Dalrymple III) wrote: : ] We just ran into a limit on Interactive Unix and I would like to know : ] what these limits on Linux, FreeBSD and NetBSD for Intel Systems are: : ] : ] Max number of I nodes per file system (unsigned int on Interactive) : ] Max Size of any one file system (about 2000 Meg on Interactive) : ] Max number of disks On the system : ] Max hardware size (SCSI) of any one disk. : The number of disks on the system, for SCSI disks, is related to : the number of controllers you are willing to purchase, the number : of free interrupts you can give to them, and the number of LUN's : supported for each of the 7 available non-controller targets on : each bus. : This, in turn, is determined by your LUN demuxxing hardware that : you buy, and how willing you are to have one device inaccessable : while another device is in use on the same target but a different : LUN. : If you're willing to accept some delays, you can have a *very* large : number of devices on a machine. Well, you can have 8 controllers per SCSI bus, but one of them will be the host adapter itself, so you can have up to 7 "free" controllers. You can put 8 SCSI devices per controller, so you can have 56 SCSI devices per host adapter. Now put two host adapters in your machine's bus and you may have up to 112 SCSI devices (limited to 14 different types.) You'd probably break some software somewhere. =) -Ade Barkah -- Head of Development Renaissance Knowledge Systems Englewood, Colorado