CMS Design and Build Project

We are looking to build a cms that will index files and content and store those files on a server for fast retrieval. This is a multiple phase project you will need to build a storage vault (linux box that will store the data files, processor that will index and process files and information, client that will upload files and retrieve files and information from the processor and storage vault. I am open to discussion on programming languages for this project. This is not a website this is an 3 stage application. Server, Processor, Client.