From owner-FreeBSD-users-jp@jp.freebsd.org  Tue Aug 11 17:39:59 1998
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Message-Id: <19980811173956H.simokawa@sat.t.u-tokyo.ac.jp>
Date: Tue, 11 Aug 1998 17:39:56 +0900
From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
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Subject: [FreeBSD-users-jp 31691] Re: SCSI RAID
Errors-To: owner-FreeBSD-users-jp@jp.freebsd.org
Sender: owner-FreeBSD-users-jp@jp.freebsd.org

$B2<@n$G$9(B.

aki> > $BK\Ev$O(BSCSI$B$8$c$J$$$s$G$9$,(B, $B0l1~(BSCSI$B$K8+$($kNc$H$7$F(B,
aki> > dpt0 waiting for scsi devices to settle
aki> > (dpt0:0:0): "DPT RAID-5 07L0" type 0 fixed SCSI 2
aki> > sd0(dpt0:0:0): Direct-Access 61008MB (124946304 512 byte sectors)
aki> > 61GB$B8+$($^$9(B.
aki> 
aki> $B$O$$$O$$(B $B$7$D$b!<$s!#$3$N(B dpt$B$N(B RAID$B%+!<%I$C$F(B
aki> $B$$$/$i$/$i$$$7$F(B
aki> $B$I$3$GGc$($k$s$G$7$g$&$+!)(B
aki> 
aki> $BEz$($i$l$kItJ,$@$1(B $B65$($F$/$@$5$$!#(B

SCSI 2channel $B$N$d$D$H(B 3 channel$B$N$d$D$r;H$C$F$^$9$,(B,
$B$@$$$?$$F|K\1_$G(B20$BK|$0$i$$$7$^$7$?(B. 
$B=PF~$j$N6H<T$K(B, US$B$+$i0z$$$F$b$i$$$^$7$?(B.
PCI-to-SCSI$B$N(BRAID controller$B$H$7$F$O9b$$ItN`$G$9$M(B.

CPU$B$O(B68040$B$G(B, $B$=$&=hM}G=NO$,9b$$$o$1$G$O$J$$$N$G(B,
striping$B$7$F(Bsequential write$B$N(Bspeed$B$O(Bccd$B$H$=$&Bg:9$J$$$h$&$J5$$,$7$^$9(B.
$B$?$@(B, cache memory$B$,$"$k$N$G(B, random access$B$OB.$/8+$($^$9(B.

$B$?$@0BA4@-$K4X$7$F$O$h$/$o$+$j$^$;$s(B.

freebsd-current $B$H$+$G$b(B, mirror $B$ONI$$$,(BRAID5$B$8$c$"(Btrouble$B;~$K(B
$B>e<j$/I|5l$G$-$J$$$H$+(B, $BIT5H$JOC$r$A$i$[$i8+$+$1$^$7$?$,(B,
$B3NG'$7$J$$$^$^(B, $B<B@oEjF~$7$F$7$^$C$F$$$^$9(B.

$B$$$^$N$H$3$m(B, raid$B$N:F9=@.$H$+(BFreeBSD$B$+$i;H$($J$$$N$G(B, 
SCSI-to-SCSI$B$h$j$b;H$$Fq$$$+$b(B...
$B!t(B-current$B$@$C$?$i$I$&$K$+$J$C$F$k$N$+$J(B...

/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: finger -l simokawa@sat.t.u-tokyo.ac.jp
