Joint post by Mattias Sundling, Dell vKernel Evangelist and vExpert ( @msundling ) and Stephen Spector, Dell Cloud Evangelist ( @SpectorAtDell )

The adoption of virtualization and now cloud services into the current enterprise datacenter is creating complexity not only within the physical and remote datacenters but also between the various business users and supporting IT groups. For example, the cause of a slow performing application for end-users can be blamed on so many various groups and technology that internal strife is sure to follow:

The prevention of this chaos is a priority for enterprise IT departments who have advanced tools available to properly manage capacity. Following these four steps, administrators can properly manage not only capacity but also unforeseen crises:

  1. Analyze Utilization – establish as “baseline” for comparisons and success measurements
  2. Analyze Trending – measure at multiple time-points to generate a trend and change in utilization
  3. Forecast Capacity – leverage trends from step 2 to estimate future needs on resources
  4. Adjustment – continuous monitoring and adjustments to step 3 provide an effective methodology to keep system current for user needs

The white paper also provides three key takeaways for planning performance and capacity:

  1. Capacity is NOT about how much you can cram into your hosts/clusters
  2. Capacity is more than just applying mathematical calculations; you need best practice intelligence and logic
  3. You will ALWAYS have a next bottleneck

This post is taken from the VKernel white paper, Planning for Performance and Capacity in Virtual Environments by David Davis & Scott Herold.