Virtualization Myths and Realities Exposed The Circuit

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Virtualization Myths and Realities: MYTH

“My business has only
a few (1-3) servers.
My infrastructure is too
small to realize the
financial benefits of
Virtualization.”



“My business is too small to realize the financial benefits of Virtualization.”

► Virtual Utility Hosts
• Multi-tenant infrastructure to enable many companies to share the
expense and the benefit of virtualization.
• Many Virtual Hosts are auditable and can meet many compliance
levels.
• Before investing, be sure to choose the host with the correct:
o Audit & Compliance levels
o Service Level Agreement

► Free Hypervisors
• All major hypervisors have a free version.
• Will sacrifice top-end features (live migration, HA)
• Financial benefit of consolidation can be realized with
as few as 2 servers.



“The requirement for shared
storage makes Virtualization
an expensive proposition.”



“The requirement for shared storage prices me out of the Virtualization market.”

► Shared Storage is only required for Enterprise-level features.
• Live Migration, High-Availability and clustering require shared storage.
• Without shared storage you can still see benefits of Virtualization.
o Server Consolidation
o Streamlined Management
o Rapid Deployment and Reconfiguration

► There has been a major revolution in storage driven by Virtualization.
• Many storage systems exist for companies with modest budgets.
o iSCSI
• Equallogic
• Lefthand
o Fiber Channel
• HP MSA
• EMC AX-4/5



“I’ve decided to look at other
platforms because everything
I hear says VMware is the
highest-cost Virtualization
platform.”



“I’m looking elsewhere because VMware is the most expensive platform.”

► The “free” hypervisors don’t have Enterprise-level features.
• Hyper-V requires System Center Virtual Machine Manager.
• XenServer requires XenCenter
• VMware ESXi is free and is directly comparable to these free
editions.

► VMware does potentially have the highest initial software cost
► VMware scales more cost-effectively than Hyper-V or XenServer.1
• The recommended cost-comparison metric is cost per payload
• As an infrastructure scales, resource efficiencies of scale allow
VMware to “Do more with less.”
o Higher I/O Scalability
o Transparent Page Sharing (RAM Deduplication)
o Large memory pages
o 8-way Virtual SMP

[1] Taneja Group Technology Analysts - 2009



“My code/application will break
in a virtual environment
because of how Virtualization
changes the Operating System.”



“Virtualization will break my application.”

► All of the major modern hypervisors natively support many Operating
Systems.
• Hyper-V – All Microsoft 2008 editions and SUSE versions
• XenServer - Windows editions from 2000 SP4 and 40+ Linux editions
• VMware – Every Windows edition 3.51+ and 60+ Linux Editions

► All current-version Microsoft products are fully supported and tested on
VMware, Hyper-V and Citrix XenServer
► Oracle DB has limited support on VMware, Hyper-V and Citrix XenServer
• Fully-supported on OracleVM
► Custom-developed apps should be fully tested prior to virtualizing production



“My application currently runs
on a server with a dual-core
2.4GHz processor.

How can I possibly replace
this with a VM with only
1GHz of processor?”



“My existing server has multiple cores, how can my app live without them?”

► Industry average server CPU utilization is between 5%-7%.1
• Industry average peak CPU utilization is 22%
for less than 30 minutes daily.
► Industry average CPU speed is 2.23GHz.1
► 7% (CPU average) of 2230MHz is 156 MHz.
• 22% (CPU average peak) of 2230 MHz is 491 MHz.
► Custom-developed apps should be fully tested prior to virtualizing production

[1] Gartner - 2010



“Everything I read as well
as my years of experience
tell me that my transactional
SQL Server/Exchange Server
cannot possibly run
efficiently as a virtual.”



“SQL and Exchange are too transactional to run effectively in virtual machines.”

SQL and Exchange are fully-supported by Microsoft as Virtual Servers
• Current version hypervisors are 95%+ CPU efficient compared to
physical hardware.1
• Modern virtual hosts are capable of sustaining 350,000+ IOPs2
• Individual VMs are capable of sustaining 120,000+ IOPs

[1] Performance Labs, Inc. – 2010 | [2] VMware, Inc - 2009



“SQL and Exchange are too transactional to run effectively in virtual machines.”

A vSphere hosted DB cluster holds the world records for database
performance and price/performance in an x86 architecture.
• Ran 1,316,882 Composite Queries per Hour (QphH), 13% higher than
the next best performance.
• Used 37% less server hardware than that used for the second best
performance result.
• Achieved a price/performance of US $0.70 per QphH, 7.7 times better
than that of the previous performance record holder.
• Took 16 minutes and 23 seconds to load 1 TB database at a rate of
3.7 TBs per hour, a load time 8.7 times faster than that of the
previous performance record holder.

[1] TPC-H Benchmarks, Inc. – 2010


Case Closed

Questions?

Bill Cashman: bill.cashman@peak10.com


Virtualization Myths and Realities Exposed The Circuit

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