Every hour the Time machine pops up a dialog window. It takes the focus off of what I am doing and is generally a nuisance. The external disk drive is connected via a thunderbolt cable. It is an apple thunderbolt powered 1t drive. It is primarily used by time machine. I could care less that it cleans up its own space, just do it and don't tell me about it. There is nothing I can do or should do.
Text of dialog below:
Time Machine couldn’t complete the backup to “HD-PATU3”. The backup disk ran out of space unexpectedly. Time Machine will try to make more space available by removing expired backups during the next scheduled backup.
Open Time Machine preferences to select a larger backup disk or make the backup smaller by excluding files.
Is there anyway to get rid of this nuisance? One time I went in and manually cleared a bunch of old time machine files, and that fixed it until it filled up again. But I thought apple was better than that. Forcing users to understand the administration of there machines and do manual efforts.