Software RAID is usually a term used for when you let the operating system sort out the RAID ( using disk manager in windows for example ) you can have two drives show up in windows and make them into a RAID array using windows software. hence software RAID.
Hardware RAID is usually when the syustem has a RAID controller card doing the RAID, you have two disks in and set them up in a sort of BIOS at boot up to make one container in the aray type you want and then the operating system only ever sees the one drive ( container )
so I suspect that the card is doing hardware RAID or it would be pretty useless.
I have a 160 GB mirror in my system using the on board hardware RAID along with a bunch of other disks for less important stuff
