Yes, still around. 500gb is a standard HDD. You can upgrade to 2TB if desired. This unit has one sata slot, I have others with up to 10. I have to inquire about price difference. Probably order without the HDD, you pop in the 2TB big drive. Record times are completely dependent on frame rates, amount of motion detected, and desired recording quality. 2 weeks should be minimum with 500gb. The cameras are 420 lines, which is OK for most system, but most of what we sell to installing dealers is 540 to 700. Yes, that costs more. This camera package is a consumer grade set. If you want commercial grade, I will be happy to set you up, but 500.00 is not do-able. PM sent