04 Decoding the VMware Universe
15 Virtual Desktop Delivery and Management
Options: Reducing Complexity, Increasing
A field guide to two virtualization worlds. BY JAN STAFFORD
VMware’s ecosystem of virtualization offerings is extensive, but the
wealth of choice may be confusing rather than helpful. Here we sift
through the various offerings. BY DAVID DAVIS
Desktop virtualization has centralized management of far-flung machines,
but the options remain dispersed and daunting. Kutz leads the way in
defining which virtual desktop technology might suit your company’s
needs. BY SCHLEY ANDREW KUTZ
tionality of third-party products.
Speaking of mazes, Davis also demys-
tifies how VMware’s management prod-
ucts fit into the IT Infrastructure Library
EDITOR’S ONSIDER this month’s (ITIL) framework. He maps the VMware
LETTER Virtual Data Center e- ecosystem with ITIL service and support
7 zine as a virtualization categories in a way that is easily transfer-
DECODING Who’s Who or, perhaps, able to many environments.
THE VMWARE What’s What. In this issue, we act as And Andrew Kutz is just the right
docents to VMware, the elder statesman guide to usher us through the desktop
7 virtualization world (see page 15). He
of server virtualization, and adventure
ITIL AND guides for the wild world of a new fron- garnered admiration and raised ire in his
tier: desktop virtualization. You’ll learn effort to fill gaps in VMware technolo-
7 more about the maze of products and gies with handy plug-ins. Kutz separates
technologies that make up VMware’s the hype from reality, categorizing desk-
VIRTUAL top virtualization platforms and then
virtualization ecosystem. Then you’ll
DELIVERY AND get what may be the most comprehen- dissecting current products in those
MANAGEMENT sive guide to desktop virtualization categories.
today, a technology that vendors have Kutz also explains how the short-term
7 pain—and there will be pain—of adopt-
rushed into with new approaches
and products. ing desktop virtualization is made bear-
Currently, VMware is the only server able by long-term gain. Besides, he says,
virtualization vendor with mature, the pain of migration is nothing com-
production-ready products that have pared with the cumulative day-to-day
exceeded a third release. Filling gaps in pain of managing desktops that are
management and migration has brought sprawled throughout the enterprise.
new tools, such as VMware Consoli- Why use Band-Aid point solutions when
dated Backup and Storage VMotion, you can truly mend an ailing system?
respectively. VMware has also ventured This issue’s two tours may not lead
into desktop virtualization with Virtual to Nirvana, but they should put things
Desktop Infrastructure. in perspective. Our piece on desktop
In this issue, IT expert David Davis virtualization helps separate plum
identifies the key VMware building approaches from the lemons. And a
blocks for a dynamic, production-level tour of the VMware ecosystem provides
virtualization environment (see page 4). a fresh look at a familiar world.
Then Davis explains how these features
fit together as well as what doesn’t and JAN STAFFORD, Editorial Director,
when you’ll need the additional func- Data Center Media Group, TechTarget
2 VIRTUAL DATA CENTER E-ZINE JUNE 2008
Simple as flipping a switch
Managing Virtualization with Virtual Appliances
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the VMware Universe
By David Davis
S VMWARE INC.’S virtu-
THE VMWARE alization technologies
UNIVERSE permeate data centers,
7 IF YOU’VE struggled IT professionals often
find themselves lost
THE VMWARE to get a handle on in a complex galaxy
7 VMware’s myriad of technologies and services that they
understand only vaguely. Data center
VIRTUAL offerings, this guide is managers perplexed by VMware’s myr-
iad virtualization options need to know
designed to cut through about the pieces of the ecosystem, how
OPTIONS vendor hype and they fit together and how to determine
7 which technologies best serve their
provide an unfiltered needs. This article aims to separate the
view of the technolo- wheat from the chaff and orient you
in this new world of the VMware
gies available for your ecosystem.
center. THE VMWARE ECOSYSTEM:
THE BUILDING BLOCKS
Just a few years ago, VMware Inc.
offered little more than a basic platform.
Now there’s depth and breadth in the
company’s various technologies. Indeed,
VMware provides almost everything
needed to build a complex, dynamic,
production-level virtualization environ-
ment. VMware’s partner universe has
also evolved from a handful to hundreds
of third-party software and hardware
companies offering products that may
4 VIRTUAL DATA CENTER E-ZINE JUNE 2008
replace, complement or fill a gap in (starter), Standard and Enterprise ver-
the VMware arsenal. sions (see sidebar on 3i below). For an
The VMware ecosystem isn’t a single enterprise network today, I recommend
monolithic product, but rather a patch- that you have at least one copy (that
work of different companies and is, one for each server) of the VMware
providers that work together to provide Infrastructure Enterprise edition because
VMware systems for myriad business you get all the Enterprise features.
environments. Essentially, the VMware The VMware ESX Enterprise edition
ecosystem includes VMware technolo- includes the following:
EDITOR’S gies, third-party software providers,
LETTER hardware providers, consulting services I VMware ESX Server
7 providers, education and certification I VirtualCenter Agent
DECODING vendors, and end users. I VMware Consolidated Backup
THE VMWARE Today, the most well-known VMware (VCB)
product is ESX Server: the completely I Distributed Resource Scheduler
redesigned big brother of GSX Server, (DRS)
ITIL AND which is the predecessor to the now-free I VMware High Availability (HA)
VMware Server. Over time, VMware I Virtual Machine File System 3
7 has developed ESX into a package of (VMFS 3)
products that is known as VMware I Virtual SMP
VIRTUAL Infrastructure (VI). I VMware Update Manager
DELIVERY AND In terms of VMware Enterprise edition I VMotion and Storage VMotion
MANAGEMENT virtualization, VMware ESX Server is
at the center of that universe. None of Of course, VMware has several other
7 these other products are useful without offerings, including Capacity Planner,
it. You can purchase ESX Server as a 3i VMmark for benchmarking and VMware
standalone version as well as Foundation Stage Manager beta for staging of virtual
for VMware Environments
WHEN PLANNING YOUR VMware ESX Server hardware, it is critical to ensure that it’s
compatible with VMware ESX. Fortunately, that isn’t difficult if you consult VMware’s
hardware compatibility lists. Server hardware vendors like Dell Inc., IBM Corp., and
Hewlett-Packard Co. offer powerful multicore servers with a ton of RAM from one of
them. With the introduction of VMware ESX Server 3i, these vendors will soon build
ESX Server 3i into their servers. That means that there is no VMware Server to install
or purchase separately; 3i is embedded. The release of the lower-cost and embedded
ESX Server 3i will expand the use of virtualization. If it comes with your server, why
not use it? —D.D.
