submirror 与 one-way mirror 的问题

sorlo

submirror 和 one-way mirror 的意思是什么?

我看 sun 的文档看不明白, submirror 就是某个 partition 的 mirror 吗?
one-way mirror 又是什么?

以下是节录 Sybex Solaris 9 的 Study Guide
A one-way mirror would contain one submirror, but does not provide any data redundancy (however, you typically start the creation of a mirrored volume by creating one submirror-the volume that has the data-and then adding a second submirror for redundancy). For practical purposes, a two-way mirror (one that contains two submirrors) is sufficient for fault tolerance. By creating a three-way mirror, you can bring one submirror offline for backup purposes while retaining your online fault tolerance.

为什么 one-way mirror 不能提供 data redundancy?

Barrfee

one-way 仅仅是一面镜子，需要2面才能做到冗余。你可以把submirror暂时理解为单盘

filtercai

我的理解：
               －－－ sub mirror
mirror ------＋－－－ sub mirror


one-way mirror --- sub mirror

不知道对不？大家指正哈

孤城

差不多吧

sorlo

清楚了, 受教了

Barrfee

原帖由 孤城 于 2006-8-9 23:27 发表
差不多吧

en

susbin

"submirror 和 one-way mirror 的意思是什么?"

sub-mirror:   一个镜像的分盘或子盘。
one-way mirror:  联上了一个子盘的镜像

常用的有 two-way mirror,  three-way mirror.