Introduction to Cloud Computing

Insigma Hengtian Software Ltd.Insigma Hengtian Software Ltd.

* * 部分材料摘自部分材料摘自 Jimmy Jiang， Doug Terry

Shanping Li

2011-10-12

Shanping Li

2011-10-12

AGENDA

>Historical Perspective

>Definition

>Benefits

>Reference Architecture

>Technologies

个人观点

>云计算是 IT 技术集大成者，但是鲜有技术创新>云计算是业务模式的创新

>云计算的成功取决于 技术 内容

>核心竞争：如何将用户“捆绑”在你这片云彩上

云计算发展历史

NIST’s Definition

>Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.

>This cloud model promotes availability and is composed of five essential characteristics, three service models, and four deployment models.

FIVE Essential CharacteristicsFIVE Essential Characteristics

>On-demand self-service

>Broad network access

>Resource pooling

>Rapid elasticity

>Measured Service

THREE Service Models -- By Service TypeTHREE Service Models -- By Service Type

> IaaS (Infrastructure as a Service) Offering web-based access to storage and

computing power. The consumer does not need to manage or control the underlying cloud infrastructure but has control over the operating systems, storage, and deployed applications.

Samples: Amazon EC2/S3

>PaaS (Platform as a Service) Giving developers the tools to build and host

web applications Samples: Google App Engine, Microsoft

Windows Azure

>SaaS (Software as a Service) Access applications from various client

devices through a thin client interface such as a web browser

Samples: Salesforce online CRM

> ITaaS / XaaS

More Generic

More Specific

THREE Service ModelsTHREE Service Models

FOUR Deployment Models -- By UsageFOUR Deployment Models -- By Usage

>Private Cloud

>Community Cloud

>Public Cloud

>Hybrid Cloud

Cloud Reference ArchitectureCloud Reference Architecture

Service InterfaceService

InterfaceService RegisterService Register Service DiscoveryService Discovery Service AccessService Access WorkflowWorkflowSOA Layer

User MgmtID MgmtID Mgmt User Environment MgmtUser Environment Mgmt Interactive Mgmt

Interactive Mgmt BillingBilling

Task MgmtIMG deploy & MgmtIMG deploy & Mgmt Task Dispatch

Task Dispatch Task ExecutionTask Execution Life Cycle mgmtLife Cycle mgmt

Resource MgmtLoad BalanceLoad Balance Error DetectionError Detection Monitoring & Metrics

Monitoring & Metrics

Authentication

Authentication

AuthorizationAuthorization

AuditingAuditing

General ProtectionGeneral

Protection

Security Mgmt

Disaster RecoveryDisaster Recovery

Calculation PoolCalculation Pool Storage PoolStorage Pool Network PoolNetwork Pool Data PoolData Pool Software PoolSoftware PoolResource Pool

ComputerComputer StorageStorage NetworkNetwork DatabaseDatabase SoftwareSoftwarePhysical Resource

Management Middleware

SaaS PaaS实用计算 MSP网络服务

Xen Vmware KVM ……

Eucalyptus OpenNebula AbiCloud Nimbus Deltacloud

操作系统虚拟化

硬件虚拟化

网络虚拟化

分布式文件系统

计算服务器集群 存储云

分布式数据库系统

……

……

桌面虚拟化

计算节点

大型机

计算节点

计算节点

服务器

计算节点

计算节点

计算节点

工作站

Storage Disk Tape

Disk Array Storage ……

其他设备

网络传输

机电运维

负载管理

云计算服务层

云计算管理层

云计算虚拟化层

云计算存储层

云计算硬件层

存储虚拟化