5 VIRTUAL DATA CENTER E-ZINE JUNE 2008
guest systems. VIRTUAL DESKTOP INFRASTRUCTURE
There are VMware products other AND CONNECTION BROKERS
than those in the VMware Infrastructure VDI virtualizes your users’ desktop sys-
suite. As the popularity of VMware tech- tems and thus has tremendous benefits
nologies has grown, so have the number for disaster recovery, simplified manage-
of VMware partners (both official and ment, cost savings, security and more.
unofficial). The VMware Partner Cata- What really makes VDI work is its con-
log, for example, lists more than 150 nection broker, which maps thin clients
official companies. There are hundreds (which have replaced PCs) to the virtual
EDITOR’S of unlisted companies that provide parts guest operating system needed by or
LETTER of the ecosystem. assigned to that VDI user. Here are
7 In this article, however, we’ll limit our four leading VDI connection brokers:
DECODING discussion to products that are central
THE VMWARE to a successful, enterprise-level VMware 1. VMware’s Virtual Desktop Manager 2—
infrastructure. Let’s get a picture of that or VDM2, as it’s called—has recently
7 been released, and currently you can
infrastructure’s components by putting
ITIL AND the parts in functionality-centric cate- get a VDM starter kit for about $1,800.
THE VMWARE While the jury is still out on the best
gories, which are listed below:
7 connection broker, you should try
I Virtual desktop infrastructure VDM2 if you’re researching options.
VIRTUAL (VDI) and connection brokers
I Backup and recovery 2. Leostream’s Hosted Desktop Connection
MANAGEMENT I Disaster recovery (DR) Broker (HDCB) has been around for
I Virtualization and storage some time, and you can download a
7 I VI Client plug-ins free demo from the company’s website.
I Virtualization security
I Virtualization performance 3. With Citrix Systems Inc.’s purchase
management and capacity of XenSource, Citrix now offers Citrix
planning XenDesktop Server. The XenDesktop
I Virtualization infrastructure Server (currently in beta) connection
reporting broker works with VMware ESX Server.
I Physical-to-virtual (P2V) and
virtual-to-virtual (V2V) conversion 4. Provision Networks’ Virtual Access
Suite is now owed by Quest Software,
After we explore those functional and the product’s free demo is available
areas of VMware virtualization, we’ll on the company’s website, along with a
also look at how the ecosystem maps demonstration video.
with areas of the IT Infrastructure
Library (see “ITIL and the VMware You can also review the connection
Universe” on page 9) and other compo- broker comparison, which offers a more
nents of the VMware universe, such complete list. For more information on
as training (see “VMware Consulting, VDI, you can also read “How Can Vir-
Education and Networking” on page 7). tual Desktop Infrastructure Help You?”
6 VIRTUAL DATA CENTER E-ZINE JUNE 2008
BACKUP AND RECOVERY you to gain access to VMFS (i.e., the
AND DISASTER RECOVERY ESX Server file system). VCB can likely
While it is possible to run a traditional be used with your current backup pro-
backup client inside each of your virtual gram (such as CA’s BrightStor, IBM’s
guest operating systems, it isn’t the best Tivoli Storage Manager or EMC Corp.’s
option because you are doing file-level NetWorker).
backups and thus not getting many of But if you have a virtualization back-
virtualization’s backup-and-restore up program that works with VCB or
benefits. talks directly to the VMFS, you’ll be
EDITOR’S Assuming you purchased VMware better off, because it’s much easier do
LETTER Infrastructure Enterprise, you have image-level backups, differentials and
7 VMware Consolidated Backup. VCB is restores, and you will gain a graphical
DECODING still a young product, and there is some user interface (GUI) with a scheduler.
THE VMWARE confusion about it (for more informa- Here are some virtualization backup
tion, see my VCB FAQ article). VCB is technologies. And for how these backup
7 not a backup program. Rather, it allows tools stack up, see a comparison of
Education and Networking
MANY ENTERPRISE CUSTOMERS require consulting and implementation services. One
7 VMware virtualization consulting service is VMware Inc.’s consulting division, which
the company acquired when it purchased Foedus. Another option is outsourcing your
virtualized infrastructure to service providers such as BlueLock, which offers “infra-
structure as a service” to handle your VMware hardware, software and management
needs in its facility.
VMware’s ecosystem includes education, certification and training, and, of course,
some limitations. If you want to take the VMware Certified Professional (VCP) exam
for VMware certification, you need to sign up for VMware’s own in-house training
courses. Other self-training options exist, and I often recommend the following:
I Vmreference.com is a free VMware ESX Server reference chart that can be
downloaded and printed.
I Train Signal’s VMware ESX Server video training series includes 15 hours of
training on VMware Infrastructure suite.
And for some fun, check out the 37migrations.com website, which geographically
maps customers throughout the world that use VMotion and tells you how many
VMotion migrations have taken place each day. If you want to participate, you can
install the VI Client 2.5 37migrations plug-in that reports your migrations to the web-
site. And finally, if you have the opportunity, you can learn a great deal by attending a
VMworld conference. —D.D.
7 VIRTUAL DATA CENTER E-ZINE JUNE 2008
VMware ESX Server backup tools: moves virtual guest machines to a DR
VMware ESX server.
I Vizioncore Inc.’s vRanger Pro
I PHD Technologies Inc.’s esXpress PlateSpin Ltd.’s Forge replication appli-
I Veeam Backup ance works on each side of your produc-
tion and DR site to replicate your
Technologies like Data Domain’s DDX VMware guest machines.
deduplication appliance prevent dedu-
plication in your virtualized backups. If VMware Site Recovery Manager automates
EDITOR’S you are doing image-level backups every the recovery of a virtual data center after
LETTER night, you’ll have substantial duplication a disaster. But it’s missing the data syn-
7 in your nightly backup data. A dedupli- chronization piece. Site Recovery Man-
DECODING cation technology vastly reduces the size ager relies on your storage area network
THE VMWARE of data on backup tapes. Additionally, (SAN) hardware to sync the data with
some deduplication appliances provide some kind of replication technology.
data replication for disaster recovery
ITIL AND purposes.
