I have a 15 inch Mac Book Pro that is my main machine. At some point, in the second half of 2011 I purchased a 750GB external hard drive to configure Time Machine on my laptop. This is my main method for backup, and I always keep it up to date. A few weeks ago it started complaining that it did not have enough space and that it needed to delete the oldest backup to create this new one. I allowed this to happen at first, but realized that I was losing possible important historical snapshots of my data.
I want to purchase a new, larger external hard drive to keep my time machine backups. Before spending a couple hundred dollars in this project I have a couple of questions regarding best practices:
- Will TM allow me to integrate my older backups into the new hard drive?
- While it seems convenient to have my whole history in one hard drive, would it be smart to do so? Or should I not integrate them? I understand that this would constitute a single point of failure that is highly undesirable.
- What other advanced practices do people have with TM to not have a single point of failure?