Thank you!! really appreciated. I'm currently connecting 3 cams but will be added 2 or so more at some point (Once i have enough money and fix my infrastructure with BI etc.)Mobile push like emails? I have it setup to send emails through Bi and works nicely. Or setup the BI app and a VPN and that will get you alerts on your phone.
Optiplex 7040 has 1 3.5 bay or EliteDesk 800 G4 SFF has 2 3.5 bays for HDD and if you wait they can be had on eBay for $390-450 - i5-8500 model:
HP EliteDesk 800 G4 (240GB SSD, Intel Core i5 8th Gen., 3.0GHz, 8GB Ram) SFF | eBay
You would need a POE switch - how many cams are you hooking up? You can make it more secure by having 2 NIC and placing cams on separate NIC to avoid cams connecting to the internet:
Dual NIC setup on your Blue Iris Machine
by Push notifications i mean event alerts on mobile (emails are too slow for me and the event is gone by the time they are received - i like to know when someone has entered my property at that moment). I currently have the gDmss plus and vpn setup - even if i'm not connected to the vpn i will get push notifications for events popup, i can then connect to VPN and view the video or pictures of the event.
I will look out for this pcs, thank you so much for the help again!