09ntc server virtualization session slides
DESCRIPTION
Slides from the 2009 Nonprofit Technology Conference Session on Server Virtualization. These slides introduce the main concepts and suggest approaches for small, medium and large business scenarios. the latter set of slides are by matt eshelman of CITIDC, who presented with me.TRANSCRIPT
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Peter Campbell, Techcafeteria August, 2008
Virtualization
What the Dramatic Changes in Server Management Mean to Us
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Peter Campbell, Techcafeteria August, 2008
• This is a Traditional Server Room
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
are needed to see this picture.
QuickTime™ and a decompressor
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QuickTime™ and a decompressor
are needed to see this picture.
QuickTime™ and a decompressor
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Peter Campbell, Techcafeteria August, 2008
• This is a Virtualized Server Room
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Peter Campbell, Techcafeteria August, 2008
On average, 10% of server processor is utilized per server*.
*per IDC
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Peter Campbell, Techcafeteria August, 2008
Virtualization allows for maximized use and dynamic allocation of processing power
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Peter Campbell, Techcafeteria August, 2008
Energy Use and Server Budget are Reduced
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Peter Campbell, Techcafeteria August, 2008
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Server Recovery and Backupis as Easy as…
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Peter Campbell, Techcafeteria August, 2008
Drag n’ Drop Backup
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Peter Campbell, Techcafeteria August, 2008
Server Templates
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Peter Campbell, Techcafeteria August, 2008
Mixture of Operating Systems on One Server
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Peter Campbell, Techcafeteria August, 2008
24/7 Availability
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Peter Campbell, Techcafeteria August, 2008
Instant Testing Environments
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Peter Campbell, Techcafeteria August, 2008
How It Works (1)
• Server virtualization uses a Hypervisor - a streamlined Operating System with connectivity, virtualization and management features.
• Intel and AMD include virtualization support on specific chipsets; this is required for some server virtualization products.
Peter Campbell, Techcafeteria August, 2008
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Peter Campbell, Techcafeteria August, 2008
How It Works (2)
• Virtual machines (VMs) are loaded into memory by the Hypervisor. They emulate standalone servers.
• Users connect to VMs, but VMs can be copied and moved without interruption.
• Load Balancing and Fault Tolerance can be used to mirror VMs and insure business continuity.
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Peter Campbell, Techcafeteria August, 2008
Hypervisor Dynamically Adjusts VM Hosts to Best Use Resources
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Peter Campbell, Techcafeteria August, 2008
Load Balancing and Automatic Failover Insures Stability
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Peter Campbell, Techcafeteria August, 2008
Reduced Costs, Energy Efficiency, Manageability
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Peter Campbell, Techcafeteria August, 2008
• This is all still pretty new - assumptions about proper configuration and server requirements still vary.
• Virtualized databases can be impacted by conflicts between virtualization and caching.
• There is some debate about whether domain controllers should be virtualized.
• Smaller vendors might resist supporting virtualized applications; large vendors won’t.
Potential Issues
Peter Campbell, Techcafeteria August, 2008
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Peter Campbell, Techcafeteria August, 2008
Products
• Commercial• VMWare (Server, Desktop, Fusion)• Citrix Xen Server and Desktop• Microsoft Virtual Server, WinServer 2008• Virtual Iron
• Open Source• Xen (FOSS version of Citrix product)• KVM• VirtualBox
Peter Campbell, Techcafeteria August, 2008
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Peter Campbell, Techcafeteria August, 2008
Questions
Peter Campbell, Techcafeteria August, 2008
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Peter Campbell, Techcafeteria August, 2008
Virtualization Scenarios
•Matthew Eshleman•Director of Professional Network Services
•Community IT Innovators
•www.citidc.com
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Peter Campbell, Techcafeteria August, 2008
Tools & Terminology
• Virtualization Hypervisor• Physical to Virtual Conversion Software• Storage Area Network (SAN)• iSCSI or Fiber Channel SAN
Connection• Storage Management (LUN)• Backup & Disaster Recovery RPO &
RTO
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Peter Campbell, Techcafeteria August, 2008
Backup & Disaster Recovery
• Backup• What are the RPO and RTO requirements?• Use existing backup to tape or disk• Online backup services• Backup appliances
• Disaster Recovery• Part of business continuity• Manual or Automated systems
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Peter Campbell, Techcafeteria August, 2008
Small Office Virtualization
• Single SBS Server• Server out of
warranty & out of space
• Additional services required• Accounting server• Terminal server• Intranet• etc
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Peter Campbell, Techcafeteria August, 2008
Small Office VirtualizationBenefits
• Preserve existing server• Expand HW capacity• Minimal user disruption• Lower HW Costs• Adds flexibility
Risks
• Adds complexity• Need to adjust
backup plan• Single point of
failure
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Peter Campbell, Techcafeteria August, 2008
Mid Sized Consolidation
• 2-6 existing physical servers• Increasing application requirements• Increasing availability requirements• Maxing out electrical system• Maxing out cooling system
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Peter Campbell, Techcafeteria August, 2008
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Peter Campbell, Techcafeteria August, 2008
Mid Sized ConsolidationBenefits
• Lowered Hardware Costs
• Reduced Warranty Expense
• Reduced Energy Consumption
• Improved HW utilization
Risks
• Solution needs to be appropriately designed
• Consider backup & disaster recovery requirements
• Adds complexity• Server sprawl
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Peter Campbell, Techcafeteria August, 2008
Enterprise Virtualization
• Appropriate starting at 4-8 physical servers
• High availability• Highly flexible and expandable• Dedicated IT staff• Significant investment
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Peter Campbell, Techcafeteria August, 2008
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Peter Campbell, Techcafeteria August, 2008
Enterprise VirtualizationBenefits
• Lowered Hardware Costs
• Reduced Warranty Expense
• Reduced Energy Consumption
• Improved HW utilization• High availability• Flexibility
Risks
• Software costs• Complexity• Management
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Peter Campbell, Techcafeteria August, 2008
Virtualization Conclusions
• Virtualization can be used in most cases
• Requires appropriate planning• Provides additional flexibility and cost
savings• Relatively low barrier to entry
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Peter Campbell, Techcafeteria August, 2008
QUESTIONS?
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Peter Campbell, Techcafeteria August, 2008
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