How to fix an overflowing backup disk

I work from home and currently use Time Machine to back up to a 340GB external drive. Since I installed that drive, I’ve upgraded my Mac mini and I now have a model with a 500GB drive. This is now perilously close to overflowing the external backup. I have sensitive client documents, so any kind of cloudbased backup is out of the question.

Can I just tell Time Machine to only back up the client folders? Or can I extend my backup by adding another disk? Jason Harringford If you add another disk, Time Machine will back up everything to that as well. You can click Options in Time Machine preferences and tell it which drives or folders to exclude from the backup. If you add every folder except the ones with your client data, then these will be the only things backed up from now on. But it won’t delete the original copy of the whole disk that was made when you first assigned this disk to Time Machine.

The best option is to just buy a bigger disk. A 750GB drive will cost about £37 from Amazon and this will give you plenty of room for all your data.