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vSphere Snapshot Basics – Part 1
What is a Snapshot? It is a point in time state of the virtual machine When you take a snapshot a delta disk gets created. If you create another snasphot another delta disk will be created The delta...
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vSphere Snapshot Basics – Part 2
More about Snapshots Snapshots are not backups, but backup software will leverage snapshots to take backups of the VM. When you take snapshots the delta disks can potentially grow to the size of the...
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What are Virtual Appliances?
Virtual Appliances are portable virtual machines. One can export a virtual machine as a virtual appliance, and then you can also import the virtual appliance back as a virtual machine. Virtual...
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What is vCenter Single SignOn?
It is very similar to an Active Directory Domain Architecture It is an authentication broker It configures a vsphere.local domain (in vSphere 5.1 the local domain was called as “system-domain”) The...
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What are Virtual Machine Templates?
In vSphere, Virtual Machine Templates are: Virtual Machines that cannot be powered on Virtual Machines that cannot be modified Templates are like gold images, you create a template and deploy multiple...
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Thumb rules for vCPU allocation
Here are some thumb rules (best practices) for capacity planning of virtual CPU (vCPU) allocation within your virtual infrastructure. These rules typically work 90 times of 100, however there would be...
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Thumb rules for memory allocation across virtual machines
Here are some thumb rules (best practices) for capacity planning of memory (RAM) allocation within your virtual infrastructure. These rules typically work 90 times of 100, however there would be...
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Find aggregate allocated VM CPU and Memory per host basis
Here’s a quick and dirty one-liner to find the total allocated CPU & Memory per ESXi host basis. This is useful when you want to get a quickly get your over-commitment ratios.
View ArticlevSphere Swap files
In a vSphere environment, when from the command line you list the virtual machines files in a virtual machine folder; you find that there are 2 files with an extension vswp. So what are these files?...
View ArticlevSphere 6.5 – What’s new
Here is an excellent playlist of videos from VMware Tech Pubs. The video list features some of the new features introduced with vSphere 6.5. If you plan to take the VCP 6.5 exam this is something that...
View ArticleSpace Reclamation in VMFS 6
VMFS6 file system was in vSphere 6.5. Of the many new features introduced with VMFS6, one of the notable features is Automatic Space Reclamation. Automatic space reclamation, also sometimes referred to...
View ArticleChanging IP Address or hostname of the vCenter Server Appliance
A couple of days back during a discussion in a class, someone asked me if it is possible to change the IP Address of a vCenter Server appliance. Short Answer: Changing of IP Address is allowed. However...
View ArticleWindows 2003 VM Guest customization no longer supported
Today I deployed a Windows 2003 VM in a test infrastructure. I did not want to spend too much time installing and configuring the OS hence thought of using Windows 2003 instead of something like a...
View ArticleLatest VMware tools package and version numbers
I was trying to figure out where can I find the latest VMware tools package and what build versions were released with what ESXi host build? And voila, all the information is already published by...
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