Information Technology Management with a Purpose

September 12, 2011  5:51 AM

IT Service Management simplified

S R Balasubramanian Profile: S R Balasubramanian

CIOs design and manage complex information systems to help the company get better in terms of their efficiency and effectiveness. With time, as systems expand due to organizational growth and changed environment, they get unwieldy and it becomes difficult to keep a good grip over the systems. A need was therefore felt to have a process which could ensure delivery of good IT services to the organization at all times. We have seen challenges faced by CIOs in keeping up with the organization’s demands, and at the same time, dealing with technology-changes.

‘IT Services Management (ITSM)’ then came up as a formal methodology for managing the IT environment and services delivery. No one author, organization, or vendor owns the term ‘IT Service Management’; the origins of the phrase are unclear. There are a variety of frameworks and authors contributing to the overall ITSM discipline; and proprietary approaches are available too.

Understanding ITSM

Let us first understand what ITSM is. IT Service Management (ITSM) is a process-based practice intended to align the delivery of information technology (IT) services with needs of the enterprise, emphasizing benefits to customers. ITSM involves a paradigm shift from managing IT as stacks of individual components to focusing on the delivery of end-to-end services using best practice process models. It has, to some extent, common interests with process improvement movement, for example TQM, Six Sigma, Business Process Management, and CMMI, frameworks and methodologies. ITSM may consist of a set of best practices, a natural progressive life cycle approach, focused on value generation and business outcomes, non-prescriptive and therefore easy to tailor and adopt.

Main components of ITSM

It would make sense to understand various steps of the process that one has to undergo for implementing ITSM. Let me describe them in brief here. They are drawn from methodology followed by the Quint Group.

Service Strategy – Vision: This is about understanding the business and aligning IT with business objectives. Therefore every stage of service lifecycle is driven by a business case.

Service Design – Blueprint: This consists of a document made after a detailed analysis which guides the design of architectures, running of IT services, putting in appropriate and innovative IT infrastructure solutions and services. This provides the right direction for delivery of various services to business.

Service Transition – Construct: This part focuses on the broad long term change management role and release practices so that risks, benefits, delivery mechanisms, and ease of ongoing operations of service are delivered. Therefore the matters like knowledge management, awareness, training, release and development management, service testing and validation, are considered adequately.

Service Operation – Provision: This stage focuses on delivery and control process activities like event/ incident management, request fulfilment, problem management, etc. By doing so, we achieve a highly desirable steady state of managing services on a day to day basis.

Continual Service Improvement – Enhance: Continuous improvement is integral to this process and therefore there should be an effort to identify process elements to bring about service management improvements.

If we are currently managing our processes well, we tend to get complacent and do not formalize the service delivery mechanism. We should institutionalize the processes by inviting wider participation including those from business so that IT stays focused on delivering business benefits. It may sometimes not be possible for us to develop the best practices and therefore some external help could be of value.

September 4, 2011  9:59 AM

How SMBs can use IT advisors to their advantage

S R Balasubramanian Profile: S R Balasubramanian

Large enterprises, as we know, operate on huge budgets and can easily afford good and senior persons as their CIOs. These companies run several projects and therefore have a staff contingent who manage the work. They can also engage consultants, service providers, and the likes, to assist them in their efforts.

Small companies, on the other hand, work under several constraints. It is not easy for them to hire good and senior persons to head their IT departments — for one, they can’t pay salaries that the senior persons demand, and secondly, the good and deserving candidates always prefer large and known organizations to small companies to further their careers. These small companies, though may have great ambitions, operate with limited budgets and have to be extremely careful with their spends.

As a result, these companies run small projects which take care of bare necessities, what we call as vanilla implementations, and these do not deliver any significant benefits. With the available resources, they do not have the stomach to try big initiatives. But some of the entrepreneurs, many of whom are the new generation businessmen, are ambitious and want to grow at a fast pace and think big. For them, IT becomes a drag, one which does not facilitate their growth efforts and becomes a constraint.

The way out

The only solution they can think of in such cases is to hire consultants. Consultants from known organizations, may often be expensive and work for short periods for the duration of the assignment, leaving the rest for the organization to manage. CEOs sometimes trust the hardware/ software vendor to provide a solution as some vendors increasingly claim to have a bouquet of tools and services to take care of all the requirements. This, to my mind, is risky and avoidable.

