Adding 2nd Hard Drive

Hi everyone.
I have an HP Proliant ML310G4 with a SmartArray controller card.

The system currently only has one Hard Drive (160GB).

How would I go about adding a second hard drive and run the 2 in RAID0 without loosing any data? Is this even possible?
Many Thanks

p.S. This trhead has been moevd from Disk to ProLiant Servers (ML,DL,SL). - Hp forum Moderator