You have a few options:
1) Does dropbox back up stored files? If so, you can simply rely on that and browse through the web interface when you want to access them. If it’s archived pictures, then you might as well do this as you won’t be accessing them all the time. The only risk is if they are accidentally deleted somehow. If dropbox has a read-only setting or some kind of file history setting then you should be ok. Also dropbox could go out of business, so you’d have to scan the T&Cs to see what happens.
2) NAS on your network – these are cheap nowadays, and you can map a network drive so your computer sees a z:\ drive that you can use as if it’s a normal drive. This will only work in your house (ok so some can be accessed remotely but it’s always going to be slow). You could do what I am planning to do and copy any recent photos you want to work on to your local drive and copy them back when you’re done.
3) Check if the laptop can be upgraded by opening it up – most can.
4) Portable external drive. If you are at a desk there’s really no penalty to doing this. Again you might wish to copy parts of it to your local drive if you want to work on them or access them somehow when you are not at home. Only issue with this is is when you are sitting on the sofa a dangling portable drive is a right pain.
In all cases having both dropbox and a local copy is important. The local copy will save you if dropbox goes tits up; the dropbox copy will save you if your house burns down or your computer gear gets robbed.
indeed. never heard of an non-upgradeable one.
Well – I’ve just got an MS Surface, and whilst it IS upgradeable, opening the case is difficult and risky.