The Doppler Quarterly Summer 2018 - Page 57

How is your cloud doing? Is it delivering performance according to plan? Is it generating value for the organization as quickly as you projected? If you are relatively new to the cloud, you are probably asking yourself these exact ques- tions – and coming up empty for answers. The problem cloud users run up against is that clouds operate in a shared resource model that provides less consistency, predictably or reliably than dedicated data center environments. Clouds are harder to manage, harder to model and harder to measure. Performance in “like instances” can vary widely, and today’s “performance management” tools only focus on use (consumption metrics) and are not configured to truly measure the performance throughput (outcome metrics) of your cloud service. To deal with these issues, the industry is starting to embrace a new manage- ment model that focuses on integrating continuous testing/ continuous opti- mization into cloud operations. This model focuses less on metrics tied to indi- vidual components and more on the quality of service - the consistency, predictability and reliability - that the cloud delivers. Tools Are Not Keeping Pace Before we look more closely at the new quality of service (QoS) model, let’s explore why cloud management tools are not keeping pace with the demands imposed by today’s rapid cloud adoption. First, traditional tools assume you own your IT resources. They enable you to manage individual components like you did in the data center – the network, the storage, the compute resources. But these traditional tools do not take into account how cloud is inherently different from the legacy data center – how it is an integrated service, not just the sum of individual parts. A cloud can have all the power and capacity in the world, but as a shared, multi-tenant service, if for any reason it doesn’t provide the right resources at the right time, the cloud’s delivered performance will vary, impacting the application and the cus- tomer experience. Second, if you’re using traditional, so-called “ground tools” to manage your cloud, you’re going to spend most of your time only managing the “availability” of your cloud component resources. Availability means nothing if the cloud service isn’t capable of delivering the desired performance, functionality and SUMMER 2018 | THE DOPPLER | 55