Cloud - Stanford Universitynetseminar.stanford.edu/past_seminars/seminars/Cloud.pdf · What are the...
Transcript of Cloud - Stanford Universitynetseminar.stanford.edu/past_seminars/seminars/Cloud.pdf · What are the...
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Cloud Computing
Andy Bechtolsheim Chairman & Co-founder, Arista Networks
November 12th, 2008
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What is Cloud Computing?
The Fifth Generation of Computing (after Mainframe, Personal Computer, Client-Server Computing, and the web)
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What is Cloud Computing?
The biggest thing since the web?
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How big is Cloud Computing?
$42B Estimated size of the cloud computing Infrastructure market in 2012, up from $16B in 2008, IDC October 2008
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Projected Cloud Spending (IDC 2008)
Cloud Spending is growing 6X faster than traditional IT spending
Year 2008 2012 Growth
Cloud IT Spending $16B $42B 27%
Total IT Spending $383B $494B 7%
Total – Cloud Spend $367B $452B 4%
Cloud / Total Spend 4% 9%
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Worldwide IT Cloud Spending 2012
Source: IDC October 2008
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What is Driving Cloud Computing?
• In one word: economics • Faster, simpler, cheaper to use cloud apps • No upfront capital required for servers and storage • No ongoing operational expenses for running datacenter • Applications can be accessed from anywhere, anytime
Customer Perspective
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What is Driving Cloud Computing?
• Easier for application vendors to reach new customers • Lowest cost way of delivering and supporting applications • Ability to use commodity server and storage hardware • Ability to drive down data center operational cots • In one word: economics
Vendor Perspective
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Quote of the Day
Over the long term, absent of other barriers, economics always win!
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What are the Barriers to Cloud Computing?
• #1 Data Security • Many customers don’t wish to trust their data to “the cloud” • Data must be locally retained for regulatory reasons
• #2 Latency • The cloud can be many milliseconds away • Not suitable for real-time applications
• #3 Application Availability • Cannot switch from existing legacy applications • Equivalent cloud applications do not exist
Customer Perspective
Not all applications work on public clouds
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What are the Barriers to Cloud Computing?
• #1 Service Level Agreements • What if something goes wrong? • What is the true cost of providing SLAs?
• #2 Business Models • SaaS/PaaS models are challenging • Much lower upfront revenue
• #3 Customer Lock-in • Customers want open/standard APIs • Need to continuously add value
Vendor Perspective
Each applications is unique
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The Private Enterprise Cloud
• Harness the advantages of clouds for the enterprise • Cost-effective datacenter infrastructure • Server and storage resource pools
• High Availability and Reliability in Software • Virtual application environment • Separation of processing and storage
• On-demand Application Deployment • Greatly increases server utilization • Prioritization based on business requirements
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Private Cloud Architecture Elements
• Server Virtualization • Enable any app to run on any server anytime
• Highly Available Storage • Network block and file servers
• Low latency, high-bandwidth network • Enable application mobility in the cloud
• Pre-emptive application scheduler • Implements business rules and priorities
• Low-cost industry standard servers • Transcend hardware failures with software
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Traditional Enterprise Datacenter Utilization
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Traditional Enterprise Datacenter utilization is often below 20%
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Virtualized Enterprise Datacenter Utilization
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Virtualization significantly improves average server utilization
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Cloud Enterprise Datacenter Utilization
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Cloud computing further increases average server utilization
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Enterprise Private Clouds
• Significantly improves average server utilization • Driving corresponding reductions in CAPEX and OPEX
• Allows the use of low-cost server and software hardware • Further reducing CAPEX
• Reduces power consumption • Further reducing OPEX
• Increases control over resource allocation • Scheduler implements business priorities
• Improves application and data availability • Consistent mechanisms to deal with HW failure
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Cloud Computing Summary
• Move the application to “the cloud” • Decouple the user and datacenter location
• Software as a service business models • Google/Yahoo/Amazon/Facebook/etc
• Similar benefits with enterprise applications • Salesforce, Netsuite, SugarCRM
• Similar benefits for internally developed applications • Makes software easy to deploy across multiple sites
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Conclusions (cont)
• Cloud Computing is the fastest growing part of IT • Tremendous benefits to customers of all sizes • Cloud services are simpler to acquire and scale up or down • Key opportunity for application and infrastructure vendors • Public clouds work great for some but not all applications • Private clouds offer many benefits for internal applications • Public and private clouds can be used in combination
Economic environment is accelerating adoption of cloud solutions