Make a snapshot (image) of a hard drive into a file.

Windows

Useful tip (store on a different wiki page?):

How to take a blank hard drive, plug it into a USB "toaster", and format it as NTFS (or whatever):

Image the source drive

Use Macrium Reflect free:

Image to group's file share, after verifying drive size is appropriate. Use your <AS-NetID-adm> account to:

Restore to a blank drive

Mac

Carbon Copy Cloner (or SuperDuper)