In regards to your inquiries, we have the following comments/suggestions:
1. "Does it mean there is a controller on the board?"
Yes, it is the Intel® P67 Express Platform Controller Hub (); see page 9 of the Technical Product Specification:
2. "Is it controlled through software?"
Yes, the Intel(R) Rapid Storage Technology [Intel(R) RST] take care of that:
3. "Is the [Intel(R) Desktop Board DP67BA] RAID-capable?"
Yes, it is RAID-capable; see the board model listed under the "Supported RAID Levels" section here: