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Capacity planning is a critical part of maintaining a virtualized infrastructure. Measuring and tracking resource use will allow administrators to make informed decisions and avoid problems. But, while virtualization enables organizations to more efficiently use available resources, appropriately allocating those resources sizing VMs can be a challenge. Overprovision a VM and those resources will be wasted, requiring additional hardware that may not be needed. Under-provision and you risk hurting application performance. With those challenges in mind, here are five quick links that can get you started on the right track to monitoring and tracking resources and strategies for right-sizing VMs.
Why is capacity planning so difficult?
Virtualization complicates a task that had traditionally been straightforward. When you added a new application, you ordered a new physical server. With virtualization, a new VM can be provisioned in minutes, but this ease of deployment can create managerial and planning challenges and idle or unneeded VMs waste resources.
Overprovisioning VMs is not the solution
IT administrators worried about poor application performance can sometimes fall into the trap of overprovisioning VMs. The problem is, overprovisioning wastes resources and leads to premature hardware purchases.
Refresh your private cloud capacity planning
Capacity planning in a private cloud environment is especially difficult. The self-service nature of private clouds mean users can easily overprovision VMs and quickly eat up computing and storage capacity. Clear policies and effective monitoring can help avoid this problem.
Answers to your virtual capacity planning questions
Virtualization enables new levels of consolidation, but one of the easiest traps to fall into is trying to cram too many VMs onto a host. It’s tempting – and easy – to fill out a server’s available capacity, but it’s important to remember to leave enough room to be able to move or failover VMs.
Different approaches to capacity planning
As anyone will tell you, data center capacity planning doesn’t happen by accident. In this article, Advisory Board members share their approaches to capacity planning, offering advice that can help you shape your own plan to track and manage resources.