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Defining an ideal virtual server consolidation ratio
This article is part of the Virtual Data Center issue of February 2012, Vol. 37
The ideal virtual server consolidation ratio can be elusive. Larger servers and higher core counts are tempting, but licensing models and uptime concerns are keeping IT managers from overconsolidating. When it comes to designing a virtual server consolidation strategy, how much is too much? How much is too little? If you’re using virtualization, that can be a surprisingly difficult question to answer. In the early days of virtualization, the goal for a server consolidation ratio was usually “the more the merrier.” Stuff as many virtual machines (VMs) on to a server as it can possibly hold, reasoned IT managers, to get maximum bang for your hypervisor software buck. But that was then, when virtualization was relegated to handling low transaction, lightweight workloads. These days, virtual servers host an increasing array of mission-critical applications that can’t go down, and certainly not for simple reasons like poor capacity planning. To a large extent, that has put the brakes on over-the-top virtual server consolidation ...
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Features in this issue
Get better consolidation ratios by avoiding these typical problems.
Finding the best virtual server consolidation ratio is difficult, and larger, virtualization-friendly servers do not necessarily ease the process.
The push for high utilization can cause serious VM performance issues, but proper VM resource allocation can prevent server over-consolidation in virtual data centers.
Columns in this issue
There’s no one-size-fits-all when it comes to data center servers and technology.