Time Machine Back-up Disk help

[Chain.p]

Hey all,
I was wondering..
What should i do when my Time Machine backup disk is full?
It is nearly full and what do i do....
What if i buy a new Hard disk, what am i suppose to do?
My time machine always do a "FULL" backup instead of the changes, how can i fix this??😕😕
Thx

 

[Tumbleweed666]

Do you have an encrypted hard disk? That's the only reason I am aware of that TM would do a full backup, in which case, TM is not your best strategy.

Otherwise, I have no idea why TM would always be doing a full backup. How do you know it is? Have you looked when its doing a backup to see how much its saving?

 

[old-wiz]

when the disk fills up, time machine automatically deletes oldest backups.