Re: Why have redo logs on separate disks?

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 Mon Nov 27 2000 - 16:32:26 CST