Appointing an advisor

The best case, in my opinion, is for them get hold of an advisor who could devote some time regularly to draw the right IT road map, help them in selection of technology and of implementation partners. By advisors, I mean senior professionals who are retired or those who have chosen to do some work on their own. Advisors can help guide projects to their logical conclusion and supervise the internal teams to ensure that they carry out work as per the defined schedule.

I have been advising two such companies and I find the arrangement to be of great advantage to them. They are assured that their IT program would be taken care of and they just have to concentrate on their business. I also find it very satisfying as I am able to bring in the best practices and the knowledge and processes of large enterprises to these smaller companies.

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August 29, 2011  6:45 AM

6 capabilities that can enhance your CIO-career

S R Balasubramanian Profile: S R Balasubramanian

The CIO plays a significant role in his organization and helps in providing various technology solutions. He is often a part of transformational projects that provide a competitive edge to the organization.

The CIO in most cases is one who initially starts as a programmer or a systems analyst or a business analyst and slowly rises up in the organizational hierarchy or picks up another opportunity and then builds his career till he reaches the level of a CIO. There are of course cases of lateral entry and people from other disciplines moving in to take the position of a CIO. The CIO learns as he builds his career and gets better in terms of effectiveness. He becomes well-adept in understanding functional processes, systems analysis, project management, people management, organizational behavior, etc. He implements wonderful systems and makes an impact. In spite of his efforts he is sometimes not viewed very kindly by the management.

In spite of his efforts, at times, his work does not get the due credit from the management. Reasons could be many, however, in my opinion, he can try to enhance a few skills to create that impact. People may suggest that they attend workshops to develop their leadership qualities, management skills, etc; but here, I wish to deal with another factor which can be useful in making the CIO more effective.

A case for the CIO to pick up a different role
In his normal progression, as described above, the CIO develops into a functional head and like other functional managers acquires skill in his domain but has a narrow outlook. My suggestion is that he should, as a part of his career building exercise, consider parking himself with a consulting or an IT services organization for some time. This gives him an opportunity to look at organizations from the other side as he goes to user organizations and develops solutions for them. In the process he learns new skills which otherwise he would find difficult to acquire. Let me explain about the exposure that he gets and skills he learns.

1. Communication skills: As a consultant he is expected to convince the potential customer of his offering and this he does either through meetings (speaking and convincing skills) or by making presentations. He also gets better in the areas of persuasion and negotiation.

2. Writing skills: The engagement begins with his submitting a proposal to the client and then he has to follow it up with clarifications and justifications. His writing skills therefore get honed. When he becomes a CIO, he can use these skills for putting up proposals and justifications to the management and get them approved faster.

3. Management perspective: Consultants usually talk to the CEO or senior functionaries and take a note of their expectation and engage with them at defined stages of the project. By doing so they start looking at issues from the management’s perspective and this can be of immense help when they later assume the role of a CIO.

4. Project management skills: All consultants and service providers work on fixed timelines and costs. They learn how to draw time schedules & resource plan and have to monitor the progress on a regular basis. As we know any overrun on time or costs is viewed seriously. Project management skill therefore becomes a very useful ingredient of one’s role as a CIO.

5. Documentation: We all know that documentation of specifications, systems documentation, users manuals, policies etc. in user organizations are usually neglected or are poor. However for consultants / service providers this process is fully ingrained in their working. This can be a great advantage for such a CIO.

6. Understanding the customer: Whether at the time of selling their services, project stages or at completion, the consultant has always to be customer centric. For him his existence depends on keeping the customer happy. Now if he carries this perspective with him when he becomes a CIO, he will treat his internal customers with due care and will learn to build the right relationships.

Is it doable?
Well, I am sure, it is. After spending my initial five years with user organizations, I spent the next 10 years with a management consulting organization. What I learnt during this period was of immense value and at times I found myself doing things a little differently as a CIO than my peers in the industry. I was fortunate to have taken that step and I strongly advocate this strategy for career growth.

August 22, 2011  2:28 AM

Why corporate social responsibility (CSR) is important for CIOs

S R Balasubramanian Profile: S R Balasubramanian

Over the years, many organizations have committed themselves to corporate social responsibility (CSR) as one of their important tasks. Many adopt this as part of their organizational values while some others do it as part of their corporate branding exercise. This task is usually undertaken and managed by the corporate affairs, HR, or the directors’ cell. The CIO is nowhere in the loop. But since this is an important organizational program, should not the CIO contribute his bit and stay on top of various organizational initiatives?

