We run our company infrastructure (corporate Web site, JIRA, Confluence and Subversion) on EC2; we've had no outages on any of the machines for about 6 months. Since EC2 came out of Beta last October, they have a proper SLA in place.
You can do a few things to mitigate ec2 outages:
Create a machine image (AMI) of your exact configuration so that you can bring up a new instance right away in case of failure (and make sure you can instantiate your new AMI successfully before you need it !)
Store critical data on Elastic Block Store volumes; these persist even if the EC2 instance goes down, and are more reliable than physical hard drives since their data is replicated.
I have used EC2 for about 6 months now. Last year they crashed from time to time (I have 4 running and one crashed on average once a month or so). In the last 3 months we have had no crashes at all. I would say Amazon has really beefed up there infrastructure as EC2 is now out of beta.
我的 Ubuntu 8.04 实例已经运行了近一年（今天 354 天），没有任何问题。 我用它作为我的 Web 开发项目的测试服务器。 它只消失过一次，我所要做的就是重新启动它。
I have had an Ubuntu 8.04 instance up for nearly a year (354 days today) with zero fuss. I use it as a test server for my web development projects. It has only disappeared once, and all I had to do was reboot it.
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我们在 EC2 上运行我们的公司基础设施（公司网站、JIRA、Confluence 和 Subversion）； 大约 6 个月以来，我们的任何一台机器都没有发生过停机。 自从 EC2 去年 10 月推出测试版以来，他们已经制定了适当的 SLA。
您可以采取一些措施来缓解 ec2 中断的情况：
We run our company infrastructure (corporate Web site, JIRA, Confluence and Subversion) on EC2; we've had no outages on any of the machines for about 6 months. Since EC2 came out of Beta last October, they have a proper SLA in place.
You can do a few things to mitigate ec2 outages:
我已经使用 EC2 大约 6 个月了。 去年他们时不时地崩溃（我有 4 个正在运行，其中一个平均每个月左右崩溃一次）。 在过去的 3 个月里，我们没有发生过任何崩溃。 我想说亚马逊确实加强了那里的基础设施，因为 EC2 现已结束测试版。
布鲁斯
I have used EC2 for about 6 months now. Last year they crashed from time to time (I have 4 running and one crashed on average once a month or so). In the last 3 months we have had no crashes at all. I would say Amazon has really beefed up there infrastructure as EC2 is now out of beta.
Bruce
这几天我运行了大约10个实例，它们运行良好，没有崩溃。 他们运行非常稳定。
I have run about 10 instances for a few days, and they ran fine, no crashs. They run very stably.
我的 Windows Server 2003 实例已经运行了大约 3 个月，没有出现任何崩溃。
I've had a Windows Server 2003 instance running for about 3 months now with out any crashes.
我的 Ubuntu 8.04 实例已经运行了近一年（今天 354 天），没有任何问题。 我用它作为我的 Web 开发项目的测试服务器。 它只消失过一次，我所要做的就是重新启动它。
I have had an Ubuntu 8.04 instance up for nearly a year (354 days today) with zero fuss. I use it as a test server for my web development projects. It has only disappeared once, and all I had to do was reboot it.