首先我们来查看一下当前exchange server 2016的版本。
可以看到是standardevaluation。
然后我们输入下面的命令来激活exchange 2016服务器。
Set-ExchangeServer ExServer01 -ProductKey XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
激活完成后需要重启信息存储服务，如图。
激活完成后，再次查看如图，其中的一台exchange 2016服务器已经激活，变成了enterprise版本。
下面我们可以继续使用图形界面的方式来激活另外一台服务器（exchange提供了两种激活的方式，图形界面和powershell）
具体的步骤如下：
Open the EAC by browsing to https://<Client Access server name>/ecp.
Enter your user name and password in Domain\user name and Password, and then click Sign in.
Go to Servers > Servers. Select the server you want to license, and then click Edit .
(Optional) If you want to upgrade the server from a Standard Edition license to an Enterprise Edition license, on the General page, select Change product key. You'll only see this option if the server is already licensed.
On the General page, enter your product key in the Enter a valid product key text boxes.
Click Save.
If you licensed an Exchange server running the Mailbox server role, do the following to restart the Microsoft Exchange Information Store service:
可以在管理工具机器上远程重启第二台exchange 2016服务器的信息存储服务，如图。
Open Control Panel, go to Administrative Tools, and then open Services.
Right-click on Microsoft Exchange Information Store and click Restart.
再次查看，发现两台都激活了。