I am aware that all may not agree with my assertion but let us debate this point a little more. In my opinion, the CIO can take a step forward and provide his support to such an initiative and send a clear message that he is ready to go beyond his boundaries to contribute to important programs of the organization. Let me delve at a few examples wherein the CIO can add value; the possibilities can be a lot more depending on the organizations they work for and the programs they undertake.

Contribute to ongoing programs

Companies adopt villages, work with NGOs, or run their own programs as a part of their CSR drives. The CIO can offer help in various forms. For instance, he can offer to set up communication channels, to develop systems to capture data and monitor progress, to help generate information and statistics, etc. To speak from my experience, my last organization had tied up with an NGO to empower rural women by helping them start some vocation, for example, tailoring, handicraft, etc. We spoke to the corporate affairs department and developed systems which helped them monitor progress of each of the schemes including money spent, number of participants, output generated, money earned by individuals, etc. In another case, we helped develop a mobility solution for data to be captured directly from the field.

Making IT assets available for the needy

In all our companies, whenever the IT assets like the PCs, laptops, and printers get to the end of their life cycles, and as per policy, we replace them. The old equipment is either sold or given as a buy back. It is here that the CIO can suggest and seek approval from the management to give away the old assets to rural schools, villages adopted by the company, or to other needy groups through NGOs, etc. Since the resale value of these equipment is small it makes sense to put those assets to better use this way. In the last three organizations I worked with, I was able to seek management’s nod and we gave away PCs and printers to some rural schools and to others through an NGO.

Saving on energy consumption

Many companies have taken it upon themselves to reduce energy consumption, to seek to lower carbon footprint, or to lower pollution levels. These are important organizational programs and therefore it makes sense to make our own contribution. We, as CIOs, can help by adopting green technologies and by optimizing usage of IT assets to help our organizations to meet this objective. For example, in one of the organizations that I worked with, it was decided to reduce energy consumption levels as a part of its social commitment drive. The major contribution, of course, came from the factory employees who did this by improving shop floor efficiency levels, getting newer energy efficient machines, improving production processes, etc.

The administration department started the move to switch off lights and fans when not in use, and also replaced old incandescent bulbs with compact fluorescent lamps (CFLs). Not to lag far behind, we, in IT, undertook a concerted program to reduce energy consumptions in the data center. We introduced virtualization and reduced physical servers by over 55%, we replaced the old split ACs with targeted cooling systems and implemented power saving features on all desktops and laptops. We were able to demonstrate drop in the energy consumption by over 40% and the energy audit report was submitted to the management for information.

These are just a few examples of how the CIO can stay a step ahead of the others and pick up initiatives to add value to organizational programs. This also helps him develop his personality and confidence and puts good use of his talents for a social cause.

August 15, 2011  3:24 AM

Enterprise architecture demystified

S R Balasubramanian Profile: S R Balasubramanian

In the normal course we keep on adding servers, storage and other equipment in our data center to cater to the increasing demand for IT services in our organization. During this expansion we sometimes fail to notice whether our facility is still relevant to business. It is best to halt and do a reassessment of our IT set up. It was to address this need that about two decades ago, a new field was born that soon came to be known as ‘enterprise architecture’. This field initially began to address the following two problems:

System complexity: Organizations were spending more and more money building IT systems; and

Poor business alignment: Organizations were finding it more and more difficult to keep those increasingly expensive IT systems aligned with business need.

Issues that we are faced with

Management and users often express their dissatisfaction with the IT systems and we feel the need of addressing their concern. The common refrain that we hear is as follows:

i) IT systems have become unmanageably complex and increasingly costly to maintain.

ii) IT systems are hindering the organization’s ability to respond to current, and future, market conditions in a timely and cost-effective manner.

iii) Mission-critical information (provided by IT) is consistently out-of-date and/ or just plain wrong.

iv) A culture of distrust is developing between the business and technology sides of the organization.

Frameworks or methodologies

Though many methodologies evolved over a period of time, the following four were the most prominent, viz. The Zachman Framework for Enterprise Architectures, The Open Group Architectural Framework (TOGAF), The Federal Enterprise Architecture, and The Gartner Methodology.

