SME7 uses software raid regardless of the number of disks used at the time of setup (I know raid sounds odd on a single disk).
This use of raid from the outset allows for additional disks to be added to a machine after the inital build, without the need for a fresh install.
Maybe this is why you are seeing what you are seeing.
You corrctly state ext3 is used as the file system, on software raid.
Do a search for adding adding additional disks, also LVM.
I don't think the system will automatically use the 2nd swap
Dave