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December 4, 2008  7:58 PM

How large can virtual machine snapshots grow?



Posted by: Eric Siebert
Eric Siebert, VirtualCenter, VMware ESX

On a recent VMTN roundtable podcast the subject of how large a single snapshot can become came up, and whether or not the snapshot can exceed the size of the original virtual machine disk file. I’ve always stated that a...

December 4, 2008  7:43 PM

VMware View Composer and vCenter architecture



Posted by: Rick Vanover
Desktop virtualization, Rick Vanover, Storage, vCenter Server, VMware Desktop Infrastructure, VMware View, Windows Computing

With the recent release of VMware View, one of the hottest components of the desktop virtualization component is the linked clone technology. In planning how VMware View works, it is important to understand the critical component - VMware View Composer. VMware View Composer is simply a Windows...


December 2, 2008  6:23 PM

VMware product name changes: vCenter, View



Posted by: Eric Siebert
Eric Siebert, VirtualCenter, VMFS, VMware, VMware Converter, VMware Desktop Infrastructure, VMware ESX

VMware has just announced that they are changing the names of their current products to the new product names that were announced at VMworld. The biggest changes are that VirtualCenter is now being referred to as vCenter Server and Virtual Desktop Infrastructure (VDI) is now being referred to as...


December 1, 2008  7:22 PM

Understanding VMware ESX security zones



Posted by: Texiwill
Edward L. Haletky, VI3, Virtual machine security, Virtualization, Virtualization security, VMware

There is confusion around VMware ESX with regards to security zones. On one hand VMware ESX is a single multi-homed physical machine. On the other hand, it contains multiple security zones. We need to look within the physical to properly understand security zones within VMware ESX and...


November 26, 2008  4:24 PM

Quick performance enhancement for VMware Converter P2V conversions



Posted by: Rick Vanover
P2V migrations, Rick Vanover, VMware Converter

During a recent VMware Converter-based physical-to-virtual (P2V) conversion, I made an observation and subsequent change that enhanced the performance of the conversion. During the conversion, the locally installed antivirus application became extremely CPU-hungry while VMware Converter was...


November 25, 2008  4:29 PM

CompareMyVM website to offer VMware ESX virtual machine configuration comparisons



Posted by: Rick Vanover
Chargeback and virtualization, Rick Vanover, VMware ESX, VMware ESX 3.5, VMware ESXi

Virtual machine provisioning sometimes requires administrator guesswork which doesn't always yield the best results. To help address this need, Portsmouth, N.H.-based


November 20, 2008  9:00 PM

Handy VMware guest compatibility documentation



Posted by: Rick Vanover
Rick Vanover, Virtual machine security, Virtualization, VMware, VMware ESX, VMWare Server 2.0, VMware Workstation

The planning steps are incredibly important for a successful configuration of any VMware implementation, regardless of shape and size. One specific area you should consider while planning is supported guest operating system configuration limitations. VMware frequently updates the


November 20, 2008  8:41 PM

Antivirus software on the VMware ESX Service Console?



Posted by: Eric Siebert
Eric Siebert, Virtual machine security, Virtualization security, VMware ESX, VMware ESX 3.5

This question is often asked, should I install antivirus (AV) software on the VMware ESX Service Console? If you ask VMware and many seasoned ESX Administrators the answer is usually no. According to VMware’s Security Hardening...

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November 17, 2008  6:31 PM

Security outside the box



Posted by: Texiwill
Edward L. Haletky, Security, VI3, Virtual machine security, Virtualization, Virtualization security, VMware, VMware ESX, VMware ESX 3.5, VMware ESXi, VMware scripting

Virtualization security depends on more than securing the virtualization host and hypervisor. It depends on everything that touches your virtualization host, directly or indirectly, also being secure. Let us take a quick look at the daily operations you may perform within your virtual...


November 17, 2008  5:22 PM

VMFS volume names: UUID and symbolic



Posted by: Eric Siebert
Eric Siebert, VirtualCenter, VMFS, VMware, VMware ESX, VMware ESXi

If you have ever done a directory listing of your VMFS volumes on a VMware ESX host from the Service Console or using a file browser application like WinSCP you will notice the names of your VMFS volumes but also a number of directories that consist of a long string of numbers and letters as seen...


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