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Date: Mon, 10 Jun 2002 16:44:19 +0900
From: Koji Uchiyama <uchiyama@pp.iij4u.or.jp>
To: FreeBSD-users-jp@jp.FreeBSD.org
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$BFb;3$H?=$7$^$9(B

On Mon, 10 Jun 2002 16:05:05 +0900
takao@hirata.nuee.nagoya-u.ac.jp (Takao Ono) wrote:

> $B$3$3$N!V;v8NN(!W$C$F$J$s$G$7$g$&$+(B?
> # $B$C$F$$$&$+(B, $B;v8N$,B?$/$J$k$/$;$K2DMQ@-$,9b$/$J$k$C$F$N$,M}2r$G(B
> # $B$-$J$$(B.

$B$$$o$f$k(B RAS(RASIS) $B$K$*$$$F(B

    Reliability $B?.Mj@-$N;XI8$K$O(B
    $BJ?6Q8N>c4V3V(B MTBF ($B$^$?$O8N>cN((B = 1/MTBF) $B$rMQ$$$k(B

    Availability $B2DMQ@-$N;XI8$K$O(B
    $B2TF/N((B = MTBF/(MTBF+MTTR) $B$rMQ$$$k(B

    Serviceability $BJ]<i@-$N;XI8$K$O(B
    $BJ?6Q=$M};~4V(B MTTR ($B$^$?$O=$M}N((B 1/MTTR) $B$rMQ$$$k(B

$B$H;W$$$^$9$,!"(B

    $B;v8N(B($B8N>c(B)$B$,B?$$(B (MTBF $B$,C;$/$J$k(B) $B$G$"$C$F$b(B
    $B$8$e$&$V$s$9$P$d$/=$M}$G$-$k(B (MTTR $B$,C;$/$J$k(B) $B$N$J$i(B
    $B2TF/N($r9b$/$9$k$3$H$,$G$-$k(B

$B$H$$$&$3$H$G$O$J$$$G$7$g$&$+!)(B

--
Koji Uchiyama <uchiyama@pp.iij4u.or.jp>

