Archives for: May 2010
Re: VMware vSphere 4 default installation settings (gabesvirtualworld)

In response to Gabes article on default installation settings there are some things I personally almost always do different and I wanted to point them out. Consider them my recommendations / best practices and not necessary VMware’s. I’ve added two (*) and have a different opinion on some of Gabe’s best practices (-) COS Memory: Although COS memory is “dynamic” I [...]

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Limiting your vCPU

I had a discussion with someone around limiting a VM to a specific amount of Mhz’s after I found out that limits where set on most VMs. This environment was a “cloud” environment and the limit was set to create an extra level of fairness. My question of course was doesn’t this impact performance? The answer was simple: No as [...]

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Hytrust Labs….

During VMware Tech Summit last week one of the few Labs I did get to do myself was the Hytrust Lab. Roughly a year ago I first got introduced to Hytrust. Hytrust is a policy driven appliance which enhances security and auditing for virtualized environments. Although I had seen multiple demos I had never actually played around with it. I [...]

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Disabling TPS hurting performance?

On the internal mailinglist there was a discussion today around how disabling TPS (Transparent Page Sharing) could negativitely impact performance. It is something I hadn’t thought about yet but when you do think about it it actually does make sense and is definitely something to keep in mind. Most new servers have some sort of NUMA architecture today. As hopefully [...]

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Jobs, Jobs, Jobs… we are still growing

We just keep expanding… the amount of work is insane and we need help. 19280 – TS Cloud Services- Consulting Architect (Enterprise) (US) 17471 – Senior Consultant- Cloud Services (US) 17473 – Senior Engagement Project Manager – Cloud Services (US) 18016 – Cloud Solutions Architect (US) …… I guess the list never ends. Before we can fill this positions I [...]

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Tech Summit –> VMworld Self-paced labs

This week all of VMware Technical Services gathered at the Hilton in San Francisco for the annual VMware TS Technical Summit. TS stands for Technical Services which basically means all field personnel of VMware, both pre- and post-sales. Besides all the great  deep-dive sessions there was also a gigantic lab. 200 seats powered by Cisco UCS and NetApp Storage. (As Vaughn has already shown [...]

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HA Retries

I am working on a special project at the moment. I noticed something I never realized before and wanted to share it with you guys. When a restart of a VM fails VMware HA will retry this. The amount of VMware HA retries is configurable as of vCenter 2.5 U4 with the advanced option “das.maxvmrestartcount”. The default value is 5. [...]

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