We may call them frameworks, processes, or practices, but they did define a formal approach to the subject.

Adoption of enterprise architecture

Organizations can follow any of the approaches or a blend of these methodologies but it is important that they formalize this approach and follow this with all seriousness. But even a blended methodology will only be as good as an organization’s commitment to making changes. This commitment must be driven by the highest level of the organization. It is usually not possible to drive this initiative on our own and we may require the services of a consultant or an expert who brings in best practices based on his experiences with other organizations.

Now let me briefly discuss two of the methodologies as example to show the different approaches they follow:


TOGAF divides enterprise architecture into four categories:

Business architecture: Describes the processes the business uses to meet its goals.

Application architecture: Describes how specific applications are designed and how they interact with each other.

Data architecture: Describes how the enterprise data stores are organized and accessed.

Technical architecture: Describes the hardware and software infrastructure that supports applications and their interactions.

The Gartner Methodology

Gartner believes that enterprise architecture is about bringing together three constituents: business owners, information specialists, and technology implementers. If you can bring these three groups together and unify them behind a common vision that drives business value, you succeed; if not, you fail. Success is measured in pragmatic terms, such as driving profitability, not by checking off items on a process matrix.

Most organizations are facing major changes in their business processes. The process of creating an enterprise-architecture vision is the organization’s opportunity to sit down, take a collective breath, and ensure that everybody understands the nature, the scope, and the impact of those changes.

Enterprise architecture, in the Gartner view, is about strategy, not about engineering. It is focused on the destination. The two things that are most important are where an organization is going and how it will get there. Any architectural activity that is extraneous to these questions is irrelevant


Whichever method we choose, we should remember that enterprise architecture is a path, not a destination. Enterprise architecture has no value unless it delivers real business value as quickly as possible. One of the most important goals of any enterprise architecture is to bring the business side and the technology sides together, so that both are working effectively toward the same goals. No enterprise-architecture methodology can bridge this divide unless there is a genuine commitment to change. That commitment must come from the highest level of the organization and an enterprise-architecture methodology can be a valuable tool for guiding that change. This change can manifest itself in many ways.

It is obvious that an organization that does well in these key areas will be more successful than one that doesn’t.

August 8, 2011  2:51 AM

6 benefits of hiring IT research firms

S R Balasubramanian Profile: S R Balasubramanian

Technology is complex and it is quite a task to manage it effectively. With the technology advances happening at regular intervals, and the changes taking place in the environment in which the business operates, the work of the CIO has become more challenging than ever before. Whereas on one hand the competition gets tougher with business expecting more out of IT, on the other hand, technology changes make many of the current components redundant or need upgrades. Not responding to a change exposes the organization to the danger of a business competitor taking a step ahead with new technologies.

Now how would the CIO deal with these challenges? He can either learn and equip himself with new knowledge and put them to work or he can seek an external help. Consultants are often hired for specific requirements and they leave after completing them, but the CIO often needs an agency that can feed him with the latest information and expert advice on various matters pertaining to technology and its application. It was perhaps to fill this gap that IT research bodies came to the scene to serve organizations with their research findings and expert opinion on members’ queries. The more popular research agencies include Gartner Group, Forrester, Aberdeen Group, etc. Many organizations worldwide have been using them and extracting value.

Why should the CIO engage with them

The requirement of using their services arises only if the organization that we work for, is serious about technology application and has big plans to leverage on IT. If we have large projects on the anvil and we have challenges of making choices between various technologies and vendors, it may be good to have the support of IT research organizations who could give us valuable inputs.

Do CIOs resist them

I believe they do in some cases. Sometimes it is the feeling that they are intelligent enough to assess various technologies themselves or that they could seek references from fellow CIOs in the industry. At other times CIOs feel they will dilute their importance in their organizations having positioned themselves as IT experts. They may not be wrong at all times but in some cases it is their own interest that takes precedence over organizational interest. So this needs a proper assessment.

How to use these agencies

When organizations hire them they pay them a handsome fee for using such services. There may be various levels of services offered and each may have their fee structure. Though some organizations may flaunt such association as a status flag, they still have to extract value for the fee they pay. I have used them in the past and was able to get sufficient help to justify the hiring and was therefore able to renew the contract as also upgrade the level of engagement. Let us look at a few ways to utilize such services:

  1. Use their research database: Usually these agencies have several analysts who conduct research on a regular basis and publish such papers for limited viewing. As a subscriber, we can access relevant research notes from their large database and contents of these papers are usually rich and not found in normal publications.

