Currently Being ModeratedJun 1, 2012 5:07 PM (in response to Ray ong)
Ray ong wrote:
Question on the time machine. Time machine backup everything from my computer. My question is, if I deleted some files to empty my macbook air and when I backup using my time machine, will the time machine update to the external harddisk by deleting the files I emptied previously from my computer?
Yes. Depending on when backups are run, and how long files were on your system, the backups can be deleted in as little as 24 hours or be kept for as long as there's room on your backup drive. See Time Machine - Frequently Asked Question #20.
Backups and extra storage are entirely different things.
For best results, you need an external HD for the "overflow" of stuff that won't fit on your Mac. Then let Time Machine back up both your Mac's internal HD and the external HD. See FAQ #32 for details and considerations.