Oracle-L: RE: High availability and upgrades

From: Paul Baumgartel <treegarden_at_yahoo.com>
Date: Thu, 10 Jul 2003 15:09:25 -0800
Message-ID: <F001.005C44F3.20030710150925@fatcity.com>

Matt, can you elaborate a bit? "Configure your two servers in a cluster" how: RAC, FailSafe (these are Windoze servers, unfortunately)?

"Third mirror" implies the two nodes share a disk cluster in which all active drives consist of three mirrored copies; when the third mirror is split off, the two nodes continue to run against two mirrored copies, correct?

Thanks!

Paul Baumgartel

Matthew Zito <mzito_at_gridapp.com> wrote: [snip]

> What about a storage-level solution? Either at the software (i.e.
> Veritas) or hardware (i.e. your big honkin' storage array) level,
> have a
> "third mirror" of your data. Configure your two servers in a cluster,
> then when you want to do separate testing, split off the mirror,
> detach
> the idle node from the cluster, run your tests against the third
> mirror,
> and then resync/rejoin the nodes. Basically every reasonable
> hardware
> vendor and every storage software vendor supports some notion of r/w
> point-in-time copies that are designed for just this purpose.
>

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Author: Paul Baumgartel
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Received on Thu Jul 10 2003 - 18:09:25 CDT