e tech vmware presentation

© 2009 VMware Inc. All rights reserved

Virtualization Simplified - Guide to Server Virtualization

Joe Penney – Technology Coordinator, Madison Plains Local School District

Matt Honigford – Technical Account Manager, VMware

Madison Plains Local School DistrictHome of the Golden Eagles

http://www.mplsd.org/Home/tabid/36/Default.aspx

What’s the purpose of this session?

To help you prepare…



Fiscal Impact of Virtualization

Traditional Model

10 Physical Servers

Replacement of 2 Servers** @ $5,000.00* = $10,000.00

Total: $10,000.00 Yearly

Virtualized Model

2 Physical Servers (10 Virtual Servers)

1 Server per 2-3 years** @ $5,000.00 = ($1,667.00 per year(3))

ESX Software: $934.00 per ESX/yearly = $934.00 x 2 = $1,868.00

Total: $3,535.00 Yearly

Assumptions: *Physical Server Cost - $5000.00**BP's - 20% Renewal per Year

Power Consumption Dell PE2950



Key Features of Virtualization

Encapsulation Hardware Independence

Run a virtual machine on any server without modification

Partitioning

Run multiple virtual machines simultaneously on a single physical server

Isolation

Each virtual machine is isolated from other virtual machines on the same server

Virtual machines encapsulate entire systems (hardware configuration, operating system, apps) in files



% o

f App

licat

ions

Application Performance Requirements

20,000

800 Mb/s

16 GB

2 vCPU

1. Source: VMware Capacity Planner assessments

ESX 3.5

100,000

9 Gb/s

64 GB

4 vCPU

ESX 4

> 350,000

30 Gb/s

255 GB

8 vCPU

< 10,000

380 Mb/s

< 4 GB

1 vCPU

ESX 3ESX 220% - 30% <10% - 20% <2% - 10%30% - 60% Overhead

>95% of Apps Match Native Performance on Virtual Machines



VMware vSphere enables you to use all those cores…

1990 1995 2000 2005 2010 20151

10

100

1000

Oracle

SQL Server

Exchange

Avg. Cust, Application

Avg. Four Socket

Web Servers

Year

Nu

mb

er

of

Co

res u

se

d

Most applications don’t scale beyond 4/8 way

Virtualization provides a means to exploitthe hardware’s increasing parallelism

ESX

4.0

VMWare ESX Scaling:Keeping up with core counts

ESX

Futu

re



Relative Scaling Ratio

51.08

1 vCPU 2 vCPU 4 vCPU

45.22

94.04

79.88

147.24

133.12

VM

Native

ESX 4.0 Performance with SQL Server 2008

ESX achieves 90% of native performance on 4.0 vCPU VM

Workload transaction latency unchanged between ESX 4.0 and Native



How do I begin?

By Developing a Plan…



VMware vSphere (ESX4) – Deployment Options



Perform Assessment Using Capacity Planner

VMware Capacity Planner is…

• An optimized business and decision support tool

• Used to perform faster, more accurate and benchmarked consolidation assessments from the datacenter to the desktop

Capacity Planner provides:

• Complete state of the infrastructure (As-Is)

• Comprehensive future state consolidation recommendation and roadmap (To-Be)



Capcity Analysis

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tiliz

atio

n

Hour of Day

Server Hourly Utilization

CPU Disk I/O Network I/O Memory

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tiliz

atio

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Hour of Day

Desktop Hourly Utilization

CPU Disk I/O Network I/O Memory

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tilization

Hour of Day

Good Consolidation

Server B CPU Server A CPU

Detailed Analysis

Time Based: compatible systems, hourly patterns, business/ peak hours

All Resources: CPU, Memory, Disk, Network

Conversion Factors: CPU speedup, virtualization overhead, virtualization Benefits

Comparisons: hardware, groups, thresholds

Output: Consolidation blueprint with VM configuration and recommendations



Or use vCenter’s Guided Consolidation

• Automatically discovers physical servers

• Analyzes utilization and usage patterns

• Converts physical servers to VMs placed intelligently based on user response

• Lowers training requirements for new virtualization users

• Steers users through the entire consolidation process

Analyze

Convert

Discover



What are my first steps?

Put the Plan into action…



VMware ESXi Architecture

• True thin hypervisor: 70MB

• No general-purpose OS

• Easy to install / configure

• Very small security attack surface

• Direct driver model = I/O scaling

• Drivers optimized for VMs

• Special treatment for drivers

vSphere ESXi as a Solid Foundation

ESXi 4.0



VMware vCenter for “Single Pane of Glass” Management

Datacenter

Cluster

Stand-aloneHost Resource Pool

• Centrally manage Virtual Machines• Instantly provision new servers with

standardized templates• Dynamically move workloads across

servers without service interruption Monitor system availability and performance Automate notifications and alerting Integrate Disaster Recovery Backup Solution



Use VMware Converter To:

• Perform Physical to Virtual P2V conversion of your existing servers

• Resize hard disk size (both up and down) during P2V

• Convert both Windows and Linux machines

• Provide DR solution by scheduling P2V of remaining physical server on regular basis

Physical to Virtual Machine Converter



What are the most utilized features?