VIRTUALIZATION AND STORAGE
7 When you virtualize physical servers,
DISASTER RECOVERY why not also virtualize storage? Virtual-
VIRTUAL You can now purchase a better tech- izing storage means that your physical
DELIVERY AND nology than one that just backs up and and virtual servers are not tied directly
MANAGEMENT restores from tape. Because of how virtu- to any storage system. With DataCore’s
alization works, it facilitates disaster SANmelody and SANsymphony, storage
7 recovery. If you can get an image of a can be located on any type of disk sys-
virtual guest to your DR site, you can tem and can be moved dynamically
start that virtual guest OS on any VM- without alerting servers. These solutions
ware ESX server, despite the hardware can even assist in replicating data across
differences. The following new DR tech- a WAN to another DataCore system for
nologies replicate the VMware virtual disaster recovery.
machine images to the DR site, but they Virtualizing storage is just one option
do so intelligently—that is, with knowl- for a VMware environment. Just as criti-
edge of how VMware works: cal as servers are to enterprise virtual-
ization infrastructure is your storage
Vizioncore’s vReplicator moves entire system. VMware needs either an iSCSI
images of virtual guest machines. It can or Fibre Channel (FC) SAN. A SAN is
move some or all guests to a single DR made up of the storage controller, the
host. For physical machines that aren’t switch, and an adapter in the server.
yet virtualized, if you use Vizioncore’s Most ESX Server Enterprise features
vRanger, you should look at the Vizion- require a SAN to function.
core P2V DR module. While Fibre Channel SAN solutions
are available from many companies,
Like vReplicator, Double-Take Software (Continued on page 10)
8 VIRTUAL DATA CENTER E-ZINE JUNE 2008
ITIL and the VMware Universe
WHEN I WORK with clients, this is how 5. Release management. VMware’s new
I map the VMware ecosystem with IT Staging Manager enables you to control
Infrastructure Library service and the release and staging of virtual guest
support categories. operating systems. Additionally, with
VMware 3.5, you can use the new Update
SERVICE SUPPORT Manager feature to control updates and
1. Configuration management. For configu- patches to the VMware Infrastructure
ration management, you need VMware and to guest OSes.
EDITOR’S VirtualCenter. But consider adding sev-
eral tools to VC. PlateSpin’s PowerRecon SERVICE DELIVERY
performs virtual server analysis and 1. Service-level and capacity management.
DECODING detailed reporting but also controls vir- To manage the capacity of your virtual
UNIVERSE tual sprawl and performs chargeback. infrastructure and to determine whether
7 Because PowerRecon performs charge- that infrastructure meets service-level
back, I would also place it in the IT agreements, I recommend vCharter, Nim-
financial management category. For a BUS server monitoring, PowerRecon and
UNIVERSE small and simple virtualization infra- VKernel Capacity Bottleneck Analyzer.
7 structure reporting technology, consider 2. Continuity management. Here are
Veeam Reporter. some recommendations for disaster
DESKTOP 2. Incident management. You will cer- recovery planning, backup and recovery
DELIVERY AND tainly use VMware Distributed Resource applications, and replication tools:
Scheduler (DRS) and VMware High I DR planning. VMware’s Site Recovery
7 Availability (HA) to prevent or resolve Manager, which will be available later in
incidents. One trick with incident man- 2008, falls into this category.
agement is to get your current incident I Backup/recovery. Other than VCB,
management system and VMware Infra- you need tools that provide a graphical
structure to communicate and work to- user interface and differential backups,
gether. You could, for example, config- such as Vizioncore’s vRanger, esXpress
ure VirtualCenter alarms to send Simple and Veeam Backup.
Network Management Protocol traps I Replication. vReplicator, DoubleTake
to your network management station, and Veeam Backup fall into this category.
then notify you via email or text 3. Availability management. Part of
message. ITIL’s availability management category
3. Problem management. Since problem is resilience. For VMware Infrastructure
management identifies root cause and resilience, the current best tools are
solves related incidents, I believe that VMware HA and DRS.
ITIL problem management is most 4. IT financial management. Any tool
related to a longer-term capacity planning that performs chargeback is sufficient to
technology like Vizioncore’s vCharter. connect VMware Infrastructure to finan-
4. Service and help desk. You don’t need cials, such as vCharter, PowerRecon and
specific technologies with VMware VKernel Chargeback Virtual Appliance.
9 VIRTUAL DATA CENTER E-ZINE JUNE 2008
(Continued from page 8) Remote Desktop Protocol (RDP) allows
most are bought from either EMC you to create an RDP connection to
(which owns a large share of VMware your ESX Server without leaving the
today), Dell (which resells EMC), HP, VI Client.
IBM, and NetApp (which also sells
many software solutions that are com-
patible with VMware Infrastructure). VIRTUALIZATION SECURITY
Again, these aren’t the only sources. Just this year, virtual machine security
Any SAN hardware that is listed on became an increasing concern, espe-
EDITOR’S the VMware Hardware Compatibility cially since a flaw in VMware’s virtual-
LETTER List (HCL) technical resources page ization software was revealed in Febru-
7 will work with ESX Server. ary 2008. The code exploit potentially
DECODING An alternative to an FC SAN is an allows hackers to gain access to VM-
THE VMWARE iSCSI SAN, which has become faster, ware’s file-sharing feature. To combat
more reliable and more popular. The this vulnerability, VMware recently
VMware HCL lists numerous iSCSI announced VMsafe. For more, see
ITIL AND SAN technologies. For a free, open “VMware Says It Can Eliminate
source iSCSI SAN software technology, Malware with VMsafe.”
7 consider OpenFiler, which uses a modi- And numerous third-party products
fied version of Linux and can even run have also emerged to address the grow-
VIRTUAL ing concerns about virtual machine
inside a virtual machine for testing.
DELIVERY AND security. Products such as VirtualShield
MANAGEMENT and Virtual Security Analyzer offer
VI CLIENT PLUG-INS additional options.
7 With ESX Server 3.5 and VirtualCenter At the same time, hundreds of thou-
2.5, you can add plug-ins to your VI sands of users run mission-critical appli-
Client to aid in the management of your cations in virtual environments with no
VMware ESX servers. SearchVMware. reported security problems. So experts
com contributor Andrew Kutz (whose recommend that you approach these
article appears on page 15) has written tools with healthy skepticism.
some useful plug-ins. Here are my
Secure Shell (SSH) Console Access MANAGEMENT AND CAPACITY
allows you access to your ESX 3.5 PLANNING
servers via SSH, within the VI Client, VI Client/VirtualCenter have a per-
without having to open another SSH formance-monitoring utility, but for
Client. long-term performance reporting,
capacity planning and chargeback for
Storage VMotion allows you to perform virtualization resources, consider the
Storage VMotion from a GUI client, applications shown in “Virtualization
instead of from the VMware remote Applications for Long-Term Planning”
command-line interface (RCLI). on page 12.
