IMOVIE DATA from Handycam reuse

I am new to IMAC and use IMOVIE 9 to make import videos off my SONY HDR-XR100 I import them into an event.

I delete the hard disk on my Handycam or I cannot tape anything else. Now I am afraid everything is on computer I have no tape since the camera is HD. How can I backup the video I previously taped and save as usable input in the future. Currently I am taking uo 336 GB of my hard drive in Imovie Events.

Thanks for advice and help on this

one more question

Will I be able to import them in later if I remove them from events? Will it free up space?

Yes you are tight. I have an external drive and time machine. I am going to copy the folders to both. I am wondering if after I copy them and then delete them from events if I wanted to use them for Imovie I would be able to imprt them from external drive back to event if needed.

thanks for your patience
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