I'm reaching out for guidance on architectural best practices when building NVRs. A little background: we are currently equipped with Dell 33 TB SATA RAID 5 / 4 GB RAM / Intel Xeon E5620 4 Core @ 2.4 GHz, and each NVR hosts between 30 to 60 IP cameras . The camera settings average about 7 FPS, 800 x 600, H.264, and a 768 bit rate. The vendor has moved away from requiring us to use their Dell NVRs, and they have released a hardware-agnostic version. We are beginning to build our own HP equivalents, and our enterprise standard for memory is 32 GB with 48 TB drives. One of the points of contention with the vendor is that they claim the amount of RAM on the box will not impact performance; however, we have crashed several of our recorders due to what appears to be memory issues. Secondly, I'm concerned that the Dell and/or our HP equivalent are not truly video-grade servers -- just standard application servers. Our server team did indicate that the vendor-provided Dells are nothing more than off-the-shelf machines which could be sufficient. I did find an article that references 6G SAS drives as a more appropriate hard drive choice for monitoring/recording/etc video; but I don't have much more than that in terms of best practices. Any assistance is greatly appreciated!