10 VIRTUAL DATA CENTER E-ZINE JUNE 2008
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VIRTUALIZATION ably priced virtualization reporting tool.
INFRASTRUCTURE REPORTING It analyzes your virtual servers and stor-
Certainly VirtualCenter has some age, and then it can export the data to
reporting capabilities, but in some cases Word, Excel or Visio.
it just isn’t enough. Here are two virtual-
ization reporting tools to consider:
P2V AND V2V CONVERSION
PlateSpin Ltd.’s PowerRecon offers so many Consolidating servers is what virtualiza-
reporting capabilities, it’s difficult to list tion does best. You will likely need a
EDITOR’S them all. PowerRecon reports and ana- physical-to-virtual and virtual-to-virtual
LETTER lyzes not only server consolidation consolidation tool. For P2V and V2V
7 efforts and asset management but also conversions, here are the “standards” in
DECODING power consumption. PowerRecon also terms of technologies:
THE VMWARE does chargeback, so it fits into the capac-
ity planning and financial category. PlateSpin PowerConvert is one of the most
mature P2V and V2V products, and it’s
ITIL AND Veeam Ltd.’s Veeam Reporter is a reason- helpful for more than just conversions.
VIRTUALIZATION APPS FOR LONG-TERM PLANNING
OPTIONS APPLICATION FUNCTIONALITY
vCharter Provides long-term virtual infrastructure performance reporting
Chargeback Runs as an ESX Server guest OS and tracks who uses which
Appliance virtual resources. Those reports can then be used to charge back
(VKernel) a company’s users or departments.
Capacity Bottle- Quickly identifies resource bottlenecks and tells you where to
neck Analyzer increase or re-allocate resources
Monitor Is a cost-effective technology for long-term capacity planning
(Veeam) of virtualization environments
Capacity A Web-based and agent-free performance monitoring that helps you
Planner view server capacity and plan for the long term. It is sold through
(VMware) VMware partners, and no immediate download or trial is available.
NimBUS Monitors server IT virtual infrastructure for service-level agree-
(Nimsoft) ments compliance and attempts to remedy any resource issues
before these issues cause a problem for end users
12 VIRTUAL DATA CENTER E-ZINE JUNE 2008
It can also do virtualization workload THE BIG PICTURE: A SAMPLE VMWARE
management. INFRASTRUCTURE ENVIRONMENT
Now I’d like to demonstrate what a
Vizioncore vConverter performs P2V and VMware Infrastructure environment
V2V conversions at speeds that Vizion- might look like and how that environ-
core claims are faster than those for any ment mixes VMware technologies and
other product. third-party solutions (see Figure 1,
“Suggested Technologies for Virtualized
VMware Converter is what most use for Data Centers,” below).
EDITOR’S P2V and V2V conversions. The Standard In the graphic, VMware Infrastruc-
LETTER version is free, and the Enterprise ver- ture appears in the center. This product
7 sion is available when you purchase suite offers ESX Server, VMFS, VMware
DECODING VMware Infrastructure Enterprise. HA, DRS, VCB, and VirtualCenter. In
FIGURE 1: SUGGESTED TECHNOLOGIES FOR VIRTUALIZED DATA CENTERS
VIRTUAL Veeam Backup, vReplicator,
DESKTOP Double-Take and/or
DELIVERY AND VMware Site Recovery Manager VMware Consolidated
MANAGEMENT VirtualCenter plus Backup plus vRanger
OPTIONS PowerRecon or Pro, esXpress, or
7 Veeam Reporter
VMware Infrastructure VDI Leostream,
planning and VMware broker
ESX Server XenDesktop,
Load High Suite
VMware Distributed VMware High
Resource Scheduler Availability
I VMWARE TECHNOLOGIES I THIRD-PARTY TECHNOLOGIES
13 VIRTUAL DATA CENTER E-ZINE JUNE 2008
addition, we have other VMware tech- The Top 10 Must-Have
nologies, such as VMware Virtual Desk- Virtualization Tools
top Manager, VMmark and Capacity
Planner. Then we have third-party solu-
tions that many data centers need to 1 Use VMware Infrastructure
Enterprise for each server.
complement VMware’s technologies.
Examples of these technologies are
PowerRecon, vReplicator, esXpress 2 Check the VMware HCL technical
and XenDesktop. resources page to ensure that you
Of course, your needs will vary have appropriate server hardware
LETTER based on your company’s needs. You (i.e., lots of CPU cores and RAM).
7 may need many of these tools, or you
DECODING may not even need VMware Infrastruc- 3 You need either iSCSI or Fibre
THE VMWARE ture Enterprise but a VMware starter Channel SAN hardware.
4 Even if you use iSCSI OpenFiler
ITIL AND just for testing, it is an excellent
THE VMWARE SAN option.
THE MOST IMPORTANT
7 VMWARE TOOLS
With so many pieces that make up the 5 For backup technology, you have
VMware ecosystem, some readers will several options, but I choose either
DELIVERY AND say, “I can’t afford to buy every tool, and vRanger or esXpress.
MANAGEMENT I can’t use every piece of the VMware
ecosystem. So which parts of the ecosys- 6 For long-term trending, you need
7 tem are essential?” The correct answer performance monitoring tools to
is always “It depends on your needs.” evaluate your VMware server farm.
You don’t need all these pieces to create
a successful and efficient VMware ESX
7 You need a physical-to-virtual
converter, even if it’s just the free
Still, what if you had to choose just VMware Converter.
a few tools? See my list of the 10 must-
have virtualization tools at right.
In the past, a complete enterprise 8 You need plug-ins, such as Secure
Shell, SVMotion and Remote Desk-
VMware solution comprised more than
a single VMware product. It takes server
hardware, SAN hardware and a variety
of third-party software to create the ideal 9 You need staff training sources,
VMware virtualization infrastructure such as VMware’s in-house course
solution. In this article, we covered the and video training.
gamut of the VMware universe and hope
to have saved you the trouble of investi- 0 For the future, explore virtual
gating every VMware technology in the desktop infrastructure and disaster
ecosystem. I recovery/replication solutions.
