On-Prem. EV --> Enterprise Vault.Cloud Migration path
We are running EV 9.04 currently with on-prem Exchange (500 mailboxes). We are exploring moving to O-365, but I'm not impressed with the discovery and archive handling offerings from MS. We have over 2tb of data in our on-prem vault and if we do move to 0-365, I don't want to use two seperate systems for our archive/discovery needs if I don't have to. Is there a migration path from on-prem Vault, I haven't found any documentation on migrating data from on-prem EV to Vault.cloud.
As we evaluate which solution would be better/most cost effective/easiest to manage. I'd like to hear from anyone who has gone through a on-prem --> Vault.cloud migration and how it went.