This problem does not just affect Promise RAID cards. I have the same problem with Highpoint and Adaptec 1200A (also based on Highpoint) RAID cards. Unfortunately, Highpoint has indicated that they have no plans to release the source files for us to compile a compatible driver. Most vendors have 2.2.16 and the "official" RH 7.1 kernel 2.4.x versions of the drivers but NOT the 2.2.19 that SME is using. This really stuffs it up for us unfortunately.
No low cost hardware RAID solution for these installations (or move back to ESSG 4.1.2)
Kelvin