Accelerating file server

Hello.

We have put all the different sorts of compilers in a network drive on
a Windows-based PC, and using them to compile source codes on other
machines in the network by directly executing the compilers from the
network drive. The advantage is that we don't have to install those
many compilers on each and every PC, but the disadvantage is slow
compilation. So we are looking for some ways to accelerate it.

The drive size is about 180 GB, but I guess relatively small portion
of them is frequently used but they are scattered in many directories.
Is there any way to let Windows automatically cache most accessed
files inside RAM as much as there are free RAM space? Well, I don't
know. If you have any better idea and suggestions I would like to hear
from you.

Thank you.