14 VIRTUAL DATA CENTER E-ZINE JUNE 2008
Virtual Desktop Delivery
and Management Options
By Schley Andrew Kutz
ODAY deployed desktop systems have
THE VMWARE sprawled to an unmanageable num-
UNIVERSE ber. For at least a decade, IT man-
7 WITH desktop virtual- agers in corporate environments
have managed an ever-increasing
THE VMWARE ization, managing number of desktops. And for about
7 desktops from afar has that long, some vendors have offered
point solutions that are mere Band-Aids
VIRTUAL become a reality. But and have addressed only part of the
problem. Now widespread server consol-
how can you intelligently idation projects—many of which are
OPTIONS sift through the myriad based on virtualization—have naturally
7 led to a desire to corral desktop sprawl
options and choose too. And as vendors have responded to
the right technology? that desire, IT managers must sift
through a fleet of desktop delivery and
You need to determine management products to decide which
have promise and which are lemons.
your shop’s priorities. IT administrators have trouble man-
aging distributed desktops for a simple
reason: There’s no one tool or suite that
allows them to administer desktops from
a distance. This is where desktop deliv-
ery comes in. And this is where desktop
delivery systems have the opportunity
to become the tool by which administra-
tors deploy desktops and manage users,
operating systems and applications.
Even if a desktop delivery system
doesn’t include all these tools, it should
integrate with systems that do to provide
15 VIRTUAL DATA CENTER E-ZINE JUNE 2008
a single point of interface. The No. 1 way delivery servers are remote servers
to reduce complexity in data centers or that stream applications to a client via
on the desktop is to reduce the number streaming technology or some other
of management interfaces with which an application distribution mechanism.
administrator must contend. Moreover, Citrix Systems Inc.’s XenApp and
that management has to be reduced Microsoft’s SoftGrid are both examples
intelligently. The interface should not of application delivery servers.
be so Spartan that nothing useful is left.
Nor should an interface look like it was Remote virtual desktops. Virtual desk-
EDITOR’S designed by committee. tops are similar to desktop blades and
LETTER I would suggest that we stop referring shared desktop systems. They give users
7 to “desktop delivery systems” as such access to a fully functional desktop envi-
DECODING and instead just call them “desktop man- ronment like a desktop blade; but the
THE VMWARE agement platforms.” Indeed, that’s what desktop resides in a virtual machine
we are really talking about. From deliv- (VM), not on remote physical hardware.
ering desktop applications to the appro- A good example of this is VMware
ITIL AND priate users to ensuring desktop security, Inc.’s Virtual Desktop Infrastructure
all the way to ensuring that Microsoft (VDI).
7 Office has the latest patches installed,
it’s all about management. Local virtual desktops. This is a fancy
VIRTUAL phrase to describe the oldest x86 virtual-
DELIVERY AND ization technology available: hosted
MANAGEMENT CATEGORIZING DESKTOP desktop virtualization. The twist is that
MANAGEMENT PLATFORMS the desktop virtualization software must
7 So let’s look at the current crop of plat- include the ability for a central authority
forms with which you can manage desk- to manage it.
tops. Luckily, some companies offer
products that are true first-generation Connection brokers and managers. Soft-
desktop management platforms. Unfor- ware packages that sit between an end
tunately, other products masquerade as user and a remote desktop management
desktop management platforms but lack system are called “connection brokers.”
crucial components. When a user connects to a Web page
in order to select a remote desktop, he
Shared desktop systems. Harking back to makes use of the connection broker or
the Unix era, a shared desktop system is manager. Two examples are Leostream’s
the oldest kind of desktop management Hosted Desktop Connection Broker
system. A modern example of such a and ClearCube Technology Inc.’s
system is Microsoft Windows Terminal Sentral.
Services, where a single system provides In addition to these software-only
concurrent system and application approaches, any discussion of desktop
access to multiple users. virtualization technologies warrants
consideration of the following two kinds
Application delivery servers. Application of devices:
16 VIRTUAL DATA CENTER E-ZINE JUNE 2008
Desktop blades. These specialized server DESKTOP MANAGEMENT
blades deliver remote desktops to users. PRODUCT ROUNDUP
Such systems are commonly available There are some well-established prod-
from major independent hardware ven- ucts and a growing number of new desk-
dors, such as Hewlett-Packard Co. and top management products. They come
IBM Corp., and from smaller companies from the categories listed previously and
that focus on desktop management sys- have a range of features, security and
tems, such as ClearCube (for more, see management options as well as maturity
sidebar “Hardware and Startup Software and a breadth of functionality.
EDITOR’S Vendors” below).
LETTER Citrix XenApp and XenDesktop. Citrix
7 Thin clients. A thin client is essentially Systems is the elder statesman of the
DECODING a computer that is stripped down to United Nations of Desktop Management
THE VMWARE nothing more than a network interface Suites. In 2005 the company began the
with a keyboard, video, mouse output game with WinFrame and is still a major
7 player with its recently renamed Xen-
and, in some cases, enough onboard
ITIL AND RAM to offer significant caching. Its App product. The following Citrix
THE VMWARE products fit into these categories:
sole purpose is to deliver a desktop from
7 a central location to a user in a remote
office. I XenApp for application servers
Startup Software Vendors
MANY SYSTEMS VENDORS— most notably IBM Corp. and Wyse Technology Inc.—offer
thin clients and desktop blades and couple some management software with them.
Smaller players and startups also offer blades or thin clients paired with connection
managers. In this category, there are some good offerings:
q Verari Systems Inc.’s WS1160 desktop blades, Connexxus thin clients, and
Connexxus broker connection manager offer a total hardware solution that’s
enticing when coupled with a management and platform software from Citrix or
q Devon IT is a relatively new company. The Devon IT TC10 desktop access device
is a slick little box with solid performance features and multimedia support. The
TC10 connects to the IBM HC10 desktop blades via the Devon Connection Manager.
Devon IT’s drawback is that its portfolio consists of a single device that relies on
another company’s desktop blades. —S.A.K
17 VIRTUAL DATA CENTER E-ZINE JUNE 2008
The killer combination
is to use XenApp in
conjunction with Xen-
Desktop and to combine
with virtualization to
reduce the number of
servers and desktops.
