Comparing Fault Tolerance Performance & Overhead Utilizing VMmark v1.1.1

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VMware Fault Tolerance (FT), based on vLockstep technology and available with VMware vSphere, easily and efficiently provides zero downtime and zero data loss for your critical workloads. FT provides continuous availability in the event of server failures by creating a live shadow instance of the primary virtual machine on a secondary system.  The shadow VM Read more...

VMware vSphere™ 4: The CPU Scheduler in VMware® ESX™ 4

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VMware recently published a whitepaper that discusses changes in CPU scheduler in ESX 4. The paper also describes a few key concepts in CPU scheduler that should be useful to understand performance issues involved with CPU scheduler. Specifically, it attempts to answer the following questions: How CPU time is allocated between virtual machines? How well Read more...

Virtual Machine Monitor Execution Modes in vSphere 4.0

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Recently we published a whitepaper describing the VMware Virtual Machine Monitor (VMM) execution modes in vSphere 4.0. The VMM may choose hardware support for virtualization whenever it's available or may choose software techniques for virtualization when hardware support is unavailable or not enabled on the underlying platform. The method chosen by the VMM for virtualizing Read more...

VMware Fault Tolerance Performance

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If you have been following the virtualization blogosphere then you may have noticed that last week we published three interesting performance whitepapers at once. I want to talk about the “VMware vSphere 4 Fault Tolerance: Architecture and Performance” whitepaper in this blog. VMware Fault Tolerance also known as FT is one of the most anticipated Read more...

VMware vCenter Site Recovery Manager Performance and Best Practices White Paper

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VMware vCenter Site Recovery Manager (SRM) is a component of the VMware Infrastructure that accelerates recovery for the virtual environment through automation, ensures reliable recovery by enabling non-disruptive testing, and simplifies recovery by eliminating complex manual recovery steps and centralizing management of recovery plans. A whitepaper on VMware vCenter Site Recovery Manager Performance and Best Read more...