Some capacity question

I have a proposal to install a Mayan EDMS solution for a semi government agency. I have a few initial questions.

Target installation is on local server with a disaster recovery on AWS. Thre are 50 years of dicuments to upload including PDF, TXT and images.

  1. Can Mayan be deploy n acluster mode?
  2. What is the maximum storage size in theory?
  3. What is the maximum document size?
  4. I have installed Mayan on ubuntu, but is there other better OS to support a large installation?

Please response!