Technical

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VMware vSphere can virtualize itself + 64-bit nested guests

VMware vSphere 5 makes it even easier to virtualize ESXi, and can now run nested 64-bit guests.

Taking snapshots of VMware ESX 4 running in a VM

VMware ESX 4 can virtualize itself, and by using a special undocumented configuration setting it is now possible to take snapshots of virtual VMware ESX 4 systems.

VMware vCenter CapacityIQ 1.0.1 for vSphere

VMware vCenter CapacityIQ 1.0.1 is now fully integrated with VMware vSphere. The product deploys quickly as an OVF virtual appliance and the user interface is a vSphere Client plugin.

Easy recovery from a full VMware ESX datastore

With VMware vSphere, ESX, and VMFS, running out of space on a datastore does not cause damage to virtual machines. It is easy to recover without even a guest OS reboot.

PowerShell Prevents Datastore Emergencies

When a datastore in your VMware vSphere environment is about to fill up, you can have vCenter automatically spring into action to prevent downtime by using Storage VMotion.

Use Coreinfo to view VM core and socket count

By using an unsupported VM configuration file (vmx) option called cpuid.coresPerSocket, it is possible to present multi-core virtual CPUs to VMware ESX virtual machines.

VMware ESX 4 can even virtualize itself

VMware ESX 4 can run multiple virtual instances of ESX 4 on a single physical server and even allows powering on and VMotion of nested VMs inside virtual ESX (vESX). Perfect for a small VMware vSphere test lab!

VMware vCenter Server performance stats levels

VirtualCenter (vCenter) database storage requirements grow rapidly as administrators increase the levels from default settings.

VMware vCenter really needs an agent

As vCenter Server (VirtualCenter) collects performance data, it is stored in the VC database. As the data ages, it is aggregated to save storage space.

VM Encapsulation

Encapsulation is one of the four key benefits of VMware virtual machines.  On the surface it may seem like this is a common feature across all virtualization platforms — but it’s not. If you are a VMware ESX administrator, you know that a VMware virtual machine consists of several files,  normally contained in a single […]

Better console for PowerShell and VITK

By using Console2 with PowerShell and the VI Toolkit, users have much better text manipulation capabilities as well as the option to use different fonts.

VI Toolkit (for Windows) 1.5 and the PowerShell prompt

The VI Toolkit for Windows overrides an existing PowerShell prompt function. Here is one simple way to restore a desired setting.

Get a better font for PuTTY

PuTTY is a popular SSH client for Windows — it works great and it’s free.  Out of the box it uses the Courier font, which looks like this: I prefer the appearance of a traditional Linux (X11) console font.  To me, it makes text much easier to read.  A few years ago I came across […]

Finding thin-provisioned virtual disks with PowerShell

Even though the VI Client does not offer creation of VMs with thin-provisioned disks, they may exist. Use a PowerShell script to identify them.

Clean up vCenter with PowerShell after SCVMM leaves

When System Center Virtual Machine Manager (SCVMM) connects to VirtualCenter/vCenter, several changes are made. Learn how to recover everything with PowerShell.

VI Client SSL thumbprint cache cleanup

Duncan at Yellow Bricks has a handy post on cleaning up your VI Client cached server address list. There is a related issue with cached self-signed SSL certificate thumbprints.  When you first connect to a VirtualCenter Server or ESX host, you see a dialog box:

Automating VI Client login

The VI Client (vSphere Client) accepts several command-line arguments that can help administrators automate logging in to vCenter or ESX.