Thanks for your follow up. I do nkow and understand all that you told me. I do have most of my photos both on their original storage cards and on
CDs. But my question is really much more complex than that.
I have almost filled up a high capacity hard drive on a new MacBook Pro.
To back this up I purchased a 4TB external hard drive. I used that drive to store my Aperture Vaults. I also purchased a new Apple Time Capsule as an additional back up. I also have 50 years of my photographic work
being scanned and given to me on a set of two 1TB G Raid Mini drives. These are backed up one to another so there is never a time
when we cannot find the entire contents of those scans on both of
the G Raid Mini drives.
What I need to do is to get my photo files off my MacBook Pro and onto my 4TB external hard drive with no possibility of losing or degrading information in those files. I am looking to end up with a
situation where all of my photos (this is a 50 year collection of fine
art photos) can be viewed and sorted for submission to other galleries
and collectors, printed for publication and then reorganized for other
purposes. The MacBook should be at the center of this organization
but with the ability to store all the photos on back up media where it
will be perfectly safe yet universally available.
Does that make sense to you?