09ntc Server Virtualization Session Slides

Virtualization
What the Dramatic Changes in Server Management Mean to Us

This is a Traditional Server Room

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 Backup is 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.
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.

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 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

Questions Peter Campbell, Techcafeteria August, 2008

Virtualization Scenarios
Matthew Eshleman
Director of Professional Network Services
Community IT Innovators
[email_address]
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 Virtualization
Benefits
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 Consolidation
Benefits
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 Virtualization
Benefits
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?

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09ntc Server Virtualization Session Slides

by Peter Campbell on May 02, 2009

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09ntc Server Virtualization Session Slides — Presentation Transcript