Here is my situation. I live in a shared house where there is already a wireless router that other people use. I have a Macbook Air that has 128GB of hard drive. I want to use Time Machine for automatic backups. I'm considering one of the following options:
1) I have a spare 320 GB USB drive and spare old Thinkpad that I basically use as a Desktop running Ubuntu. Its on 24/7 and connected to the wireless network. If I connect my hard drive via USB cable to my Thinkpad, is it possible to configure it to be used with Time Machine on my Macbook Air? If so, can I also access the drive from "outside world"?
2) I can get a Time Capsule. I do not have the option to use it as the router (other guys won't like messing with the router). I can connect it via Ethernet to the router but since the router is not in my room, I'd rather not. Is it possible to connect it wirelessly to the router for backups? If so can I access it from the outside network?
Which of the two options is more feasible?