I'm trying to help out a fellow Sonarian. He's got a full project drive. I picked him up a 2 TB USB drive.
What is the best way to offload projects to it?
Can we just cut and paste or do we need to convert them to bundles?
Thanks

You can take any project folder (w/ audio) and just drag it over to the other drive.  Or a whole folder - I organize my uber-folders by project, ie. Band/CD/Song.  You can drag the whole thing over to an external drive and then launch it from the external drive.  Or just drag it back to the internal drive and launch from there.  Just remember you'll have to use the "Save as" if you want to save your changes to a different drive (C:/ or D:/ projects/band/CD/Song).
 
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I wouldn't use Bundles. Obviously hard drive space is no longer an issue. So I drag and drop  my entire folders to my external drive, just in case there's something I will need someday. It's never happened and I have dated folders for albums I'm not finished with. When the album is finished I delete all but the latest folder. . 
 
I have 3 drives in my computer. OS is on a SSD and then two 1TB data drives. 
First data drive is all my working files the second is my daily backup drive and old archived stuff. 
 
For that drive I use the "save as" method as I'm working on stuff.
The "save as" method will clean up unused audio files so saves a little space. If you have the time to do this it's the alteritive way to transfer files to a external drive, just takes a long long time if there are dozens of songs.  

I just drag stuff to a backup drive at a project folder level.  No need to convert.
 
Bob Bone
 

Cool. It sounds easy.
Thank you all for your replies.

as you know...cut and paste moves files and then deletes the source...data transfer might get corruption...so copy paste first is best,,,check the files are correctly copied, and all works there in,  have the recorded wav or ogg iff files at least....then delete source....to be safe, nuke the drive after the copy is checked....from orbit.

If it was me, I would do the "save as" routine to the other drive.
 
This strips out the project to just those files actually used in the project.
The potential disc space saving can easily run to hundreds of megabytes per project