Lots of different options based on your budget, from simple cameras with an sd card (similar in theory to a dash cam) through to a set up that records to a hard drive.
The only difference really is that you cant access it remotely.
Your budget will aim you in the right direction, if you say what your budget is, and what you need from it (IR for recording in low light, one/two/more cameras, what resolution you want, etc.) We can point you towards it.