I really can't say, though, since I don't know why they create new subversions.
I know that subversions in WhiteBox Enterprise Linux (also from RHEL) are generally released just to enable more hardware, so I can say that newer subversions of RHEL will continue to work with DA.
I'm guess that CentOS 3.3 will work, but I certainly don't have the time to try it today .
It depends on the RAID card. The server we were building recently was using a very new and very high-end combination of hardware which Centos simply could not support.