I have 5 family members using Synology Photos (on a 4-bay Synology NAS) and it’s a great solution for us.

I don’t see myself going back to a cloud-based solution - this one is easy for me and secure.

I’ve got SHR running on my storage, and daily offsite backup to another family member’s house (protects against house fire etc for loss of 20yr+ of photos and videos).

Once you offload from your phone, you can pare down the photos remaining on the phone to whatever you want to be left.

Came here for this exact comment

APC work well. I have a 600-series connected to my NAS.

Important to pick one that has USB output to the computer (more expensive) - so that it can automatically command a system shutdown as its internal battery reaches low power conditions.