Madhu,
Building a two site cluster with two seperate storage arrays is possible
The only thing you have to take into account is that with a two node
cluster (any sort of clustering you will use, either ASM, HACMP (shared
devices) or GPFS) your cluster by itself will not be possible to cope
with all the failures by itself. This is the result of the fact that
when network failures occur no "third party" can choose which node
should survive. So a manual failover is the only solution. Only a third
site will give you enough "quorum" to provide an environment in which
automated failovers can be build.
Cheers,
Robert.
