Thanks all for your kind responses. My case is:
Our apps run on Intel 1530 server, because Intel won't produce it any more, so in the future our apps must be switched to another kind of server. so before we finally decide to ship our apps with the new server, we are plan to do some test on the new server,
1. the OS is compatible with the server. that is we want to make sure the OS release can run stably on the server. This is what I say stability of the system. (BTW, we are going to use RHEL 5.8)
2. in addition, we also want to do some stress test. like stress test on CPU, I/O, memory, network, filesystem.
I know some tools to do these things, such as the LTP (Linux test project), stress, Bonnie++. But I did not use it before, I know these just as what they are separately, I mean I need to make test plan from the systematic level.
I don't know if I put it clear, my English is not good ^_^. Thanks everyone!