I XenDesktop for virtual desktops and protocols of the guest OSes, such as the
connection managers open source Virtual Network Computing
or Microsoft’s Remote Desktop Protocol
Citrix’s products have evolved to tar- (RDP). Citrix’s own Independent Com-
get mostly application servers. Even puting Architecture protocol is obviously
with its recent acquisition of XenSource, still used for XenApp.
Citrix’s homepage still lists XenApp Management-wise, XenApp is a fully
application server above Citrix’s virtual mature product that offers in-depth
desktop solution, XenDesktop. This is a application management and is the
EDITOR’S smart move, because XenApp is a fully premier technology when it comes to
LETTER managed, end-to-end application deliv- application streaming management.
7 ery system. XenDesktop offers centralized monitor-
DECODING The killer combination is to use ing and control of deployed desktop
THE VMWARE XenApp in conjunction with XenDesk- appliances.
top and to combine application stream- If you can afford a premium-priced
application streaming product, Citrix
ITIL AND could be your solution. In spite of sub-
stantial competition, Citrix has main-
7 tained a leadership position for a reason:
It is proven, reliable and well under-
VIRTUAL stood. XenApp is a strong product.
DELIVERY AND Additionally, XenDesktop is a stellar
MANAGEMENT packaged solution for virtual desktop
Microsoft SoftGrid and Windows
Terminal Server. Microsoft hasn’t strived
to make desktop delivery an area of
focus or competition. Its two main prod-
ing with virtualization to reduce the ucts and categories are the following:
number of servers in a data center as
well as desktops in offices. In providing I SoftGrid for application servers
both XenApp and XenDesktop in combi- I Windows Terminal Server for shared
nation with XenServer, Citrix has cre- desktop systems
ated a virtualization ecosystem that is
large and diverse enough to offer an Windows Terminal Server has been
alternative to Microsoft and VMware. around for a while, but the features of its
As far as security concerns, Citrix earlier incarnation didn’t stack up to
XenApp offers fine-grained control over what was then known as Citrix Presenta-
the applications and data to which a user tion Server. On deck since 2004, Win-
has access but doesn’t have full desktop dows Server 2008 Terminal Server has
management capabilities. XenDesktop more advanced new features. In 2006,
relies on the security of the remoting Microsoft’s acquisition of Softricity—
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now SoftGrid—added application deliv- The bottom line: If you can live with
ery, a must-have in anticipation of the the straight-and-narrow feature set that
Hyper-V hypervisor, which is due for Microsoft provides, you’ll get great desk-
release in August 2008. top delivery and application streaming
As far as security, Microsoft has a poor products. But if you need capabilities
track record. If its early attempts at a that you can get only in another product
firewall are any indication, there is suite, keep looking.
ample question whether Microsoft can
be trusted to secure the security holes it VMware VDI and ACE. When it comes to
EDITOR’S leaves open. On the other hand, version x86 desktop and server virtualization,
LETTER 6 of RDP supports Secure Sockets Layer VMware is the market leader, so it is no
7 (SSL), and SoftGrid allows you to define surprise that it has tried to coordinate
DECODING access restrictions, promising a new era the two in a harmonious fashion.
THE VMWARE in Microsoft security standards. VMware’s desktop management prod-
In management, Microsoft has some ucts are the following:
excellent products, particularly Active
ITIL AND Directory’s Group Policy and System I Virtual Desktop Infrastructure for
Center. I love Macs. I love Linux. But virtual desktops and connection
7 if I have to roll out a thousand desktops managers
and centrally manage them, I don’t want I Assured Computing Environment
VIRTUAL to run anything other than Windows. (ACE) for locally managed virtual
DELIVERY AND Simply put, combine Active Directory desktops
MANAGEMENT with System Center—which replaces
Windows Server Update Services in the VMware’s virtual desktop capabilities
7 new release—and Systems Management more than make up for a lack of produc-
Server, and you’ll get fine-grained con- tion-level application streaming. In addi-
trol over desktops. But there’s a hitch, tion, its Thinstall acquisition has already
of course. This package of technologies delivered a beta product. Unlike Citrix
and management tools works only with XenServer, which has the ability to host
a Windows-based desktop. virtual desktop OSes, VDI provides a
If one way to reduce complexity is to broker interface for virtual desktops,
reduce vendors, then why not choose enabling users to choose the desktop
Microsoft, which seems to deliver all that fits their needs when they need it.
you need? After all, Microsoft now has VMware ACE also offers a way to dis-
the Hyper-V virtualization technology tribute pre-packaged virtual machines
for hosting virtual desktops, the SoftGrid (VMs) to a user’s laptop or desktop
application streaming technology and when a user may not have network con-
management tools like System Center. nectivity.
But Microsoft’s suite of products does As for security, ACE allows tight con-
not fill every niche, and sometimes you trol over distributed VMs, making it a
need an alternative that can manage het- good choice for administrators who
erogeneous environments with non- want to give executives’ VMs to access
Microsoft desktops. sensitive data in remote locations. ACE
20 VIRTUAL DATA CENTER E-ZINE JUNE 2008
In an age of diversity,
VMware is a purist.
Unlike other OS vendors,
VMware focuses on one
and does so very well.
even encrypts deployed VMs with Fed- level application streaming product.
eral Information Processing Standard- In my view, however, if you can afford
compliant encryption, an important fea- VMware, use it. It has a lot of polish.
ture for organizations such as hospitals,
insurance companies and other busi- Sun Ray, Secure Global Desktop, VDI Soft-
nesses that maintain sensitive informa- ware. Sun Microsystems is the only com-
pany of which I am aware that offers a
total desktop delivery and management
package that includes thin clients, con-
EDITOR’S nection managers and virtual desktops.
LETTER Here are Sun’s key products:
DECODING I Sun Secure Global Desktop Software
THE VMWARE for connection managers
I Sun Ray 2, Sun Ray 2FS, Sun Ray
270, Sun Ray Software for thin
ITIL AND clients
THE VMWARE I Virtual desktops: Sun VDI Software
7 tion. VDI’s security relies largely on the
protocols used to access the VMs it hosts Sun’s Sun Ray thin clients have a sleek
VIRTUAL as well as the security of the desktop appearance and fast connectivity. The
DELIVERY AND OSes it hosts, although VMware made a Sun Ray 2 and Sun Ray 2FS are great
MANAGEMENT step in the right direction with inclusion book-end products for companies with
of RSA Security Inc.’s SecurID support an existing investment in monitors.
