Request for sample of raw data from Hikvision DVR

Hello,

I am wondering if someone can help me with obtaining a data sample from the HDD of Hikvision DVR, about 100Mb in length. What's on video is not important. Can be extracted with disk/hex editor or we can provide a tool. We are developing a DVR video recovery software and Hikvision DVRs are hard to come by in our part of the world.

Regards

Gregory