BUT would it be required for the NVR/PC?
By default over the years here have upgraded older home network switches to 24 port Gb managed switches. A separate switch for just the cams will take the traffic off of the main switch. VLANs can separate traffic but not change the ding on the back plane of the switch. Managed Gb and managed POE switches are reasonably priced these days. My older Speco domes are fading a bit these days. They are heavier (aluminium metal) versus plastic.
It is a PITA to adjust a camera on a ladder. If need be here removed the camera and adjusted it manually. Typically though they are pre adjusted and focused. Having digital to analogue lens adjustments are a good to have feature.
Here utilize bullet and dome cameras. The 2nd floor eaves are about 1.5 feet of overhang?. It is easier for me to use a bullet as there is wood trim (on brick) on the eave and the bullet cam is attached to the wood trim. Domes are attached to boxes. Domes do look nicer than bullet cams. Here I wouldn't hang a dome on the aluminum overhang (eaves). I used one of those fiberglass wire pulllers (look like fishing poles) from the outside in to the attic and connected the cat5e wire to the end of the fiberglass pole and pulled it back out. Still a PITA to do while standing on the top of the ladder. Use a tool belt and take all your tools up with you. I used my cell phone wireless to adjust the position of the camera. After a bit you get comfortable working on the top of the ladder. Check for any little wasps nests under the eave that can cause you some issues. (I just removed them before doing any work up there). Many many years ago my first IP HD camera was in a large bullet style housing (old style analog housing). It was so big that birds used it as a perch and hangout and totally covered it with their droppings (lens though was OK cuz it was under a hood of sorts). A dome stays cleaner longer. A spider / spider web and food trappings can cause you grief.
For a dome I would suggest a base / box. Users here have built a wood base over the aluminum eave. There are dome hangers too.
Utilize also sun /snow exposed domes. The good ones do not deteriorate from the sun; the bad ones do. > 10 year old Optex combos still look new.
Look at the
IP ratings of the cams.
IP = ingress protection
#1 digit = solids protection
#2 digit = liquids protection
Ingress Protection (IP) and what it means
The IP Code (or
International Protection Rating, sometimes also interpreted as
Ingress Protection Rating*) consists of the letters IP followed by two digits and an optional letter. As defined in international standard IEC 60529, it classifies the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in electrical enclosures. The standard aims to provide users more detailed information than vague marketing terms such as waterproof.
The digits (characteristic numerals) indicate conformity with the conditions summarized in the tables below. For example, an electrical socket rated IP22 is protected against insertion of fingers and will not be damaged or become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. IP22 or 2X are typical minimum requirements for the design of electrical accessories for indoor use.
