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Saturday, May 15, 2021

AWS, FreeBSD AMIs and WebScale application FlexBook

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I've started to play with AWS cloud computing. When I'm starting with any new technology, the best way how to learn it, is to use it...
Wednesday, March 24, 2021

What's new in vSphere 7 Update 2

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vSphere 7 is not only about server virtualization (Virtual Machines) but also about Containers orchestrated by Kubernetes orchestration engi...
Wednesday, February 17, 2021

VMware Short URLs

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 VMware has a lot of products and technologies, here are few interesting URL shortcuts to quickly get resources for a particular product, te...
Sunday, February 14, 2021

Top Ten Things VMware TAM should have on his mind and use on a daily basis

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The readers may or may not know, that I work for VMware as a TAM. For those who do not know, TAM stands for Technical Account Manager. VMwar...
Thursday, February 04, 2021

Back to basics - MTU & IP defragmentation

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This is just a short blog post as it can be useful for other full-stack (compute/storage/network) infrastructure engineers. I have just had ...
Monday, January 11, 2021

Server rack design and capacity planning

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Our VMware local SE team has got a great Christmas present from regional Intel BU. Four rack servers with very nice technical specifications...
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Sunday, November 29, 2020

Virtual Machine Advanced Configuration Options

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First and foremost, it is worth mentioning, that it is definitely not recommended to change any advanced settings unless you know what you a...
Tuesday, November 24, 2020

vSAN 7 Update 1 - What's new in Cloud Native Storage

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 vSAN 7 U1 comes with new features also in Cloud Native Storage area, so let's look at what's new. PersistentVolumeClaim expansion K...
Monday, November 23, 2020

Why HTTPS is faster than HTTP?

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Recently, I was planning, preparing, and executing a network performance test plan, including TCP, UDP, HTTP, and HTTPS throughput benchmark...
Saturday, November 21, 2020

Understanding vSAN Architecture Components for better troubleshooting

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VMware vSAN becomes more and more popular, thus more often used as primary storage in data centers and server rooms. Sometimes, as with any ...
Thursday, November 05, 2020

NSX-T Edge Node performance profiles

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It is good to know that NSX-T Edge Node has multiple performance profiles. Those profiles will change the # of vCPU for DPDK and so leave mo...
Tuesday, September 22, 2020

vSAN - vLCM Capable ReadyNode

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VMware vSphere Lifecycle Manager (aka vLCM) is one of the very interesting features in vSphere 7.  vLCM is a powerful new approach to simpli...
Friday, September 11, 2020

Datacenter Network Topology - Dell OS10 MultiDomain VLT

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Yesterday, I have got the following e-mail from one of my blog readers ... Hello David, Let me introduce myself, I work in medium size compa...
Tuesday, September 01, 2020

Why NUMA matters?

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This is a very short blog post because more and more VMware customers and partners are asking me the same question ...  "Why NUMA matte...
Wednesday, August 26, 2020

iSCSI Best Practices - 2020 review

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I have just listened to the Virtually Speaking podcast episode Back to Basics: iSCSI Back in 2014, I wrote a blog post about iSCSI Best Pra...
Wednesday, August 12, 2020

Could not connect to one or more vCenter Server Systems: https://vCenterFQDN: 443/sdk"

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When I have logged in vCenter 7 vSphere Client in my home lab, I have experienced the message "Could not connect to one or more vCenter...
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