Extend Raid 10 volume

Hi is it possible to extend a raid 10 volume. I currently have 4 drives and would like to add 2 more (total of 6 drives) into the server. My system is running Hyper V server 2012.

Hardware is as follows:

• R2308IP4LHPC - INTEL IRON PASS SERVER SYSTEM
• RMS25CB080 - INTEL CONDADO 8-CHANNEL RAID CARD

Thanks

Pieter