I haven’t had a chance to set up Time Machine just yet, but I plan to this weekend - I had read about how it will make backups until whatever you are using for storage is full, then delete the oldest backups to make room for newer ones. I wanted to be sure I have a large enough external hard drive to save a lot of backups, so I bought a new one. I’m going to get it formated and set up this weekend, so I’ll let you know how it goes. Thanks for commenting!