I recently purchased a new external hard drive after one containing tens of thousands of image files crashed (possibly in excess of 100,000 files). But I had backups, BUT it is taking a ghastly, incomprehensibly long time to restore the image files to the new external drive. It's taking about 45 seconds per individual image file, and now and then the computer shuts down and stops the transferring. I estimate with the restoration running 24 hours a day it will take three or four weeks at least to get all the files into the new external drive. Also, I've experimented with LR to see if it will reconnect the files already transferred with the LR catalog. So far, nothing works. I cannot get the files already transferred to show up in LR at all. If I cannot get the files reconnected, I may have to reimport them with loss of years worth of PP work.
PHOOEY!!

It's enough to make one go back to film, but then again, I couldn't participate on PF unless the negatives and chromes were scanned*, which puts me right back in the same box.

*The external drive that failed contained several thousand scans from chromes.