  2. Raising a specific query: Services of their experts can be availed of by raising a specific query either through a mail or we can ask for a telephonic conversation with the expert. If our questions are precise, the answers will be clear and can help us in our decision making process.

  3. Seminars: Seminars are usually held at periodic intervals and though the participation requires paying a fee, it is complimentary for the subscribers. These provide opportunities for a face-to-face meeting with some of the experts. I have found these meets very useful and I often felt that experiencing once such event was equivalent to attending a dozen of usual vendor-led seminars.

  4. Industry meets: Subscription models may include a proactive engagement by these agencies, i.e. their experts coming for these meets to discuss with you specific issues of your organization and to offer advice. They may also arrange for a meeting of your peers from the industry segment so that specific issues of that sector are the focus of the discussion.

  5. Help in vendor negotiation: As the research agencies have in-depth information on vendors and their product sale throughout the world, they can lend assistance to us regarding the likely price points on which our deal can be closed. There are various models of this assistance but some savings is achievable.

  6. Help in seeking approvals from the management: Expert opinion given by these agencies becomes very handy when seeking management approvals for our projects. Managements usually give credence to the endorsement from these agencies.

Many people often get deterred by the huge fees that they have to pay; but I believe, if we really require and avail of such services, it is possible for us to extract value that is greater than the amount incurred.

August 1, 2011  7:14 AM

Use the consultants effectively

S R Balasubramanian Profile: S R Balasubramanian

With increasing complexities of business and with additional load in terms of the assignments to be completed, the CIO looks for some external help to see him through these difficult periods. This external assistance comes from experts in specific areas and they fill in the knowledge and skill gap that the organization has. We term them as consultants and hire them to help us achieve the objectives that we have set for ourselves.

Consultants fill in to help us in the areas of redefining IT architecture or business process improvement or recommending solutions for various business issues or as implementation partners, software developers, security consultants, etc. These consultants play a stellar part in our quest for success and therefore they have to be used well.

Having been a consultant myself, I have seen the story from the other side. I often completed assignments successfully and got sign off from the client, but when I used to visit them later I would find my report lying in a shelf, gathering dust. Though unhappy with the situation, I did learn a lesson: the consultants are not always at fault; a lot depends on the customer organization and its resolve to get the best out of the consultant. So when I got into a CIO role, I decided to practice what I preached. So let me put down a few factors that I learnt were important:

  • Selection: It is very important to have the right person/ organization to help us in our endeavor to succeed in our objectives. The evaluation process must be adequate to assess the relative strengths and capabilities and important stake-holders in the organization should be involved in the decision making. In some cases the procurement department gets into the picture and influences selection based on the ‘lowest cost’ parameter. This is where many organizations go wrong.

  • Proper brief to the consultant: The start is of a great significance. Right at the beginning we must give a complete background of the assignment, the stated objectives, expectations, and get the key people in the organization involved in the project. This sets the consultant on the right path and his work proceeds towards the objectives as defined. Consultant’s understanding of the organization and its people gets a firmer footing and he understands the underlying forces that he may have to steer clear of.

  • Working with the consultant: There is always a tendency to leave the work to the consultant and expect him to deliver. This, at times, can boomerang back at us. It is therefore advisable to interact with the consultant at regular intervals, both formally and informally. This helps in two ways, one that it motivates him since it conveys that we are serious about the work and secondly it helps us correct him in case he has gone off the track.

  • Regular monitoring: It is important to have a proper monitoring or review mechanism. It is ultimately our responsibility and therefore we need to keep a track of the progress and take suitable measures in case of a slip up. The matter can either be taken up sternly with the consultant or escalated within the organization for addressing it.

  • Read their final report, whet out and seek resolutions: Often times the report submitted by the consultant is faithfully received and distributed to the people concerned. Since the project gets over, it is business as usual and everyone forgets about the report and its findings. As we say proverbially, ‘the report gathers dust’. This, in my opinion, is criminal. We must take responsibility to see that the findings are implemented and report the matter to the higher-ups if action is ignored.

