what is the correct status(best? or required?) for asyncdsk.

 hi..
we are plan to async hp 11.23 U ia64 and oracle 9208-64bit.

Could you teach us,
what is the correct status(best? or required?) for asyncdsk.

"
# kcmodule -a | grep async
asyncdsk static best
#
"

or

"
# kcmodule -a | grep async
asyncdsk static required
#
"

please reply to me noh019@naver.com...

Thanks ...