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Forrester Research

The View from Forrester Research

Remote access and virtualization: Not one and the same

By | December 2, 2009, 12:31pm PST

Summary: Some of you may have seen me tweeting recently about a little experiment that I have going on where I’m using a small PC (perhaps we can call it a netbook, but that’s a semantics issue) — the Nokia Booklet 3G — as my primary computing device outside of the office. I am using the [...]

Some of you may have seen me tweeting recently about a little experiment that I have going on where I’m using a small PC (perhaps we can call it a netbook, but that’s a semantics issue) — the Nokia Booklet 3G — as my primary computing device outside of the office. I am using the device with remote access from LogMeIn to replicate the screen of my work laptop which sits running, locked to my desk at Forrester. My research in the area of remote access spawned the idea, my Everest-ascent-team-like desire to lower the total weight of my travel gear (and the Nokia, at just 44 ounces, works nicely to that end) pushed it forward.

Personally, I’m looking to explore what limitations the arrangement brings forth in my day-to-day usage. To date, a couple of issues have arisen - the slow refresh which made editing an MS PowerPoint document particularly painful being one — but it’s fair to say that I have a relatively complete facsimile of my work computing environment from this, or any, device with a browser. But is what I am doing “virtualization”? Perhaps, in a broad definition, but it’s not basic remote access.

It’s been a long standing question among our clients and among vendors looking to serve the needs of remote workers, ‘what is the best way to give secure access to the largest number of IT’s consitutents?’ and the answer takes many forms, one of which is virtualization, but it’s not the only answer. 

What I’m currently experimenting with is an experience that can be duplicated by other third party tools or a mix of VPN and Microsoft native technology such as RDS, as well as by streaming application and desktop services. All of these options rely, however, on some other software or hardware implementation — my experiment included — either the presence of third party software, a distant, constantly running PC (not very green, I know) or the presence of resources dedicated to back-end systems in the streaming examples. To me, all of these are examples of one, potential definition of virtualization

“The replication in full or in part of a computing environment on a separate device.” 

While these implementations serve my needs to get me access to my desktop, they are far more complex and require many more moving parts than a basic remote access implementation. To me, remote access itself is fundamentally a service, and it can be defined (and differentiated) as follows:

“The ability to connect to information and services remotely.”

Make sense? Think Outlook web access via VPN. Remote access serves a much simpler role than virtualization, and is much faster to implement, not to mention cheaper for IT. Perhaps most importantly, when in a hurry (almost always the case when provisioning access in preparation for a pandemic event such as H1N1 outbreaks) remote access services are likely to be the cheaper, faster alternative to virtualization. 

It is possible, no, likely, that the two technologies will converge and remote access will be served by virtualization implementations in the future; yes, you’ve heard this from me before*. However, IT should be careful to look at the two technologies as separate projects and not paint with the broad brush seen in this exchange

I’d like to hear from you, IT readers, what’s your company’s approach to providing access to critical services: are you relying on SSL VPN, moving to virtualization, or still trying to figure it out? Comment here or respond via @802dotchris on Twitter.

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RE: Remote access and virtualization: Not one and the same
rernst99@... 4th Dec 2009
Welcome to cloud computing. The very premise of what you are trying to do is wrong. You want access to your work from anywhere. You do not want to access *your isolated computer* from anywhere.

You should look into cloud computing solutions. Try Google Docs to get an idea. Your approach is what they did several decades ago with PCAnwyhere. I would think that you job in the IT business would have you join the present.
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other alternatives
ThinkFairer 2nd Dec 2009

Yes, it's agreed other options does exist other than virtualization. VPN could be faster or how about web based solution. It's very likely that all these technologies will converge

Virtualization still hold many advantages such as familiarity, ease of set up, cost etc It need NOT be complex and expensive if suitable solution is used :-

http://www.aikotech.com/thinserver.htm
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RE: other alternatives
csilvaFORR 3rd Dec 2009
For sure there are other ways to accomplish what
I've set out as an example in my post, however,
my intended point is that there are different
tools for different ends and, many times, the
terms are used interchangeably, which can be
misleading and lead to bad business decisions.

I have to respectively but wholeheartedly
disagree with your statement above regarding
cost benefits of virtualization over remote
access. When comparing using the web from a PC
(managed or unmanaged) to access critical
services such as email (as with SSL VPN) versus
a virtualization implementation reliant upon any
backend server hardware, the back end systems
cost - even in a single component category such
as storage - are much higher.

I do agree that both virtualization and remote
access will continue to coexist. In fact, in
many client organizations I speak with, there
are various categories of users, some of whom
require more complex access to perform IT
support or development tasks (as two examples)
and therefore require Citrix or RDP sessions
while the majority of users will simply make use
of a web-based email front-end that resides
(hopefully, but not always) behind a VPN.
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Better software
cabdriverjim 2nd Dec 2009
I see your problem. And I see why its frustrating to you. Here is the problem in a nutshell... Microsoft Windows was designed for a Intel 286. No network. Remote access to use a PC was the fevered dream of a far far away world (or a couple blocks down the street at the UNIX shop). So, to deal with the lack of CPU cycles they had programs drawing bitmaps. Saves tons of CPU cycles because it just merges sets of lookup tables. Lookup tables are fast. So, this makes sense.

Fast forward 25 years... Windows still uses the same basic bitmap-based rendering subsystem. Therefore all "Windows apps" output bitmaps. Bitmaps take eons to transmit over the wire. Today we have tons of CPU cycles, so many we waste 99.9% of them as heat to redraw an unchanged bitmap on the screen 120 times a second, but we don't have enough bandwidth to push this bitmap over the network at full speed.

Solution? Stop shoving pre-rendered bitmap data down the wire. Remember, I said the UNIX shops did this all day long 25 years ago, didn't I? How? Simple. Let the display device do the rendering and only transmit new information over the wire. Far away machine calculates a table of figures and then the local machine renders the raw data into something useful for you to look at. X Window system (developed 25 years ago) works basically this way. The Web (developed on the predecessor to MacOS X 18 years ago) works this way; especially with the advent of modern browsers.

Let machines designed for processing do the processing. Let machines designed for display to the displaying. Once you take that leap of faith you find that an entire universe of possibilities opens up before you. Windows jammed the two concepts into a single device on a single CPU simply because that's all IBM gave them to work with in the beginning. And Windows users are all suffering for it to this day. Every attempt Microsoft makes to move away from Windows functioning in this way is ignored because the bitmap culture is deeply ingrained in their legacy.
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RE: Better software
csilvaFORR 3rd Dec 2009
A detailed treatise on the limitations of
current systems, to be sure, and I agree. That
said, however, it's not often that we, the IT
analyst community enter into a client situation
where a redisgn of the entire computing
environment is a feasible undertaking. This is
why, in my option, organizations do try and push
the envelope to provide more flexible access to
systems for employees outside the office and in
disaster situations.

I think, in part due to some of the very issues
that you raise, simple remote access solutions
make a lot more sense for simple remote access
problems than virtualization - in its current iteration. Will the technology improve and allow
for a much more flexible remote computing
experience? Absolutely, but for the time being,
I've yet to find too many cases where entering
into the licensing, back end systems and infrastructure upgrades to support
virtualization on the client make sense to solve
remote access problems.
Welcome to cloud computing. The very premise of what you are trying to do is wrong. You want access to your work from anywhere. You do not want to access *your isolated computer* from anywhere.

You should look into cloud computing solutions. Try Google Docs to get an idea. Your approach is what they did several decades ago with PCAnwyhere. I would think that you job in the IT business would have you join the present.

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