Migration EV Cluster 10.0.2 to 12.1.12

Hello,

In a few weeks I have to migrate an EV cluster (2008 R2) in 10.0.2 to EV 12.

I know that you cannot "just" upgrade like that and that EV12 cannot be installed on W2K8R2 but on a WS2012/R2. No problem at all for this.

My main problem (if we can say that is a problem) is the add in.

As the company is on his way to migrate to exchange 2016 and O365, I was asking myself: can I use the EV12x in O2016 vO365 with EV 11?

I brief, I was planning to do it like that

• Upgrade from Enterprise Vault 10 to Enterprise Vault 11

• Upgrade Office 2007 to 2016 v Office 365 (with EV12 Add-In - TBC)
• Installation Exchange 2016
• Upgrade EV11.x to 12 via Migration Wizard
• Make the final changes to reflect new infra (Add DD as VS and New Exchange Servers)
• Add new EV to Backup
• Deploy Outlook Add-in
• Add New Exchange Servers to EV12
• Migrate mailboxes (Exchange part)
• Migrate archives from VNX to DD
• Check if all OK

That's in 'raw' how I woudl do it. Just that add-in question that remains.

Cheers!