Premium Content

Access "What not to do when you’re consolidating: Five common VM mistakes"

Published: 10 Dec 2012

To get good virtual machine (VM) consolidation ratios, avoid these common mistakes and apply a little common sense to VM specification and placement. 1. Creating contention To achieve high consolidation ratios, you’ll want to avoid contention. That can happen when you have more than one VM on the same host, network or storage unit, leading to the possibility they could compete for resources.  Focus on the “four core” resources— CPU, memory, disk and network—and make sure that you don’t gather intensive VMs on the same resource. Separate network- and disk-intensive VMs on different networks or spindles to massively increase scalability, while at the same time reducing the chance of performance problems later. 2. Overtaxing the scheduler Placing two CPU-intensive VMs on the same physical host will not only tax the CPUs unnecessarily, but also cause the hypervisor’s “scheduler” to work harder. The scheduler decides where the VM’s vCPU executes, and the more vCPUs you allocate to the VM, the harder the scheduler must work to allocate resources to them. Use ... Access >>>

Access TechTarget
Premium Content for Free.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

What's Inside

Features

More Premium Content Accessible For Free

  • Virtualization management challenges
    vm_management_ch1.png
    E-Chapter

    Virtualization admins' top concern is no longer choosing a hypervisor -- it's choosing the right tools that will help with management, improve VM ...

  • VM management and capacity prediction
    vm_management_ch1.png
    E-Book

    As hypervisor features have become more similar, the next vendor battleground will be over management software. Microsoft and VMware have similar ...

  • As virtual machine migrations accelerate, don't get left behind
    virt_machine_migrations.png
    E-Handbook

    Workload mobility is a key part of virtualization, and it should continue to get better and become a bigger part of an IT admin's everyday operations...