My time machine filled up after only 1 backup. I started over again too. Was not carried over from Catalina. never had an issue before. My TM drive is 6 terabytes. It’s backing up two drives. My Macintosh HD drive which is using about 150GB and my media drive which is using 4.5 terabytes. So there should be over 1 terabyte left for multiple versions. When i look at the TM drive, it does show its using up 5.8 terabytes. But i dont understand why when the 2 drives are only using about 4.6. Anyone else having similar this issue?