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Rail Spikes: Deploying Rails on EC2
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Same with your database; make sure you’re backing it up frequently to S3 or some other safe place
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Computer Laboratory - Xen virtual machine monitor
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Firstly, virtual
machines must be isolated from one another: it is not acceptable for
the execution of one to adversely affect the performance of
another. -
Secondly, it is necessary to support a
variety of different operating systems to accommodate the
heterogeneity of popular applications. - 1 more annotations...
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InfoQ: Amazon EC2 Gains Favor with JEE and Groovy Developers
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So in addition to the default small instance (1.7 GB of memory, 1 1.0-1.2 GHz 2007 Opteron/Xeon processor, 160 GB of instance storage, 32-bit platform) Amazon now offers large (7.5 GB of memory, 4 processors spec as before, 850 GB of instance storage, 64-bit platform) and extra large (15 GB of memory, 8 processors spec as before, 1690 GB of instance storage, 64-bit platform) instances.
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you need a heavy-weight VM for database processing with two lightweight VMs providing an application server service.
- 3 more annotations...
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Amazon.com: Amazon EC2, Amazon Elastic Compute Cloud, Virtual Grid Computing: Amazon Web Services
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Data transferred between Amazon EC2 and Amazon S3-US or Amazon SimpleDB, is free of charge (i.e., $0.00 per GB)
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Amazon S3 usage is billed separately from Amazon EC2; charges for each service will be billed at the end of the month.
- 1 more annotations...
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解密云计算 - 云计算 - CSDNBlog
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Amazon的EC2的最大问题是硬盘存储是非持久性的,如果映像不运行,所有不属于初始Xen映像的数据都会丢失。
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现在,我们不得不提到IMB。IBM通常的做法是,提出一个概念,看市场反映,然后找一个合适的点切入市场。但这一次,它没有做多少犹豫,迅速扑进云计算混战。
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