  • Take responsibility: In the ultimate analysis, it is the responsibility that we demonstrate which carries us through. It is easy to lead the normal life of a commoner and lament for the sad state of affairs. But it’s a difficult task to take lead in getting the work through and stamp the imprint of success. It is good to be different even if we have to take a difficult path.

July 25, 2011  9:57 AM

Four server virtualization deployment challenges to watch out for

S R Balasubramanian Profile: S R Balasubramanian

I have so far talked about virtualization and possible benefits that arise from deploying it in our organizations. I have also spoken on this subject at various seminars and have been in conversations with my professional colleagues from various companies. However, to my finding, virtualization doesn’t take shape in many of the organizations and its introduction remains a challenge. Let us examine a few such cases.

  • Insufficient understanding

Large organizations are usually aware of this solution, but I wish to refer to a host of small and medium organizations who remain untouched by this technology. I have met and discussed this subject with quite a few IT heads from these companies and find that though they have heard about this subject and understood a little bit, they still do not know enough to recommend and use it in their set-up. They take the safer route of adding a few more servers to take care of extra load and this is easy since it involves an incremental investment. It is best for such firms to retain an advisor who can help the management with a long term technology plan.

  • Replacing old servers

The story at some of the larger companies is a bit different. Here we have IT Heads who are better informed and well aware of the subject through interaction with various users and vendors in seminars that they attend. However, they hold themselves back not knowing what to do with existing servers. They say that they need only say two servers and cannot do away with other servers they have and hence cannot invest in something much bigger.

I have often asked them when would a time come when they would have to replace all servers so that they can opt for virtualization; for they will always have servers of different vintage. I could persuade a couple of such organizations to start virtualization with new applications and move the older ones as and when the old servers age and get due for replacement. These organizations now look back and say clearly that they took the right decision.

  • Not selecting the right implementation partner

Some CIOs do get carried away pinning confidence in the capabilities of the internal team, thus, trying to do most of the tasks themselves. At other times the selection of the implementation partner is faulty and they appoint one who quotes lesser. This leads to an avoidable problem resulting in a failed implementation or a sub-optimal solution delivery. One needs to realize that the technology is complex and needs to be implemented well to derive clear benefits.

  • Extracting full benefits of the technology

Implementation of virtualization requires adequate planning with proper allocation of server resources to various applications in a manner that allows an optimum use of resources and at the same ensuring a good performance for all jobs being run. People are often satisfied with some level of partitioning of the processor pool whereas more can be achieved. The technology also provides a good number of features which lets us extract more out the boxes we possess. For example I know of many an organization who do not use features like cloning, dynamic allocation of processor pool, resource management tools, mirroring of applications enabling fall back in case of failure of a processor, disaster recovery planning etc. A vanilla implementation therefore gives us benefits but only as much and no more.

I will conclude with my opinion that this technology is immensely useful and it is for us to make full use of its features to extract maximum benefits.

July 18, 2011  8:49 AM

Top eight benefits of virtualization

S R Balasubramanian Profile: S R Balasubramanian

In my previous post, I tried to demystify server virtualization and made up a case for considering this technology for use as it helps optimize resources. For those who are first time users, doubts arise about its efficacy and its real benefit. Any IT investment proposal, such as in virtualization, has to be supported with a cost-benefit analysis so that it is approved by business.

Benefits are real; I have experienced them. How much we gain will depend on the mileage that we extract from technology and our propensity to try and innovate. Let me explain various benefits that virtualization can bring in. Following are the key areas where we can see gains:

1. Better utilization of hardware resources:

You can subdivide the processor and assign more than one application to it. For instance, I have often run four different applications running under different OSes, assigning them to a single processor. In the normal course, processors may be fully loaded or partially loaded and therefore we have server resources that lie idle and when we count total idle capacity in various servers, we may find a huge unutilized capacity. Since virtualization creates a pool, we can assign desired resources to each application.

2. Minimum physical space required:

Since we utilize fewer servers the space requirement in the data center comes down drastically if servers are stacked in a rack. In these days when space is at a premium, virtualization comes as a boon to us.

3. Lower power consumption:

Since we use fewer servers, the consumption of power would be low, despite the processors being loaded fully. That reduces the amount of heat generated by servers, and correspondingly, even the power consumed by air conditioning systems is also lower. In one of our recent implementations, we proved that the power consumption could be lowered by 40% with virtualization implementation.

