@selfhosted may be a good place to ask. Can run your own "cloud" photo backup on a computer so photos taken on phones can automatically be saved. Would also recommend a second drive at friend/family house so you can back-up off-site to follow the 3-2-1 rule (3 copies, 2 different types of storage, 1 offsite) for backups. For even better redundancy for drive failures you could run a NAS running multiple drives in RAID. Basically, RAID combines multiple physical drives into a single "logical" drive with different speed, capacity, and redundancy capability and the NAS allows you to access that over your local network or internet.