thank you Ali for suggestion.
Sounds like you will need to use Gridstore along with DASH copy.
Please correct me if I am wrong. In gridstore option, we need to use the shared disk library between two MA servers and both the media servers will write to same disk library (example - 10 clients will use media server1 and another 10 clients will use media server2 to write on same disk library).
1. Will the 2 MAs on the data center side also be writing to the same libraries?
As of now , my plan is to have dedicated disk library for backup. But If you are suggesting gridstor, I can plan for that also.
2. The remote site will have its own library correct?
As of now , no remote sites. Only two Datacenters : DC1 & DC2. Each DC will have 4 media servers for local Backup. Each MA will host 2 DDBs. (first DDB for local backup and second DDB is the dash copy of another site DDB).