All my runtimes are backed up once a week to an external hard drive and once a month to another hard drive held in a safe.   This hard drive also carries an image of the C drive.

For file sychronisation I use Karen's Replicator.  I have used this for a number of years on a number of PCs, it is quick as it only backs up the changes each time.  I have had to use it for a restore and it worked without a hitch.

 

 

I use Poser 13 on Windows 11 - For Scene set up I use a Geekcom A5 -  Ryzen 9 5900HX, with 64 gig ram and 3 TB  storage, mini PC with final rendering done on normal sized desktop using an AMD Ryzen Threadipper 1950X CPU, Corsair Hydro H100i CPU cooler, 3XS EVGA GTX 1080i SC with 11g Ram, 4 X 16gig Corsair DDR4 Ram and a Corsair RM 100 PSU .   The desktop is in a remote location with rendering done via Queue Manager which gives me a clearer desktop and quieter computer room.