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When I see these systems, I always remember this: War declared on world's growing e-waste crisis and so far it's not part of any TCO calculation. All computers can and should be produced to be upgradable.

That's true but these kind of proprietary systems can't be upgraded for future use and produce waste for no reason. Dell could easily produce these systems following microATX or mini-ITX standard. For OS, you can still reuse your Windows 7 or 8 license: You Can Still Get Windows 10 for Free With...

Don't support non-standard computer parts with your money. I own ATX tower cases older than 15 years. I've bought them second hand. They've seen many processor generations and mainboards and are still in good shape, ready for 11th Intel generation or AMD Zen 3. Building your own computer from...

Page 13: 1x 3,5" HDD or 2x 2,5" HDD (needs additional adapter), non-standard mainboard form factor & PSU - not recommended.

Maybe a too complex password, compare settings: Network --> Access Platform -> ONVIF -> Authentification = "On" System --> Account -> Onvif User --> check user & pass System --> Safety -> System Service -> ONVIF = "Enable"

RTSP stream using e.g. Media Player Classic - rtsp:/admin:yourpassword@x.x.x.x:554/cam/realmonitor?channel=1&subtype=0&unicast=true&proto=Onvif

BI is easy to use, comes with great UI3 web gui but like every VMS it has tons of options, so studying manual and this forum is a must. Your HP server is too weak to run it, maybe two cameras but it's not future-proof for more. The VMS itself can't do AI based motion detection and all cameras...

You don't need a PIR sensor, you need a VMS like Blue Iris to record 24/7 (to catch everything and/or to combine motion detection of cameras and VMS to catch most, also allows to combine alerting e.g. motion on cam A also triggers recording on cam B) and you need better cams like Dahua's 5442...

180° fisheye cams have "Close Focus Distance: 0.2 m (0.7 ft)": IPC-EW5541-AS

7442 has a bigger sensor and can do 50/60 fps: Review - Dahua IPC-HFW7442H-Z 4MP Ultra AI Varifocal Bullet Camera but I would wait a bit until more products with even bigger 1/1.2" sensor show up: DS-2CD2087G2-L(U)

You'll not get the same view in UI3, maybe @bp2008 (developer of UI3) can change this someday. About frame size, BI manual says: "By default, the group will be viewable via remote browser or app and its cameras will be arranged to fit into a rectangle roughly sizing each camera in half. You may...

Play with resolution, you can enter custom resolutions:

There is DS-2CD2H86G2-IZS but no Dahua, right.

1/2.8" and 8MP will never be "Starlight", it's more for daylight. ;)

No spec sheet but must be a OEM IPC-HDW3841T-ZAS, because of: 3840 × 2160 @(1–20 fps by default) 3840 × 2160 @(1–25/30 fps when AI function disabled) Upgrade for 5231 is 5442.

no, 1/2.8"@4MP will not work well in low light conditions, consider 5A425XA-HNR. Data sheets not always show reality and sometimes they simply have errors.

1831E/2831T-ZAS SOC wasn't a high-flyer: "...very often there is lost video for a second or 3 at time of motion detection. quite annoying." IPC-HFW1831E broken image It's Dahua's own SOC (processor=DH7200), developed for their car project. Now they use Hisilicon SOCs and I guess they are more...

Larger sensor needs a better lens = higher costs, higher resolution needs better SOC = higher costs. Any other manufacturer that gives away a 1/1.8" sensor 4MP cam for $150? From Axis you'll get the junction box and a (short) network cable for this price. What do we expect? $50 4k@60fps galaxy...

There are newer models available nowadays with up to three independent radios (2,4G + 5G + 5G) like Netgear EX8000.

See here: How to setup Dahua IVS with BlueIris?

try a port scanner to check for open network ports: PortScan

Big business: "Staff recommends that the City Council authorize a purchase order to Sensera Systems Inc. in the amount of $1,021,033.56 for the purchase of two hundred (200) solar powered, wireless video cameras, licensing, and related services for installation into the City’s CCTV system"...

It's 4G or Wifi. Most professional wifi gear is also protected against cheap wifi jammers plus this device has edge storage (built-in storage) for 40-days of recording. If I were the owner, I would be more concerned about this feature from data sheet: "One Person Installation in Under 20...

yes, 5k: SiteWatch PRO2, with PIR Motion Sensor, LED Lighting

W-10855M is a mobile CPU for notebooks, only 6 cores. W-1270 has only 8 cores. Fastest CPUs with Intel iGPU are: Intel Xeon W-1290P, 10C/20T, 3.70-5.30GHz Intel Core i9-10900K, 10C/20T, 3.70-5.30GHz Both are for socket 1200, identical CPUs, Xeon just has ECC memory support enabled. Real Xeon...

Contrast and sharpness is not good, especially in background. My chinese 1/1.8" HFW4833F-ZAS have a similar image. Only first 4-5 meters are really sharp. Additional IR illuminators help. It's much better with 5442/5842, better lenses I guess. "West Lawn" has bad bleeding.

Not all? What's different (networking, cam settings, firmware)?

Another way is to stick with VLC. Create a m3u8 file for each cam. It's a simple text file with extension m3u8 containing the address you're pasting to VLC now. content: #EXTM3U rtsp:/user:pass@x.x.x.x/abc

Bad idea, use a switch. Windows network stack takes too long to become ready. Dig through here: Dahua IPC EASY unbricking / recovery over TFTP

Good, but I think we found a bug: no alert list picture should not lead to an empty alert list, just an alert list without pictures.