7 in the latest release of Virtual Desktop Sun Ray 2FS includes support for smart
Manager (VDM). cards and fiber-optic network cabling to
ACE’s management features allow enhance security by reducing magnetic
administrators to fine-tune VMs prior transmissions. Sun Ray 270 fits busi-
to distribution. VDI admins can choose nesses just beginning a foray into desk-
the VMs to which a user will have access top deployment, offering an all-in-one
based on group affiliation. VMware technology similar to Apple’s iMac.
recently released VDM 2, which Sun’s Secure Global Desktop Software
includes enhanced management capabil- is the second tier in Sun’s three-tier
ities and integration with Microsoft desktop management solution, sitting
Active Directory. between clients and servers in data cen-
In an age of diversity, VMware is ters. Sun’s VDI software enables admin-
a purist. Unlike OS vendors such as istrators to deploy a connection manager
Microsoft or Sun Microsystems Inc., that not only supports Sun’s own xVM
VMware focuses on one thing—virtual- virtualization technology but also acts
ization—and does so very well, includ- as a broker for VMware VDI as well.
ing the distribution and management For security, Sun supports RSA
of virtualized desktops. But right now, SecurID and integrates with Microsoft
VMware does not yet offer a production- Active Directory and other Lightweight
21 VIRTUAL DATA CENTER E-ZINE JUNE 2008
Access Directory Protocol (LDAP) to the Digital Fiber C/Port that is
servers for authentication. Sun says designed to reduce magnetic transmis-
that its support of fiber-optic network sions in data centers. ClearCube desktop
cabling improves security, but does it blades are called PC blades and, like their
matter? Most shops have made a heavy matching user ports, also range in func-
investment in Ethernet networking tech- tionality, from the R1300 to the A1410.
nology. For them, running fiber to desk- The combination of desktop hardware
tops would be expensive. And to realize and Sentral presents a complete product
fiber’s security benefit requires replacing suite, and ClearCube’s biggest challenge
EDITOR’S existing Ethernet, at least in publicly is Sun, which offers equivalent hardware
LETTER accessible areas. Besides, at this point and software and a virtualization solu-
7 I’d be more concerned about the security tion as well.
DECODING of wireless LANs.
THE VMWARE Sun Secure Global Desktop Software HP Systems Insight Manager and Open-
centralizes desktop management by View. HP’s desktop blades, combined
moving OSes off the desktop and into with its management software suites—
ITIL AND data centers. With Sun Ray Software, Systems Insight Manager and Open-
it’s possible to deploy and manage thou- View—are a good option for minimizing
7 sands of Sun Ray clients with only a desktop sprawl. Systems Insight Man-
few administrators. It’s slick. ager and OpenView are multifeatured
VIRTUAL If I had to build a desktop manage- suites and don’t fit my basic categories.
DELIVERY AND ment solution from the ground up, On the hardware side, HP desktop
MANAGEMENT you might find me giving Sun a call. blades are standard blades but include
HP’s Remote Graphics Software to
7 ClearCube Sentral VDI Management enhance the graphical experience of
System. ClearCube focuses on virtual remote clients. HP entered the thin-
desktops and offers desktop manage- client business by acquiring Neoware
ment software in this category: Inc., which was a good move. The HP
Neoware thin clients are one of the
I Sentral VDI Management System few thin clients to include wireless
for connection managers capabilities.
Coupled with HP’s legendary hard-
ClearCube’s Sentral VDI Management ware management software, HP has a
system does it all. Sentral manages strong offering for a company investing
blades and user ports—or thin clients— in thin clients in conjunction with desk-
as well as integrates with existing VDI top blades.
solutions from VMware and others.
ClearCube’s thin clients and desktop Pano Desktop Service and Management
(PC) blades are innovative. Referred to Server. Hands down, Pano Logic Inc.
as “user ports,” these devices are treated makes the sexiest desktop device on the
as ports to desktops in data centers. planet. The Pano device is elegant, and
These user ports range from the simple its supporting management products do
I/Port, which provides basic connectivity their jobs well. Its technologies are the
22 VIRTUAL DATA CENTER E-ZINE JUNE 2008
following: products has branched out. Leostream
now offers a connection broker for proxy
I Pano Desktop Service access to data center desktop solutions.
for virtual desktops Its connection broker is the following:
I Pano Management Server
for connection managers I Leostream Hosted Desktop
Connection (HDC) Broker
Pano Logic’s architecture includes
Pano Desktop Service, Pano Device and Leostream’s HDC Broker provides
EDITOR’S Pano Management Server. The desktop managed access to hosted desktops.
LETTER service and management server and typ- It allows access via the Web, clients fat
7 ical middleware connection manager and thin, and even allows users to be
DECODING applications cover the functionality assigned to virtual or physical desktops.
THE VMWARE bases. The true draw is the Pano Device, HDC has some nice enterprise features,
a thin client that consumes only 5 watts including global DNS integration and
of power and enables a user with a desk- clustering, making it one of the most
ITIL AND top problem simply to hit the single but- solid connection brokers.
ton vice and roll back the desktop to an HDC security comes in hardware-
7 earlier version. based SSL virtual private network
For security, Pano transmits data using (VPN) support by integrating with
VIRTUAL the 128-bit Advanced Encryption Stan- Cisco, F5 and Juniper SSL VPNs. HDC
DELIVERY AND dard, and local storage can be disabled also enables external authentication
MANAGEMENT to prevent users from copying data to via Microsoft Active Directory, Novell
USB keys. Inc’s eDirectory and other OpenLDAP
7 The Pano Management Server enables servers.
administration of security and access HDC allows for central management
control, including use of USB ports. of clients via dynamic and policy-based
With it, IT managers can configure configurations but does not allow for
virtual machines for user groups or indi- management of guest OSes.
viduals; roll out updates, upgrades and HDC is a great connection broker for
patches seamlessly; and perform back- businesses that don’t already have some
ups of all PCs on their own schedule. type of partnership with an OS vendor
The Pano Device is innovative, or virtualization solution. Then again,
reliable and ranks high on my chart. most major original software vendors
If you are going to use thin clients, and virtualization providers offer con-
Pano Logic’s device is just genius. If you nection managers for their products,
want a more trusted and proven name, which marginalizes companies like
check out Wyse Technology Inc.’s thin Leostream. If you build infrastructure
clients. piece by piece with best-of-breed prod-
ucts, then HDC is a good choice. But
Leostream Hosted Desktop Connection most administrators will trade the extra
Broker. The company best known for its 5% in performance and features for a
physical-to-virtual (P2V) migration completely integrated solution.
