Recommendations for Industrial Grade GPU server for video surveillance

I am interested to know what are some good server specs for a video surveillance system running Object Detection, Object Segmenation and Tracking models for 100 cameras on local GPU servers. As for the GPU, I am reading that T4 is a good choice. I am aware that NVIDIA has a few partners who provide GPU servers (Virtual GPU Certified Servers | NVIDIA GRID). I would like some recommendations from those who have purchased from these partners for similar purposes.