[CentOS] SMART and Dell PowerEdge 2950?

I have CentOS 5 installed on a few Dell PE2950 systems.    The SMART
daemon claims the drives included with the server do not support
SMART, which rather surprised me.

What, then, are my options for monitoring the health of the server
hard drives?  It would be nice to have some service running I could
email to myself on the status of each drive.

Thanks.

Scott