Re: Question about RAC

Hi Michael

They are two Fujitsu Primepower. Not sure about the model though. I will let you know when I get the details

Thanks

Alex

On 10/30/06, Michael Erwin <michael.erwin_at_hotsos.com> wrote:
>
> Hi Alex,
>
>
>
> Logical or Physical partitioning (L-Pars) a single host environment to
> support multiple RAC instances is logical as long as the host server can
> provide an extreme fault tolerance they need for HA, specifically think Sun
> 25k, HP SuperDome, IBM p590 class systems. This strategy allows customers to
> grow & migrate slightly easier than building a 2 node, then adding 2 nodes
> in the future. In these environments, each partition acts & is managed as
> you would multiple hosts.
>
>
>
> Many times this is the case with customers that outsourced IT environment
> management, i.e. Perot, EDS, IBM, where the customer pays for physical
> system, not L-Pars. In the past I have seen customers buy the biggest boxes
> on the planet, and then l-par them into 2 & 4 CPU host boxes since it saved
> them on the outsourced support, in effect spending $5million, so they
> wouldn't have to spend an additional $300k per month to support 6 smaller
> hosts. Then they could change the partition configuration as needed or
> warranted.
>
>
>
> Having said all of that, what is still illogical is for customers to put
> multiple related instances on the same physical partition of hosts, i.e.
> Reporting/OLAP Instance along with the OLTP Instance on the same physical
> CPU/Memory/Bus partition or host.
>
>
>
> Hopefully, your customer isn't considering the use of VMware or Parallel
> to partition a single small i86 host for production environments.
>
>
>
>
> Michael Erwin
> Hotsos Enterprises, Ltd.
> http://www.hotsos.com
> Hotsos Symposium 2007 / March 4-8
> Visit www.hotsos.com for curriculum and schedule details...
>
> ________________________________
>
> From: oracle-l-bounce_at_freelists.org on behalf of amonte
> Sent: Mon 10/30/2006 1:24 PM
> To: oracle-l_at_freelists.org
> Subject: Question about RAC
>
>
> Hi all
>
> I have a question about RAC.
>
> I have implemented a few RAC on a couple of customers. I have always
> worked with two nodes and a single database, i.e 2 servers and a common
> database in a shared storage.
>
> I have a customer who wants to use 2 servers to implement 4 RACs, i.ehacing 4 instances in each server. Has anyone done this sort of
> implemntation? I am not sure if this is logical or ilogical :-)
>
>
> Thanks
>
> Alex
>
>
>

--
http://www.freelists.org/webpage/oracle-l