3rd October 2016
There are a number of different reasons why companies choose to migrate to the cloud. These include: increased reliability, better security, and improved flexibility. In many cases, these reasons are also related to cost. In theory, migrating to a virtual infrastructure using Microsoft Azure or one of the other major public cloud platforms should help to reduce costs. A number of expenses are reduced including the direct cost of purchasing and maintaining equipment, and also the hidden costs such as productivity which may be hampered by slow legacy equipment.
Unfortunately, in many cases, the promised cost savings do not happen, and over time, businesses face ever increasing monthly subscription costs, often without any real indication of what is driving the rising cost.
There are a number of factors which contribute to rising Azure Costs. Some of them are relatively straightforward to address, while others are more complex and systemic. Thankfully, in most cases, better management of cloud infrastructure can help to reduce Azure Costs and help to maintain a more efficient environment for applications and data.
In order to determine why your Azure Costs are rising, the first thing to consider is what are the elements that contribute to those costs.
Your Azure Cost is calculated based on the number of machines that you have, and the amount of time that they run for. E.g:
A basic A0 Virtual Machine with 1 core, 0.75GB of RAM, and a 20GB Disk will cost $0.018 per hour. Over the course of a calendar month, this will equate to a total cost of $12.96.
Realistically, a business will have a number of virtual machines that are configured to different roles, and these will usually be backed up onto a secondary subscription for added resilience. Configuration for SharePoint hosting including database servers, indexing, front end, and application servers will often require a fairly complex virtual infrastructure.
If your business was using 8xD2 quad core Azure virtual machines with 14GB of RAM and 200GB disk space each, the cost would be $0.52 x 8 = $4.16 per hour – this becomes $2995.20 per calendar month.
Over time, your business’ needs will change. In many cases, this is due to the amount of storage that you consume. While the cost of adding more disk space is relatively low, the amount of data that your business can generate across all staff will often expand enormously over time. Doubling the amount of disk space used can contribute significantly to the overall costs of the cloud. Each extra 2GB of SQL Database to your subscription can result in an additional cost of $4.98 per month. With several hundred people contributing additional files, multiple versions of documents, and large images the amount of data stored and the cost of that data rises exponentially.
In addition to the cost of storing the extra data, it also becomes necessary to choose higher specification machines to handle the data – again, increasing the spec of individual machines will contribute to a higher monthly subscription.
As noted above, the key factor in the ongoing cost of Azure is the amount of machines and the amount of time they are running for. igroup developed our Cloud Control Software to reduce cloud costs by directly addressing these issues.
In most cases, your infrastructure will not operate at peak levels all the time. This means that the spec of different machines can be reduced to lower levels when the full spec is not needed. As a result, the subscription is reduced. By reducing a machine from D3 spec to D2 Spec outside office hours would deliver a saving over the month:
By scaling back to the D2 machine for 12 hours per day, the combined cost over a month would would be reduced to $317.46 (a saving of $104.76 or 24.7%).
In addition to the ongoing cost savings that can be realised through the use of Cloud Control, it is also important for businesses to perform a full review of their infrastructure on a regular basis to assess whether it is fit for purpose and meets the actual needs of the business as it should.
igroup’s team are on hand to provide you with a full assessment of your current Azure infrastructure and from this, advice about whether we can help you through the use of Cloud Control and an infrastructure optimisation project. Please contact a member of our team today on 0207 099 0632, or by emailing us to firstname.lastname@example.org.
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