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Friday, April 10, 2026

MS-SQL Windows Server Failover Clustering on VCF - Best Practices

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MS-SQL Windows Server Failover Clustering  (WSFC) is used for MS-SQL High Availability deployment on VMware VCF.  Traditional (historical) W...
Sunday, March 08, 2026

Virtualization of Microsoft SQL and AD

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Lot of customers are still dependent on Microsoft operating systems and applications. The most business critical applications are Active Dir...
Sunday, January 04, 2026

Private VLANs (PVLANs) in VMware vSphere ESXi

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Private VLANs (PVLANs)   provide a powerful way to improve network segmentation and security without creating a large number of traditional...
Monday, December 15, 2025

VMware Cloud Foundation 9.0 Architecture and Fleet Components Latency

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VMware Cloud Foundation (VCF) 9.0 Architecture is prepared to cover the whole planet. If your business covers the whole globe you proably ha...
Friday, December 05, 2025

VMware Certified Distinguished Expert (VCDX)

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VMware is excited to announce the evolution of this iconic certification into a new, broader, and more inclusive framework: the VMware Certi...
Monday, September 01, 2025

How to expand ZFS on FreeBSD

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Running out of disk space is one of the leading causes of IT outages. In this blog post, I will show you how to expand storage on FreeBSD wi...
Saturday, August 23, 2025

Datacenter Power Costs and Their Impact in the Virtualized World

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I recently conducted a quick analysis of a VMware vSphere–based virtual datacenter for a customer, and here’s what I found. The average mont...
2 comments:
Tuesday, August 05, 2025

Password expiration for both the VCSA root user and the vSphere administrator

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Password expiration for both the VCSA root account and the vSphere administrator (typically administrator@vsphere.local) is a common issue, ...
Wednesday, July 30, 2025

vSAN ESA RAID5 issue? Not really, but ...

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I was observing unexpected behavior in my vSAN ESA cluster. I have a 6-node vSAN ESA cluster and a VM with a Storage Policy configured for R...
Friday, July 25, 2025

vSAN ESA RAIDs

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vSAN ESA is VMware’s software-defined storage solution. Each virtual hard disk (vDisk) is represented as an object within the vSAN datastor...
Tuesday, July 15, 2025

How do I check the build or version number of VMware ESX?

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The ESX build (version number) information is available in the Summary tab of the vSphere Client , but in larger environments it is worth t...
Thursday, July 03, 2025

VMwareOpsGuide.com has been retired

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I'm an architect and designer, not involved in day-to-day operations, but I firmly believe that any system architecture must be thoughtf...
Sunday, June 15, 2025

Veeam Backup & Replication on Linux v13 [Beta]

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I have finally found some spare time and I decided to test Veeam Backup & Replication on Linux v13 [Beta] in my home lab. It is BETA , ...
3 comments:
Saturday, June 14, 2025

PureStorage has 150TB DirectFlash Modules

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I have just realized that PureStorage has 150TB DirectFlash Modules .  That got me thinking.  Flash capacity is increasing year by year. Wha...

Virtual NIC Link Speed - is it really speed?

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This will be a quick blog post, prompted by another question I received about VMware virtual NIC link speed. In this blog post I’d like to...
Tuesday, June 03, 2025

How to troubleshoot virtual disk high latencies in VMware Virtual Machine

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In VMware vSphere environments, even the most critical business applications are often virtualized. Occasionally, application owners may rep...
Monday, May 19, 2025

Are you looking for VMware SRM and cannot find it?

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Here is what happened with VMware Site Recovery Manager. It was repackaged into VMware Live Recovery . UPDATE 2025-07-07: Nice VCF 9 Disas...
Thursday, May 15, 2025

How to run IPERF on ESXi host?

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iperf is great tool to test network throughput.There is iperf3 in ESXi host, but there are restrictions and you cannot run it. There is the ...
Wednesday, May 14, 2025

Test Jumbo Frames (MTU 9000) between ESXi hosts

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When we want to enable Jumbo-Fames on VMware vSphere, it must be enabled on physical switches virtual switches - VMware Distributed Switch ...
Thursday, May 08, 2025

Business Continuity and Disaster Recovery Terminology

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Almost 10 years ago, I gave a presentation at the local VMware User Group (VMUG) meeting in Prague, Czechia, on Metro Cluster High Availabil...
1 comment: