Scott Drummonds on Virtualization

Designing VMs with Performance SLAs


Consolidation amplifies the uncertainty of application performance. Still, VI administrators need a means of guaranteeing performance SLAs to their applications’ users. But the best VMware has been able to offer are resource controls, which are at best an indirect mechanism for sustaining application performance. With the acquisition of B-hive, now AppSpeed, VMware moved a step closer to allowing VI administrators to guarantee a performance SLA. As an application-aware latency measurement tool, AppSpeed may eventually provide feedback to vCenter to guarantee throughput levels. But it does not today. So how are VI administrators to guarantee application performance?

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vSphere 4.1: Performance Improvements


Last week I took my first vacation in a year and a half.  I had not missed a single day of work in 18 months.  So last week, when I was galavanting through Spain and running terrified, screaming, and covered in sangria through the streets of Pamplona, VMware made its biggest announcement in over a year: the launch of vSphere 4.1.  My old team put out what looks to be a wonderful “What’s New in Performance” paper so I want to take a few minutes to add my thoughts to some of the great work VMware has done.

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