Yes. I don't write the s/w but I constantly work on, maintain, & service the h/w at the TV station where I work.
The raid controller and embedded software for handling file services is already in place on the standalone. The DVR is simply going to id the disk/vloume(s), initialize the volume and read/write data. How that gets striped to the drives and parity blocks written is done by the raid controller in the standalone not by the DVR.