23 VIRTUAL DATA CENTER E-ZINE JUNE 2008
Provision Networks Virtual Access Suite agement tools include the following:
for Desktops. Provision Networks Inc.
also provides a connection manager I Virtual Desktop Server (VDS)
for VMware’s VDI. Provision Networks for virtual desktops
offers the following feature-rich desktop I Virtual Desktop Controller (VDC)
management technology: for connection managers
I VAS, Desktop Services Edition The most interesting thing about
(DSE) for connection managers Solid ICE is neither VDS nor VDC.
EDITOR’S Qumranet’s claim to fame is its Simple
LETTER VAS DSE is one of the best connection Protocol for Independent Computing
7 managers on the market. In addition to Environments, or SPICE, which allows
DECODING providing access to VMware’s VMs, it virtual desktops to stream rich, multi-
THE VMWARE supports physical machine access. A fea- media content over a LAN link to
ture of DSE is that it automatically dis- remote clients.
7 covers desktops and VMs to manage by Solid ICE is an interesting product,
ITIL AND enumerating the objects in Microsoft’s but it’s also quite new and I haven’t
Active Directory and VMware’s Virtual- reviewed it yet. Virtualization evangelist
7 Center. Alessandro Perilli has said that, with
In security, DSE supports RDP over KVM, Qumranet could pose strong cost
VIRTUAL SSL as well as pass-through Kerberos competition to VMware’s and Micro-
DELIVERY AND authentication and smart-card logons. soft’s virtual desktop technologies.
MANAGEMENT Another cool management feature is
the ability to create VM pools so that AppStream. AppStream is one of the few
7 virtual desktops are pre-created and remaining application-streaming tech-
ready to use. nologies that hasn’t been purchased by
The VAS Desktop Suite Edition is a a major virtualization or OS vendor and
single-purpose connection manager. offers the following technology:
And much like Leostream’s Hosted Desk-
top Connection Broker, it does its job I AppStream application delivery
well. But much more feature-rich, all- server
in-one solutions are available in lieu
of a single-purpose app. The latest version of AppStream is
pretty nice. It includes support for Vista,
Qumranet Virtual Desktop Server and LDAP integration, a Firefox plug-in, and
Virtual Desktop Controller. Qumranet is even the ability to email users when a
an Israel-based company charged with license limit has been reached.
managing the development of the Linux Like standalone connection manager
kernel-based virtual machine, and it has programs, AppStream is a standalone
developed a full virtual desktop manage- application delivery server and, as such,
ment suite. Qumranet’s core product, encounters stiff competition from major
Solid ICE, is a fully integrated desktop OS and virtualization vendors that offer
virtualization product. Its desktop man- application servers. Although Appstream
24 VIRTUAL DATA CENTER E-ZINE JUNE 2008
has nice features, the product isn’t genius. If you want a more trusted and
compelling enough to stand out from proven name, consider Wyse Technol-
the competition. ogy’s thin clients.
Virtual desktop managers. Until VMware
THE RIGHT DESKTOP gets its application streaming technology
DELIVERY SOLUTION? up and running, Citrix offers the most
When VMware announced VDI, there comprehensive technology available.
was confusion was about why virtual
EDITOR’S desktops are so special. The question Total solution. Sun is the only company
LETTER that I heard most was “How is this dif- that provides the total package, from
7 ferent from terminal services or thin hardware to software. If you’re partial
DECODING clients?” The answer is that VDI was just to dealing with just one vendor, Sun
THE VMWARE one more way to accomplish the task of sells thin clients, connection managers
delivering desktops to users in a man- and a virtual desktop platform.
aged fashion. All product reviews, of
ITIL AND course, have their pros and cons, so ulti- This article provides only a brief
mately you have to choose technologies overview of the remote desktop land-
7 based on what’s right for your situation. scape. Summarizing the entire scope of
Barb Goldworm of Focus Consulting the field in a single article would be to
VIRTUAL echoes this notion: assert that such a task is possible when
DELIVERY AND “The key to success will be to under- there is clearly too much content to do
MANAGEMENT stand all of the user requirements and all of it justice. For a complete guide to
use cases, determine which technology desktop management systems and appli-
7 best fits each need, and then evaluate cation streaming packages, check out
the available solutions in that area to see the Focus Research Series “Desktop
which product best fits your particular and Application Delivery Alternatives.”
environment and needs.” But if you’re ready to get started, the
Still, with the caveat that your particu- most important step is to identify your
lar situation may dictate a certain set of priorities. Do you want a best-of-breed
technologies, here are my recommenda- solution? Do you want to minimize com-
tions for each of the major technology plexity by interacting with the least
options: number of vendors as possible? Is cost
your central concern? Are you willing to
Desktop blades. HP and ClearCube offer take a chance on a new and unproven
an equally diverse number of desktop technology for the sake of performance?
blades, but I select HP as the top pick You have to ask these questions to know
because it can integrate its blades with where to begin. Once you know the road
an already vast product base, such as HP you plan to take, this article can act as a
Systems Insight Manager. series of street signs to guide you on
your path. If you get lost on the way, you
Thin clients. If you are going to use thin can always contact me at akutz@lostcre-
clients, Pano Logic’s device is sheer ations.com. And enjoy the trip. I
25 VIRTUAL DATA CENTER E-ZINE JUNE 2008
ABOUT THE AUTHORS
David Davis—a Schley Andrew
Certified Informa- Kutz has more than
tion Systems Secu- 10 years of profes-
rity Professional, sional experience
a VMware Certified in computer systems
LETTER Professional and Microsoft design, security, programming,
Certified Systems Engineer—has implementation and manage-
THE VMWARE worked in the IT industry for 15 ment. Kutz is a site expert for
7 years. Currently, he manages a SearchServerVirtualization.com
group of systems and network and the author of Sudo for Win-
administrators for a privately dows. He is a Microsoft Certified
7 owned retail company. He has Solutions Developer, a SANS/
VIRTUAL written hundreds of articles GIAC Gold Certified Windows
DELIVERY AND and six video training courses, Security Administrator and a
OPTIONS including the Train Signal VMware Certified Professional
VMware ESX Server video in VMware Infrastructure 3.
training series. His websites
are Happy Router.com and
26 VIRTUAL DATA CENTER E-ZINE JUNE 2008
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