I have a Dahua NVR and
BlueIris. I sorta use the Blue Iris like a NAS. I like the Dahua NVR for 24hr recording of all cameras. BI also will do that with sub stream going to mainstream depending on triggers....and if i'm wrong on that it's because I was so much more familuar with the Dahua NVR and also never have time between having fun to really go into it like in my younger days....which were years ago....haha
A good home alarm sys. A camera sys thats set up with good equipment and you can just them work with very little maint or worry.
Good luck. Plenty of good advice on this forum..............imho!