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In addition , the SLA parameters system contains the fixed parameter and variable ones . Considering the different types of services ( SaaS , PaaS , IaaS ), the parameters are often different .

另外，针对SLA指标体系的设计，考虑到固定指标和可变指标，不同类型服务（软件即服务、平台即服务、基础设施即服务）SLA的指标和参数阈值也往往不一样。

IaaS consists of a combination of hardware and software resources .

IaaS有一个硬件和软件资源组合组成。

IaaS is the delivery of computer infrastructure as a service .

IaaS是以服务的形式交付计算机基础设施。

The IaaS divides into two types of usage : public and private .

IaaS分为两种用法：公共的和私有的。

One method of assessing risks of IaaS unavailability is quantitative .

评估IaaS不可用性风险的一种方式是定量评估。

Let 's take a look at the extent of control IaaS cloud service users have .

我们看看IaaS云服务用户拥有的控制范围。

The Open Group is another organization with an effort to standardize IaaS .

OpenGroup是另一家努力标准化IaaS的组织。

Learn about the key concepts of Infrastructure as a Service ( IaaS ) .

了解基础架构即服务（IaaS）的一些关键概念。

Let 's look at an IaaS failure scenario to illustrate this knowledge .

让我们看看一个IaaS故障场景，以演示这方面的知识。

IaaS software is low-level code that runs independent of an operating system & called a

IaaS软件是低级代码，独立于操作系统运行&称为

The IaaS provider controls the infrastructure of traditional computing resources in the cloud environment .

IaaS的供应商控制着云环境中传统计算资源的基础架构。

So , IaaS consumers build the ( virtual ) server starting at the operating system layer .

所以IaaS消费者需要从操作系统层开始构建（虚拟）服务器。

This is exactly the kind of problem that you can easily mitigate using IaaS .

这种问题正是您可以使用IaaS轻松缓解的。

IaaS is not expected to be fully standardized for a few years .

有几年，大家对IaaS完全标准化不抱什么希望。

The IaaS security policy focuses on accessing and protecting data and managing virtual machines .

IaaS安全策略关注于访问和保护数据以及管理虚拟机。

Virtualization of infrastructure and IaaS enable better utilization of capacity and higher availability .

基础架构的虚拟化和IaaS支持更高的容量利用率和更高的可用性。

Based on the survey , a virtual execution environment of IaaS cloud is proposed and implemented .

在此丛础上，研究、实现了云计算平台中的虚拟化运行环境系统。

As the foundation of other services , IaaS plays a supporting role in cloud computing .

作为其他云服务的基石，IaaS在云计算中起着基础和支撑作用。

Nimbus is another IaaS solution focused on scientific computing .

Nimbus是一种以科学计算为中心的IaaS解决方案。

Internet-based services such as storage and databases are part of the IaaS .

基于Internet的服务（如存储和数据库）是IaaS的一部分。

Cloud Infrastructure as a Service ( IaaS ) .

云计算软件即服务。

Remember , not all IaaS implementations are used to support SOAs .

记住，并非所有的IaaS实现都用于支持SOA。

IaaS is the leasing of infrastructure ( computing resources and storage ) as a service .

IaaS就是将基础设施（计算资源和存储）作为服务出租。

( IaaS ), which is a natural development of the virtualization process that these companies are undergoing .

（IaaS），它是这些公司正在经历的虚拟化流程的自然发展。

In the meantime , check out the Resources section for links to more information on IaaS .

在此期间，请查看参考资料部分的链接，了解关于IaaS的更多信息。

This new pattern consists of three basic patterns , i.e. IaaS , PaaS and SaaS .

在这种模式中，包括三种基本模式，即IaaS，PaaS和SaaS。

However the IaaS does not have an application-development environment or any testing services .

然而，IaaS并没有一个应用程序开发环境或者测试服务。

These tools together provide a set of Infrastructure-as-a-Service ( IaaS ) cloud computing solutions .

Nimbus是一套开源的工具集，这些工具集共同提供了一种基础设施即服务（IaaS）的云计算解决方案。

This bundle , with or without storage , is usually referred to as IaaS .

这种捆绑在一起的服务通常简称为IaaS，无论是否带有存储能力。

The system is decoupled from the underlying infrastructure and therefore easy to get running within any IaaS layer .

由于系统与底层基础设施间的连接是松耦合的，所以它能轻易地运行在任意IaaS层之上。