Enterprise Options/Simple Configuration…

Live Migration Of Virtual Machines with VMotion

What is it?• Live migration of virtual machines from one physical server to another

Environment Impact•Zero downtime to virtual machines•Continuous service availability•Complete transaction integrity•Supported on Fibre Channel and iSCSI SAN and NAS (NFS)

SharedStorage

High availability with VMware HA

What is it?

• Automatic restart of virtual machines in case of server failure

What is its impact?

• Cost effective high availability for all applications

• No need for dedicated stand-by hardware

• None of the cost and complexity of clustering

Resource Pool

X



Resource Optimization with DRS

What is it?

• Dynamic balancing of computing resources across server pools

• Intelligent resource allocation based on pre-defined rules

Impact

• Prioritize server resource availability

• Add hardware dynamically to avoid over-provisioning to peak load

• Automate hardware maintenanceServer Pool

User Demand



Zero Downtime Maintenance with DRS

Eliminate planned downtime!ResourcePool

EnterMaintenance Mode

Perform MaintenanceMaintenance Complete

• What is it?• Maintenance Mode moves machines

to alternate hosts in the pool.

• What is its impact?• No application outage• No user impact• No server configuration changes



VMware VMFS File System and Storage VMotion

Abstract

• Distributed Cluster File System (VMFS) allows any type of storage to be attached and used with VMware

Mobilize

• Storage VMotion moves virtual machine disks from one storage location to another without disruption or downtime



Significantly improve storage utilization

Eliminate need to over-provision virtual disks

Reduce storage costs by up to 50%

App

OS

App

OS

App

OS

• Virtual machine disks consume only the amount of physical space in use

Virtual machine sees full logical disk size at all times

Full reporting and alerting on allocation and consumption

vStorage Thin Provisioning

Physical Storage

Virtual Disks

10GB

20GB 40GB 100GB

10GB20GB 10GB40GB

ESX

30GB70GB



App

OS

App

OS

App

OS

X

Zero downtime, zero data loss

No complex clustering or specialized hardware required

Single common mechanism for all applications and OS-es

Single identical VMs running in lockstep on separate hosts

Zero downtime, zero data loss failover for all virtual machines in case of hardware failures

Integrated with VMware HA/DRS

VMware ESX VMware ESX

VMware Fault Tolerance

FTFT



vNetwork Distributed Switch

Aggregated datacenter level virtual networking

Simplified setup and change

Easy troubleshooting, monitoring and debugging

Enables transparent third party management of virtual environments

OS

APP

OS

APP

OS

APP

OS

APP

OS

APP

OS

APP

OS

APP

OS

APP

OS

APP

VMware vSphere™

vNetwork Distributed SwitchvSwitch vSwitch vSwitch

Cisco Nexus 1000V



Some Additional Best Practices

Planning for success…



Leverage VMware Update Manager

Update Manager

Eliminates manual tracking of patch levels of ESX Server hosts and virtual machines

Automates enforcement of patch standards

Reduces risk through snapshots and offline virtual machine patching

• Automates patch management for ESX Server hosts and select Microsoft and RHEL virtual machines Scans and remedies online as well as

offline virtual machines and online ESX Server hosts

Snapshots virtual machines prior to patching and allows rollback to snapshot

OF

FL

INE



Improve Backups with Data Recovery and vStorage API’s

Move backup out of the virtual machine

• A single agent running on the proxy server rather than an agent on every virtual machine.

Eliminate backup traffic on the local area network • Utilize Fibre Channel tape devices

for virtual machine backups

Pre-integrated with major3rd-party backup products

Agentless file level backup



Storage is key!

Storage misconfiguration is responsible for ~80% of performance problems

Arrays expected to respond in about 10-20 ms

Excepted additional storage latency due to ESX about 100 us

ESX has demonstrated 350K IOPS or 250 Oracle DBs on one server

Use vSphere to optimize your storage

Guest

PhysicalHardware

Monitor

Guest

I/O Drivers

File System

Monitor

Virtual SCSI

File System



8,000 Mailboxes 16,000 Mailboxes

Server with 16 coresRunning one instance of Exchange

Server with 16 cores running 6 instances of Exchange

Application scale out may be better than sale up…



Take it from Experience…

Some lessons learned:

• Don’t P2V domain controllers!!!

• Don’t forget your Snapshots!!!

• Size storage correctly (IOPS/Capacity)

• Don’t change vSwitch names while running!

• Use nice switch (possibly one that supports VLAN’s)

• Segment traffic for VM’s/iSCSI/etc.

• Use redundant components whenever possible



OARnet and VMware Partnership

Agreement allows OARnet to distribute and license VMware solutions to Ohio colleges and universities• Reduce the current and future operating cost for K-12

education through aggregate purchase of VMware products • Expand program benefits through the inclusion of all education

(K-20)

Potential Savings: $130 million over 3 years• Reduction in hardware (servers, desktops) budgets• Reduction in operational and maintenance costs • “Green IT” due to lower use of energy and space

For information, go to http://www.oar.net and click on “Purchase VMware”


http://www.oar.net/


Q & A

Thank You!



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