Re: Why have redo logs on separate disks?

To reduce Disk I/O as compare to having all log files on the same disk ? Isn't it better to have them on separate disk ?

"Van Messner" <vmessner_at_bestweb.net> wrote in message news:_hBU5.56$TO.3829_at_newshog.newsread.com...
> The main reason to mirror redo logs is for safety. You wouldn't want to
> lose any. But if your current mirroring systems provides safety and
 allows
> you to get at redo logs whenever you need them, you're probably OK.
>
> Van
>
>
> "Niklas Danielsson" <niklas.danielsson_at_eget.fi> wrote in message
> news:3A22539A.91DC2817_at_eget.fi...
> > Hello every one!
> >
> > I have a question regarding redo logs.
> >
> > We use a SUN solaris cluster with mirrored disks and today all redo logs
> > reside on one disk. There are only one log file per "group".
> >
> > My question is, what would I gain in safety by spreading the redo logs
> > on more disks?
> >
> > As I are told, every disk are mirrored and then the mirrored disks are
> > mirrored to the other node in the cluster.
> >
> > So, I can't see what I would gain by spreading the logs on more disks,
> > other than performance.
> >
> > Where can I find literature regarding this type of questions?
> >
> > Grateful for answers,
> >
> > Niklas (niklas.danielsson_at_eget.fi)
> >
>
>
Received on Sat Dec 02 2000 - 23:23:34 CST