From owner-doc-jp@jp.freebsd.org  Wed Feb 25 17:58:01 1998
Received: by jaz.jp.freebsd.org (8.8.8+3.0Wbeta7/8.7.3) id RAA09881
	Wed, 25 Feb 1998 17:58:01 +0900 (JST)
Received: by jaz.jp.freebsd.org (8.8.8+3.0Wbeta7/8.7.3) with ESMTP id RAA09876
	for <doc-jp@jp.freebsd.org>; Wed, 25 Feb 1998 17:57:57 +0900 (JST)
Received: from silvia.HIP.Berkeley.EDU (ala-ca34-52.ix.netcom.com [207.93.143.180]) by vader.cs.berkeley.edu (8.8.7/8.7.3) with ESMTP id AAA13937 for <doc-jp@jp.freebsd.org>; Wed, 25 Feb 1998 00:57:52 -0800 (PST)
Received: (from asami@localhost) by silvia.HIP.Berkeley.EDU (8.8.8/8.6.9) id AAA17696; Wed, 25 Feb 1998 00:57:48 -0800 (PST)
Date: Wed, 25 Feb 1998 00:57:48 -0800 (PST)
Message-Id: <199802250857.AAA17696@silvia.HIP.Berkeley.EDU>
To: doc-jp@jp.freebsd.org
In-reply-to: <19980223235544X.yoshiaki@kt.rim.or.jp> (message from Yoshiaki Uchikawa on Mon, 23 Feb 1998 23:55:44 +0900)
From: asami@freebsd.org (Satoshi Asami)
Reply-To: doc-jp@jp.freebsd.org
Precedence: bulk
X-Distribute: distribute [version 2.1 (Alpha) patchlevel=24]
X-Sequence: doc-jp 4393
Subject: [doc-jp 4393] Re: <handbook> scsihd.sgml
Errors-To: owner-doc-jp@jp.freebsd.org
Sender: owner-doc-jp@jp.freebsd.org

 * $B$&$A$+$o$G$9(B

$B@u8+!wCx<T$J$N$KLu$5$J$$E[(B $B$G$9!#(B

$B3'$5$s!"$I$&$b$"$j$,$H$&$4$6$$$^$7$?!#?tF|(B FreeBSD$B4X78$N%a!<%k$+$i1s$6(B
$B$+$C$F$$$?$N$G%U%)%*!<$,CY$l$F$9$_$^$;$s!#(B(_ _)

 *         Ultra $B$H(B Ultra-wide $B$N4V$K%1!<%V%k:GBgD9$N0c$$$O$"$j$^$;$s$,(B,
 * 	$B0l$D$N%P%9$K$?$/$5$s$N%G%P%$%9$r$D$J$2$h$&$H$9$k$H(B, $B$9$0$K(B
 * 	$B%P%9$r$&$^$/@0M}$7$F$d$i$J$1$l$P$J$i$J$$$H$$$&LdBj$,;}$A$"$,$j(B
 * 	$B$^$9(B.  $B$&$^$$@_7W$,$5$l$F$$$k%1!<%9$,$J$1$l$P(B 5, 6$BBf$N(B Ultra
 * 	SCSI $B%G%P%$%9$r(B 1$BK\$N%P%9$K@\B3$9$k$N$O4JC1$J$3$H$G$O$"$j$^$;(B
 * 	$B$s(B.

$B$3$l$O(B

	There is no
	difference in max cable length between Ultra and Ultra-wide;
	however, the more devices you have on the same bus, the sooner
	you will start having bus integrity problems.  Unless you have
	a well-designed disk enclosure, it is not easy to make more
	than 5 or 6 Ultra SCSI drives work on a single bus.

$B$N$H$3$m$@$H;W$&$s$G$9$,!"(B"enclosure"$B$O%G%#%9%/@lMQ$N!J(B8$B8DF~$j$H$+$N!K(B
$B%1!<%9$N$3$H$G!"!V%(%s%/%m!<%8%c!W$H$$$&0J30$KE,Ev$JLu8l$r;d$OCN$j$^$;(B
$B$s!#$"$H!"(B"bus integrity problems" $B$O%P%9$,EE5$E*$K40A4$G$J$$$3$H$K$h(B
$B$kLdBj!"$D$^$j?.9f$,$A$c$s$H5"$C$F$3$J$$$H$+%?%$%`%"%&%H$9$k$H$+$NLdBj(B
$B$r;X$7$F$$$^$9!#(B

$B$"$5$_(B
