09ntc server virtualization session slides

Peter Campbell, Techcafeteria August, 2008

Virtualization

What the Dramatic Changes in Server Management Mean to Us


• This is a Traditional Server Room

QuickTime™ and a decompressor

are needed to see this picture.
















• This is a Virtualized Server Room




On average, 10% of server processor is utilized per server*.

*per IDC




Virtualization allows for maximized use and dynamic allocation of processing power


Energy Use and Server Budget are Reduced






Server Recovery and Backupis as Easy as…


Drag n’ Drop Backup


Server Templates




Mixture of Operating Systems on One Server


24/7 Availability




Instant Testing Environments




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.



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.


Hypervisor Dynamically Adjusts VM Hosts to Best Use Resources


Load Balancing and Automatic Failover Insures Stability


Reduced Costs, Energy Efficiency, Manageability


• 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



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



Questions



Virtualization Scenarios

•Matthew Eshleman•Director of Professional Network Services

•Community IT Innovators

•[email protected]

•www.citidc.com


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


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


Small Office Virtualization

• Single SBS Server• Server out of

warranty & out of space

• Additional services required• Accounting server• Terminal server• Intranet• etc


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


Mid Sized Consolidation

• 2-6 existing physical servers• Increasing application requirements• Increasing availability requirements• Maxing out electrical system• Maxing out cooling system


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


Enterprise Virtualization

• Appropriate starting at 4-8 physical servers

• High availability• Highly flexible and expandable• Dedicated IT staff• Significant investment


Enterprise VirtualizationBenefits

• Lowered Hardware Costs

• Reduced Warranty Expense

• Reduced Energy Consumption

• Improved HW utilization• High availability• Flexibility

Risks

• Software costs• Complexity• Management


Virtualization Conclusions

• Virtualization can be used in most cases

• Requires appropriate planning• Provides additional flexibility and cost

savings• Relatively low barrier to entry


QUESTIONS?


TXT Your Session Evaluation!

TXT NTC178 to 69866

Or complete online at http://nten.org/ntc-eval or on a paper evaluation available in the session room.

Each completed session evaluation enters you to win a FREE 2010 NTC Registration!

09ntc server virtualization session slides

Technology