Virtual(ization) Reality Check

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Nov 14, 2013 (3 years and 5 months ago)

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Minneapolis / St. Paul Computer Measurement Group


Spring 2006

1

Virtual(ization) Reality Check



James (Jim) Vence


Technical Solutions Manager

IBM Global Services

May 18, 2006

2

Discussion Points

IT Optimization Approaches

Brief History of Virtualization

Intel Virtualization

Case History

Lessons Learned


3

About The Presenter

4

Standard Disclaimer Time

My views do not
necessarily reflect those
of my employer (even
though I am often right
about these things !!!)



5

Logical Consolidation / Shared Servers

Systems Rationalization

Physical Consolidation / Virtualization

Three approaches to IT Optimization

Do you really
need six separate
accounting
systems?

These are not mutually exclusive!

Reduce server
images, optimal
use of HW

Reduce physical
server footprints,
environmentals

6

Physical Consolidation / Virtualization

Virtualization adds a layer of abstraction between the
applications and the hardware.

HTTP

HTTP

HTTP

HTTP

C++

C++

C++

C++

DB

DB

DB

DB


Hardware


Op Sys

Op Sys

Op Sys

Op Sys


Virtual OS / Firmware


7

Logical Consolidation / Shared Hosting

With “stacking” of applications, applications are closer to the
hardware, your server has more cycles to spend on running
programs than context switching operating systems.

HTTP

HTTP

HTTP

HTTP

C++

C++

C++

C++

DB

DB

DB

DB


Hardware



Operating System


8

A Brief History of Virtualization


1967


IBM System /370 with Virtual Memory Support


1972


First release of VS1


Virtual Memory Operating System


1974


VM/CMS


First release of “Hypervisor” based OS


1988


Mainframe PR/SM (Processor Resource/System Manager)


1999


User
-
Mode Linux Project started


1999


Adoption of Storage Area Networks (Storage Virtualization)


1999


VMWare Workstation Released (later known as GSX)


2001


VMWare Enterprise Server (ESX) Released


2001


IBM / HP Support for Logical Partition on Unix technology


2001


HP support for vPAR (soft partition) technology


2002


Sun Solaris Container Technology


2003


IBM SAN Volume Controller Technology




9


Intel Virtualization is in the spotlight

Floor Space(*)

Intel / VMWare

Isolation

HW utilization (*)


Intel/VMWare:

Commodization of HW, Windows
and Linux prevalence, VMWare technololgy
breakthrough.


Isolation:
Still provides lines of business with a
“my server” feel


easier adoption in the
enterprise.



HW Utilization (*)
: Better use of available
processor and memory, and I/O for systems with
low/moderate I/O requirements.


Floor Space(*): Energy, HVAC, Footprint

.

* While logical consolidation provides the potential for better utilization in
these areas, virtualization tends to have a “good enough”, and more
favorable to implement benefit.

Minneapolis / St. Paul Computer Measurement Group


Spring 2006

10

Physical

(Partitioning,

Interconnections)

Application

Container

vm Mgmt

Hypervisor


Level 2

(Host OS)


Level 1

(no Host OS)


Para
-
Virtual




CPU

Virtualization market for
Intel/AMD Servers

VT
(Vanderpool)

Intel

Pacifica

AMD

VMware ESX

VMware Server

(GSX)

Microsoft

Virtual Server

Sun Solaris

Containers

Virtuozzo

(SWsoft)

Xen

XenSource

IBM Scalability

(x445, x460)

Virtual Iron

(Infiniband)

VMware

VirtualCenter

Virtual Iron

Virtual Iron 3

Virtuozzo

ESXRanger

Higher Mgmt

Backup, HA, P2V

PlateSpin

PowerConvert/Recon

Symantec

LiveState

Veritas

VCS

VMware

P2V

IBM

VMM

HP

VMM

IBM

TSM, TPM, RDM

11

Case History


Engaged by financial institution to consolidate server infrastructure and
migrate servers to an IBM data center in Southbury, CT.



The Server Consolidation project began in March 2004 and will be
completed in May 2006.

12

Technologies Used


IBM HS20 and HS40 Blade Center


VMware ESX server 2.5


Virtual Center with VMotion


Application Stacking


IBM Enterprise Storage Solution


XSeries Servers 445, 360


pSeries 650 (8
-
way), 570 (16
-
way), 520

13

700
30
0
200
400
600
800
Physical Servers
Wintel
Unix
Initial Server Environment


700 physical Windows servers/images


30 physical Unix servers and 32 Unix images

700
32
0
200
400
600
800
Images
Wintel
Unix
14

Consolidation


Utilize Blade Center technology,
VMware ESX server, and
application consolidation to achieve
overall server environment
consolidation.



Results for Windows:


Physical Consolidation: 4 to 1


Logical Consolidation: 2 to 1



Results for UNIX


Physical Consolidation: 6 to 1


Logical Consolidation: 2 to 1

700
30
700
32
175
5
350
16
0
100
200
300
400
500
600
700
Pre Consolidation
Post
Consolidation
Wintel Physical
UNIX Physical
Wintel images
UNIX Images
15

Application Stacking


Application stacking was able to achieve:


A 4 to 1 consolidation of a Citrix Farm


A 3 to 1 consolidation of a Databases


A 2 to 1 consolidation of other Applications


And a 20% reduction of database instances

16

Benefits of the Consolidation


Significant reduction in operating cost


Significant reduction in software license cost


Less space and facilities costs required


Environment easier to manage


Improved availability.


Fewer Break/Fix problems for applications.

17

Lessons Learned


Processors are seldom the tipping point


Memory, I/O, 32
-
bit limitations (e.g. file descriptors)


Horizontal scaling / n
-
tier architectures prevalence


Vertical scaling and stacking within tiers possible.


Consider capacity slush funds:


If you virtualize, have an exit plan to standalone


If you consolidate, exit plan for a de
-
consolidation.


Consider support implications


Configuration Management Databases and Systems


Collaboration with application staff (optimize applications)


Minneapolis / St. Paul Computer Measurement Group


Spring 2006

18

Thank You


Jim Vence

Certified IT Architect

IBM Global Services

jvence@us.ibm.com


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