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let's start with the following articles
https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/enhanced-networking-ena.html
as a summary
- (optional) ENA drivers are included in Windows Server 2012 R2 by default but if you are using an old AMI version etc. please download and install ENA driver manually.
- Note: do not forget to backup :)
- Enable ENA Support
aws ec2 modify-instance-attribute --instance-id i-1234567890abcdef0 --ena-support
- then update the instance type
- verify the new ENA adapter and driver from the Device Manager
Take the following steps in AWS Console:
- Select the instance
- Choose Instance state, Stop instance
- With the instance still selected, choose Actions, Instance settings, Change instance type
Recommending backing up all data before attempting.
Here is a video that walks through migrating a Windows server instance: https://www.youtube.com/watch?v=Df89U7Xi24A
Thank you! I do know how to change an instance type. However, I am trying to migrate from a T2 to a T3 instance, so I need to enable the ENA - elastic network adaptor?
I guess I am asking how do I enable the ENA for Windows Server 2012.
Thanks
The network interfaces are different between t2 and t3 and will not have network connectivity after you change the type.
Please see the Compatibility https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resize-limitations.html
I have yet to change a windows from T2 to T3 but I also need too at some point
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Thank you! That’s helpful. I will try to work through the steps.