4. Lower investment (capex) on hardware:

Proper capacity planning could see a drastic reduction in the capital expenditure that we incur on server buying. For instance, we had blade servers and by creating a pool across several blades we were able to use the available resources and thus put away the investment proposal that was on my desk. In case we host our applications or use external resources, expenses would come down.

5. Less maintenance overhead of IT:

Virtualization simplifies server management as the entire server farm can be managed through a single console. In addition, recurring expenses on AMC and other costs reduce.

6. Provision of resources on demand:

In a conventional environment, since we dedicate a server for each application, we are at our wit’s end when we have to make available sever resources for any urgent requirement. In a virtualized environment, we can make available additional resources on demand from the pool we create. In additional we can cater to a periodic demand (say month end or year-end processing0 by reducing the resource allocation to any non-critical application and make it available temporarily to the ERP or any mission critical run.

7. Easier to do patch management and upgrade:

We used to create a clone of a server and apply patches on the original file. If for some reason, the new version did not run, we could revert to the old version within minutes. The same process applied to software version upgrades and this was a great facility which made these tasks easier.

8. Disaster recovery planning:

Various features exist through which you can recover fast in case of any interruption due to hardware failure. The entire set of programs can be backed up on a different physical server and can be activated quickly.

How to convince the management

These benefits are ones that I was able to enjoy and once implemented we went about quantifying some of the benefits and demonstrating them to the management. The one question that I am often asked is: How did I justify the investment to the management at the time of taking approval?

I, of course, had problems in working out a cost-benefit; and therefore took a different stand. I worked out figures showing investment that we would otherwise make on additional servers if we did not go in for virtualization: that figure being much higher than the investment in virtualization. It worked and I got the required approvals.

July 11, 2011  8:37 AM

Server virtualization demystified

S R Balasubramanian Profile: S R Balasubramanian

Virtualization as a subject has been talked of for many years now but it is only during the last few years that it has come into large scale usage by many organizations and data centers. While large organizations have embraced this technology due to sheer necessity, many small and medium-sized organizations are still out of this gambit. So it makes sense to explain this technology solution and make it easy to understand.

Virtualization comes in various forms viz. server virtualization, storage virtualization, application virtualization or desktop virtualization, but we will talk of only server virtualization here.

What is server virtualization?

In simple terms, virtualization is a method of running multiple independent virtual operating systems on a single physical computer. Let us say it is the masking of server resources from server users, including the number and identity of individual physical servers, processors, and operating systems. All server resources are put together as a pool from which each application or task draws out the resources it needs, thus making the application or the user believe that his task is running on a separate and dedicated server.

How this works is simple to understand. Virtual servers work through a middle layer called a ‘hypervisor’, which masks the servers from the users and takes over the task of allocating resources to each task from the server pool. To understand further let us consider the following statements:

  • Virtualization enables us to combine servers from multiple generations into the same virtualized server pool.

  • Virtualization allows a group of inefficient servers to be replaced with a fewer number of machines.

  • Virtualization is a software that allows a piece of hardware to run multiple operating system images at the same time.

The need for virtualization

In the conventional set up, we keep on adding servers as we introduce more applications in the organization and when the numbers grow very large it becomes unwieldy and difficult to manage. Further, every application consumes resources differently; leading to some servers being strained to the full and some others have it easy with very little usage. This leads to sub-optimal utilization of server resources which is undesirable. Adding to this is the difficulty of provisioning space to host several servers.

How to implement virtualization

If you are thinking of implementing virtualization, I would recommend the following steps:

  1. Clearly assess the requirement of server resources in a three-year horizon, taking into account additional applications that are likely to be introduced; and the projected growth of the organization leading to higher number of users and the increasing size of data to be processed.

  2. Evaluate and select a virtualization software that is appropriate, given the current IT landscape and size of the set-up.

  3. Re-asses the hardware resources and plan new servers that would make use of this new environment.

  4. Choose an implementation partner who has adequate experience and expertise in the software selected.

  5. Work closely with the partner to work out an optimal design that works best to accommodate your applications.

A breakthrough technology?

I think it is. It is amazing how the researchers worked out a way to break the paradigm of considering the processor as undividable and to create a mechanism by which the processor lends itself for manipulation. It is a wonderful solution to leverage on and I hope most of us use this to make optimum use of the resources.

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