Upgrading an environment that uses multiple embedded database and management servers has the following implications:
The management servers do not use failover or load balancing for Symantec Endpoint Protection because the embedded database does not support failover or load balanced servers.
The management servers are Symantec Endpoint Protection replication partners.
All sites have a computer on which you first installed the management server. You must upgrade this management server first, because it contains critical site information such as the encryption key or encryption password. You then upgrade the other management servers that you installed for replication.
To upgrade an environment that uses multiple embedded databases and management servers
On all management servers, disable replication.
This step is required for upgrades from Symantec Endpoint Protection Manager 11.0, because attempts to replicate during the upgrade process corrupt the database due to a product version mismatch. Symantec Endpoint Protection Manager 12.1 and later does not allow replication if the product versions do not match.
Authenticate to and log on to the computer on which you installed the first Symantec Endpoint Protection Manager.
Do not log on to Symantec Endpoint Protection Manager.
Upgrade the management server.
Upgrade all additional management servers one by one.
After you upgrade the servers, enable replication on each server.