Copy Large Number Of files Over Network in a fast manner.

I Have written a Perl program to Copy files (about 1000) from One drive to a netowork Drive. But it is very slow. To speed this up, I decided to copy only the files that have changed/modified. But to see if the file is changed/modified, I still need to go through all the 1000 files and get the atttributes of all the files and compare against the local files. This is taking lot of time. Does anyone have ideas to make this faster ? Harish ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Windows , PERL.