1 Windows Server 2008 R2仅支持64位架构。查看系统要求：http://www.microsoft.com/windowsserver2008/en/us/ system-requirements.aspx
Amazon 没有 64 位的小型实例，因此您需要使用大型或以上实例。他们不允许您在微实例上启动 R2，即使微实例可以是 64 位，这可能是出于性能原因。
2 以下是你的第二个问题的答案：https://serverfault.com/ questions/55355/windows-server-2008-2008-sp2-和-2008-r2之间的区别是什么
1 Windows server 2008 R2 only supports 64-bit architecture. See the system requirements:http://www.microsoft.com/windowsserver2008/en/us/system-requirements.aspx
Amazon does not have small instance that is 64-bit, hence why you need to use large or above. And they do not allow you to launch R2 on a micro instance even through micro instances can be 64-bit, probably because of performance reasons.
2 Here is the anser to your second question:https://serverfault.com/questions/55355/whats-the-difference-between-windows-server-2008-2008-sp2-and-2008-r2
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1 Windows Server 2008 R2仅支持64位架构。查看系统要求：
http://www.microsoft.com/windowsserver2008/en/us/ system-requirements.aspx
Amazon 没有 64 位的小型实例，因此您需要使用大型或以上实例。他们不允许您在微实例上启动 R2，即使微实例可以是 64 位，这可能是出于性能原因。
2 以下是你的第二个问题的答案：
https://serverfault.com/ questions/55355/windows-server-2008-2008-sp2-和-2008-r2之间的区别是什么
1 Windows server 2008 R2 only supports 64-bit architecture. See the system requirements:
http://www.microsoft.com/windowsserver2008/en/us/system-requirements.aspx
Amazon does not have small instance that is 64-bit, hence why you need to use large or above. And they do not allow you to launch R2 on a micro instance even through micro instances can be 64-bit, probably because of performance reasons.
2 Here is the anser to your second question:
https://serverfault.com/questions/55355/whats-the-difference-between-windows-server-2008-2008-sp2-and-2008-r2