Hardware clustering solutions

We're looking at a new server configuration and disaster recovery requirements specify that we have duplicate servers located in separate buildings on our campus. Currently, we're running an Oracle standby database to backup our production system. Given that we will have two of whichever servers we go with next, I'm exploring the cost and benefits of clustering solutions from HP, IBM, and Sun. We're thinking of consolidating our Oracle application and database servers on the two new servers and using the native clustering solution to provide automatic fail-over for these servers. I know someone using IBM's HACMP software who is very pleased and that sounds like a good possibility, but we're keeping our server decision open at the moment, so I want to look at what each of these vendors offers. Anyone out there with experience on any of these clustering solutions in an Oracle environment? Good experiences? Bad experiences?

Thanks,

Glenn Stauffer

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