getting a collection of these now DS-2CD2387G2-LSU/SL and the old DS-7632N-E2 NVR i have wont record at 8MP and i have found i have to dumb down the cameras for it to record properly.
i have several 4MP IPC-HDW5442TM-ASE dahua as well and few older 2MP ones but moving more towards 8MP now.
used bandwidth on my current one is around 35Mps it is reporting.
I can't find that NVR model (there is 7632NI-E2, no 7632N-E2).
But if it won't support 8MP it means it very old construction
First problem is that You have mix of HIK and Dahua cams. I don't known which brand is more popular or to which You want migrate.
But You if You choose HIK NVR, then Dahua cams will be dumb (no AI events from them on NVR).
If You choose Dahua NVR, then HIK cams will be dumb (no AI events from them).
If situation looks like most cams are from HIK, a few from Dahua and You want to buy more HIK - then choosing AcuSense / DeepInMind HIK NVR is a solution. If you have more Dahua or want to migrate to Dahua world - then Dahua WizMind NVR.
If you have the same brand cam as NVR - then You use AI event detection / perimeter protection from camera. If You have mixed brands of cam and NVR - then for this channel You must use LOCAL AI processing on NVR. This will give You feature parity - You will have AI events with human / car filtering on all cams (in mixed brand system).
AcuSense NVR (4 chanels of local perimeter protection)
Hikvision DS-7632NXI-I2/S 32-ch 1U AcuSense 4K NVR
www.hikvision.com
Hikvision 32-ch 1U AcuSense 4K NVR DS-7732NXI-I4/S
www.hikvision.com
DeepInMind NVR (much higher perimeter protection chanel limits - but it change in each of this models - check in spec!):
Hikvision iDS-7632NXI-M2/X 32-ch 1U 8K DeepinMind NVR
www.hikvision.com
Hikvision iDS-7732NXI-M4/X 32-ch 1.5U 8K DeepinMind NVR
www.hikvision.com
Hikvision iDS-9632NXI-M8/X 32-ch 2U 8K DeepinMind NVR
www.hikvision.com
Dahua WizSense (lower line - like AcuSense NVR, 4 channel perimiter protection):
Dahua WizMind (higher line, beast up to 32 channel perimeter protection)
32-channel 1080p self-adaptive decoding capability. Max. 1024/1024/800Mbps incoming/recording/outgoing bandwidth. Supports N+M cluster. Support Raid0/1/5/6/10. Drawer-like chassis design allows for HDD hot swapping. AI by recorder: 4-channel face detection and recognition; 8-channel metadata...
empiretech01.com
PS. If you have higher amount of cams and want to invest in a new NVR then You should check 4/8 disk models. If You put Yours 8MP ColorVu cams into full 8MP mode - please believe they will use a lot more bandwidth and disk storage. Above I put 2 and 4/8 disk models for comparison.