How would I go about this?

I have a ton of grouped pdf files that I need to store in such a way that I can read and search them in the fastest way possible. Write/Annotate/Delete times are not important.

* The pdfs are already grouped by various themes and alphanumerically. This should facilitate searching.

* Average file size is about 2MB.

* There are about 2.5M files

How would I go about this?

>>8
Maybe I'm just being dumb, but I don't see they arrive at

Antony and Cleopatra and Hamlet

Did they refer to the matrix table to get those names? If so, how.