什么是Windows Azure实例？ [英] What exactly are Windows Azure Instances?

问题描述

在Windows Azure门户（截至2013年1月）当我将Windows Azure网站实例从1扩展到6时，我得到什么？这是否意味着我的网站在同一台服务器上有6个物理实例？在IIS中有6个正在运行的网站是否自动加载平衡？

On Windows Azure Portal ( as of Jan 2013) What do i get when i scale the Windows Azure Website instance from 1 to 6? Does it mean there will be 6 physical instances of my website on the same server? In IIS terms are there 6 running websites all automatically load balanced?

但是从帮助文本判断，将实例称为进程？如果是这样，我的网站将获得6个CPU，RAM或什么？

But judging from the help text it refers to instances as processes? If so, my website will get 6 CPUs, RAM or what?

干杯

推荐答案

Windows Azure网站与Windows Azure Web角色不同，它是一个高密度多租户平台，不使用虚拟机作为扩展单元，而是使用虚拟机进行处理。

Windows Azure Websites, unlike Windows Azure Web Roles, is a 'high-density' multi-tenancy platform which does not use virtual machines as a scale unit but processes.

使用Web角色（或工作者角色或虚拟机），每个实例等于一个虚拟机，其规格由所选的实例大小决定。

When you use Web Roles (or Worker Roles, or Virtual Machines for that matter) every instance equals a virtual machine whose 'specs' are determined by the instance size selected.

使用可以在共享实例和保留实例之间选择的WebSites：

When you use WebSites you can chose between a shared instance and a reserved instance:

保留的实例从尺度角度来看非常像Web角色，因此缩放单位是虚拟机（并且相应地支付）

Reserved instances are pretty much like web roles from a scale point of view so the scale unit is of a virtual machine (and you pay accordingly)

共享实例使用高密度模型，其中多个租户可能存在于同一虚拟机上，但每个都有自己的进程隔离

Shared instances use the high-density model in which multiple tenant may exist on the same virtual machine but each has it's own process with isolation being provided by the platform through sandboxing.

在共享实例情况下，缩放单元不是整个机器，而是一个额外的进程，这很可能在一个单独的虚拟机。

In the shared instance case the scale unit is not an entire machine but rather an additional process, which is very likely to run on a separate virtual machine.

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