I'm gearing up for somewhere around/upto 6 Dahua 4 MP cameras - nothing crazy. Would run BI on the computer with AI software.
I also have a Synology DS920+ but after some reading, I've concluded that it makes more sense not to store any of the video recording on it and instead store it all on the BI computer. Imported clips can be exported to the Synology NAS.
I also thought about the BI computer multitasking and running Plex and/or Home Assistant but it sounds like everyone recommends the BI computer be solely for BI. (Currently have Plex on the Synology NAS and Home Assistant on a Raspberry Pi - no glaring problems).
With that in mind, the computer I buy should likely have an SSD for the OS and BI software and HDD (or I can shuck and install one) for video recording.
Thoughts on this deal?
Dell Inspiron 3880 Desktop
Intel i5-10400
1TB HDD, 256GB SSD (I'd need to swap out the HDD for larger)
12GB RAM
Win10 Home (would likely find a cheap Pro license somewhere)
Certified refurbished by Dell. 2 year warranty.
$403
On the other hand, significantly cheaper, I saw what seems to be a great deal for:
Used Dell OptiPlex 3070: 9th Gen Core i5, 8GB RAM and 128GB SSD. $200. But this is the micro form factor - I'm not sure I can add an HDD to that, and if I can't, that would defeat the purpose.
I also have a Synology DS920+ but after some reading, I've concluded that it makes more sense not to store any of the video recording on it and instead store it all on the BI computer. Imported clips can be exported to the Synology NAS.
I also thought about the BI computer multitasking and running Plex and/or Home Assistant but it sounds like everyone recommends the BI computer be solely for BI. (Currently have Plex on the Synology NAS and Home Assistant on a Raspberry Pi - no glaring problems).
With that in mind, the computer I buy should likely have an SSD for the OS and BI software and HDD (or I can shuck and install one) for video recording.
Thoughts on this deal?

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Dell Inspiron 3880 Desktop
Intel i5-10400
1TB HDD, 256GB SSD (I'd need to swap out the HDD for larger)
12GB RAM
Win10 Home (would likely find a cheap Pro license somewhere)
Certified refurbished by Dell. 2 year warranty.
$403
On the other hand, significantly cheaper, I saw what seems to be a great deal for:
Used Dell OptiPlex 3070: 9th Gen Core i5, 8GB RAM and 128GB SSD. $200. But this is the micro form factor - I'm not sure I can add an HDD to that, and if I can't, that would defeat the purpose.
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