cloud computing seminar
TRANSCRIPT
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CLOUD COMPUTING
Common, Location-Independent, Online Utility On-Demand
A. Aravindan Arun,Sr. System AdminDate: 11/01/2013
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Agenda
Introduction Evolution of Computing Compare with Traditional Server Compare with Virtualization Server Cloud Computing Advantages / Benefits Cloud Computing Types Service Models Summary
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Evolution of Computing
Client / Server - Distributed
Web Services – Internet Technology
Grid Computing – HPC
Utility Computing – Metered Service
Cloud Computing Next Generation
Mainframe – Centralized
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Introduction
Cloud is Internet-based computing, whereby shared computing resources (e.g., networks, servers, storage, application and other services) that can be rapidly provisioned and released with minimal management effect.
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The Traditional Server Concept
Pros Easy to conceptualize Fairly easy to deploy Easy to backup Virtually any
application/service can be run from this type of setup
Cons Expensive to acquire and
maintain hardware Not very scalable Difficult to replicate Redundancy is difficult to
implement Vulnerable to hardware
outages In many cases, processor
is under-utilized
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The Traditional Virtualization Concept
Pros Resource pooling Highly redundant Highly available Rapidly deploy new
servers Easy to deploy Reconfigurable while
services are running Optimizes physical
resources by doing more with less
Cons Slightly harder to
conceptualize Slightly more costly (must
buy hardware, OS, Apps, and so on...)
Difficult auto scaling
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Technologies for Agility
Virtualization The ability to run multiple Operating System on
single physical system and share the underlying hardware resources.
Utility Computing Offering computing resources as a metered service
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Cloud Computing Framework
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Cloud Computing Advantages
On Demand Services Speed of Delivery Cost / Benefit ratio Software as a Subscription Reduced Software Maintenance Increased Scalability Elastic Nature User have full control over their instance
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Benefits
Lower total cost operations (Pay-As-You-Go) Save Infrastructure setup & Maintenance Rapid, Request-driven provisioning Easy monitoring, managing & reports Storage and Retrieval of data Uninterrupted and Persistent Data Storage High Availability Automated and even distribution of traffic Flexible scaling of Resources
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Cloud Computing Characterized Consumer Perspective
Single point of access - Self services with rich user experienced Virtualization - Increased system utilizations Automation - Automated service request and fulfillment Agility - Rapid Services provisioning Flexibility - Massive scaling of IT services as needed Usage Account - Utility based usage metrics Service Management - Modular services managed access
Infra/Platforms/application/business stacks Security - Shared services delivered across trusted
domains Cost Efficiency - Reduced CapEx with minimal to no asset
ownership
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Cloud Computing Types
Public Cloud Private Cloud Hybrid Cloud
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Public Cloud
Infrastructure provisioned on-demand using publicly available resources.
Computing resources are provided to customers through self-serve interface.
Scalable computing resource on a temporary or periodic basis.
Ability to acquire access to highly-quality pools of resources immediately and with minimal capital investment.
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Public Cloud Benefits
Reduce Infrastructre cost and maintain cost Rapidly increase on-demand services,
storage capacity and other need Public cloud available anywhere, anytime Scalable to meet individal or company needs High redundancy and available
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Private Cloud
Private cloud avail within the corporate firewall using their own hardware.
Flexible to organization needs. The Cloud architecture is dedicated to the
organization and is not shared with other organization.
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Private Cloud Benefits
Data will be safe and secure Scalable Bandwidth Access Suitable and highly support SLA Reliability
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Hybrid Cloud
Hybrid Cloud = Private Cloud + Public Cloud Private cloud can extends their boundaries to
access additional computing resources in the public cloud using secure communication (VPN).
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Hybrid Cloud Benefits
Flexible computing resources Continued reduction of cost expenses Improved resource utilization and more
efficient system
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Community Cloud
A Cloud infrastructure that is shared by several organizations
Often delivered securely via private network. Ability to bill the organization separately. Shared SLA's
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Service Delivery Models
Infrastructure as a Service (IaaS) Platform as a Service (PaaS) Software as a Service (Iaas)
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Service Delivery Models
Source: Cloud Computing Use Cases, a white paper produced by the Cloud Computing Use Case Discussion Group, Version 2.0, 30 October 2009
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Services Delivery Models
Infrastructure as a Service (IaaS)
Consumer can utilize “Fundamental Computing Resources” such as Processing Unit, Storage, Networking and Operating System.
Consumer can control the operating system, Storage, Application.
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IaaS Benefits
Low IT Capital Investment and on-going operation Cost
Shorter delivery time and Fully scalable Higher Level of Value-added services Reduces Maintenance, Monitoring and
Management cost Easy to Manage
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Services Categories
Platform as a Service (PaaS)– Allows users to create their own cloud based
application using provider specific API's and/or libraries.
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PaaS Benefits
Low Infrastructure & Lower Risk Lightweight development IDE Easy and quick deployment Reusable code and business logic Integration with other web services Centralized information management Secured and customized access Easy Collaboration
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Services Categories
Software as a Service (SaaS)– Consumers purchase the ability to access
and use an application or service that is hosted in the cloud.
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SaaS Benefits
Shorter deployment time Global Availability Easier upgrades Lower Initial costs High Adoption
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Cloud Security
Claims Based Authentication
A trusted authority (Issuer) issues a signed securityToken containing a set of claims (credentials) which is given to the application for validation.
The application will authenticate the user if the security token is valid and signed by a trusted issuer
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Cloud of the future is an ecosystem
Source: Cloud Computing Use Cases, a white paper produced by the Cloud Computing Use Case Discussion Group, Version 2.0, 30 October 2009
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Benefits & Summary
Reduced Costs Easy to take snapshot – Storage, Instance Highly Automation Flexibility More Mobility Management Automation Lower Maintenance Cost Deploy Project Faster Scale as needed Location independent