My real concern is about the location of the original images. Your original images can be on any drive (internal, external or network drive) that you want them to be on. I guess my question is can I edit from either hard drive, or should I keep one for edited and the other for purely for backup. You can edit them from any hard drive. The meaning of a drive in this context (it contains backups, or it contains originals) is entirely up to you. If a drive is considered to be a "backup" drive, then in my opinion you should never never never ever use the photos on that drive, except in the unfortunate situation where some or all of your photos on the original drive become unusable. Can Lightroom cope with the original image being in more thna one location? Just like any other software program, your files can be on any drive you want them to, including having the "original" files on multiple drives. But one thing you should not do, as I said, is work with files on the "backup" drive, as I said, leave these unused and untouched except for the case where the originals become unusable. Do not put "originals" and "backups" on the same drive.
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