Symantec Enterprise Vault Deployment

I plan to deploy Symantec Enterprise Vault 11 in a company a company with two subsidiaries, one is in country-A and the other in country-B.

So how symantec Enterprise Vault can meet this scope of work?

1. Provide a holistic and detailed design indicating which software components will be supplied, what hardware components are required from the company on the basis of the current environment in Country-A Data Center and planned infrastructure in Country-B

2. The design and implementation will build a solution with a 2 ways replica between Country-A and Country-B and a failover functionality.

3. Use both sites for redundancy and failover in case of an outage of one site
4. Expected to detail all aspects of the solution implementation specific to how which requirement will be met, using a detailed project plan
5. Implement the solution to be fully operational
6. Installation, configuration and successful testing of the solution without disruption of existing email services
7. Work closely with the company’s internal team of 3 engineers during implementation to ensure knowledge transfer on the installation, configuration and maintenance of the EV servers
8. Currently, each site Country-A and Country-B has 3 exchange servers. The Symantec EV solution will integrate seamlessly with the onsite Microsoft exchange servers
9. Integration with the existing infrastructure and servers including the current Backup system (No Backup Exec and no NetBackup)
10. Each EV server will serve the mailboxes located in the same Data Center
11. Archiving of emails for a minimum period of 10 years within a secure based environment/storage  in each data center
12. Redundancy capability in that should there be an outage on the onsite EV servers, access to archived emails is ensured
13. Mail Archiving server availability of 99.99%

Please help me to answer this scope of work!

Thank you in advance.