It's not all Apple's fault (though a lot of it may be)... for example, Apple changed the protocols for accessing some networked devices in Lion, supposedly to make it more secure... but in the process, killed all access to my iomega SureStore NAS. I have a 4GB paperweight on my desk now until iomega releases new drivers/firmware for it. And iomega says they've been working with Apple to enable TimeMachine backups on their NAS devices (assuming we can ever access them again). iomega promised the new drivers and firmware would be out before Lion was released... but that didn't happen.
Originally Posted by kch50428
Using USB connected devices for the time being appears to be the only other option to Apple's $500 TimeCapsule.