Unless your head has been burried in the sand for the last year, terms like virtualisation and cloud computing should be starting to sound as familiar as your morning alarm clock. So you’re probably thinking, “What’s new?”…well here we go…
The Virtualisation vendor battle continues, with Microsoft and Citrix releasing stats on their market share for virtualisation projects, each with differing results. These two vendors certainly have increased efforts in this area and have increased the money, time, resource and marketing budgets alike. Here at Servo we try to take an unbiased approach. We have carried out many virtualisation excercises on all three platforms (VMware, Microsoft and Citrix) and there are significant benefits to be had from all three platforms which very much depend on the customers target environment. Interestingly VMware are claiming that 89% of all virtualised applications in the world are sitting on VMware. Not a bad statistic from the market leader.
The ability to drastically reduce the number of servers in your data centre is a no brainer for most, however there seems to be a changing landscape when looking at the driving force behind virtualisation projects.
The No. 1 objective for clients today when undertaking a virtualisation exercise is to improve business continuity and disaster recovery. From a business continuity perspective, our customers are looking to eliminate downtime as much as possible, often in many cases, entirely removing downtime from the business! We now work in an age where availability provides the edge, and downtime costs money, lots of money!
One point i was recently reminded of by a customer is, Planned downtime is still downtime! Virtualisation technologies allows for hardware maintenance without the need to plan downtime or schedule work out of hours. Through the use of tools like VMware’s Vmotion and high availability, users can migrate live virtual servers from one physical host to another, which will allow for maintenance to be carried out. When you consider on average over 60% of downtime is planned, this alone can help customers dramatically.
This is all well and good, but what about the unplanned downtime? VMware’s vSphere 4 now includes enhanced tools for continuity, including the all new Fault tolerance for critical applications. Quite simple, this provides clustering like technology without the massive headache usually expereinced when trying to implement high availability clustering. By creating a mirrored copy of the virtual machine on a different host, if the primary host fails, the mirrored copy takes over, providing continual service with zero downtime. This is advised only for highly critical applications as resources are effectively doubled in the mirrored copy.
As we see more businesses adopt server virtualisation trends are becoming clear. On average, customer deployments of server virtualisation are stopping at 30% of the server estate. As with most new technologies, businesses tread carefully at first and virtualisation is no exception, if anything, the first steps into virtualisation represent a huge risk. For this reason, customers will look to virtualise the “low hanging fruit” first, services such as file and print, AD servers, and less critical business applications. More often than not we see the projects slow as larger, more demanding, and critical applications come into the fold. What will be the impact of bringing exchange onto the virtual platform, how will our database server react to running in a virtual environment?
VMware’s new CapacityIQ tool, recently released, now provides customers the ability to asses of the impact on the virtual environment, should further apps be added. It can also be used to provide intelligence on resource usage patterns so further resources requirements can be accurately planned for.
Why stop at the server? With yesterdays release of Windows 7, the desktop will surely be ear marked for virtualisation. As the majority of businesses never made the jump to Vista, they now face a full OS upgrade to get to 7. Not a simple task, certainly as the desktop count increases, the upgrade resource is likely to hit the roof. Bringing the desktops into the data centre will streamline and simplify management, reduce maintenance costs and support costs and provides an opportunity to increase security.
So what is stopping you? Well besides the initial financial outlay, the time and the human resource to carry out such a significant project, the end user experience is key.
There is little benefit to be had if the end user experience is not as good, or better. Support calls will increase as user find themselves with an unfamiliar desktops and lost personal settings. The bigger the deployment, the bigger the challenge. We have been working with vendors in this area to provide end users with the look and feel of a personalised desktop, whilst still only maintaining a standard desktop image.
But what about my storage costs? The cost of disk space in a fat client is cheaper than ever, with some sources claiming as low as £0.2o per GB as the cost of storage. Bringing the desktop into the data centre means users data will now reside on enterprise class storage at a far higher cost. The good news is, technologies such as de-duplication and storage optimisation can reduce this impact.
I’m out of the office, now what? How do you provide a desktop to your users when they have no connectivity out of the office? A very valid concern! New technologies from the virtualisation vendors allow for offline desktop mode. A user can download a copy of his/her desktop to the client, fully encrypted and work on this desktop copy whilst out of the office. When they next connect to the network, the changes are copied back.
Both desktop and server virtualisation present a real opportunity for businesses to reduce costs on a huge scale. Coupled with the opportunity to reduce management time and support costs, these solutions surely cannot be ignored.
Servo has helped many clients take this a step further with our mature private cloud offering. Having invested over £1million in state of the art technology, our private cloud boasts best of breed storage, servers, software and networking. This tried and tested platform has been used to deploy applications as a service for many clients. With little start up investment required, our customers can deploy new applications out of our Tier 3 datacentre with ease.
For more information on Servo’s cloud offering or to discuss how we can assist with virtualisation projects visit www.servo.co.uk