Okay, here’s what I do… mostly. Yeah, yeah, sometimes I fall behind.
Anything I have on a peecee that I don’t want to potentially evaporate into the æther in case the drive takes a dump, or Windows starts acting as the malware it really is, I stick onto an external usb drive, as my first line of defense.
After “cleaning” the data (renaming consistently, getting rid of crapfiles, etc.), I’ll dump the contents to a NAS.
You can have 2 wifi routers, one for everyday browsing and connecting your “in-house network” to wifi and the outside world, etc., and another for data-only use. NASes connected to that 2nd router, keep them and the router powered up only when you want to put/get something to that 2nd network. Saves wear’n’tear while you work the usb drives in the interim.
Don’t broadcast its SSID if you don’t want it advertised to every yayhoo in range, make it wired-access-only if you want, whatever. Disable wifi access. However secure you want to make it.
If you don’t mind spending the bux, mirror each NAS with another NAS, to be kept offsite. Every now and again, hook it up and sync up master/slave NASes. RAID is nice in case one drive in an array takes a dump, but if the whole NAS gets fried at once (lightning strike, fire, whatever), you’re SOL.
That’s also a good time to take inventory of everything you got: pix, movies, music, saved webpages, whatever. Just take a recursive directory listing into a text file at least, so you can search through it, even when nothing’s hooked up.
Basically, whatever system you want, whether basic or elaborate, is better’n just leaving all your crap on a peecee which’d croke and take alllllllll your precious goodies with it.