Archiving Digital Pictures par date taken!

Good afternoon,

I need some help in respect to archiving my thousands of digital pictures based on date. I have about 2 + TB of digital pictures that are on PC and also on Mac computers. I already storage them on an external hard drive as backup but they are not archived as per date. I was wondering if you guys know a way for me to retrieve these pictures and re-archive them back but this time with a rank for dates. Unfortunately none of my computers have such high capacity memory on hard drive, so I’m forced to use the external one for archiving.

Thank you very much for your advice.

M.