Virtualization Roundtable Podcast from VMTN

Posted on May 24th, 2008 in SAN, appliance, blogs, feature comparison, vmware by Rich

John Troyer from VMTN has hosted the first podcast episode of VMware Communities Roundtable and has posted a summary of the call notes at VMware Communities Roundtable podcast #1 | VMTN Blog. I am honored to have one of my “things that make you go hmmmm” (on the Quick Migration vs VMotion discussion) posts listed as a reference for one of the topics of the episode.

John announces the new series and the objective of the Roundtable podcasts with the following summary:

“Each week, we’ll bring together experts and leaders from the VMware Communities and virtualization blogs to discuss the interesting topics in virtualization. Think of this as if it were a group meeting up at VMworld over a pint to chat about the latest news.”

The episode lasts somewhere between 50 minutes to an hour and is a recorded call between John and an attendee list consisting of some of the virtualization community’s top minds from all over the world. VMware Community profiles of the individuals contributing to episode 1 are:

Go to John’s VMTN post to listen or download the podcast, but the following is my quick summary and take-aways from the call.

ZDNet comparison of VirtualBox and VMware Server 2.0

Posted on May 23rd, 2008 in blogs, feature comparison, virtualbox, vmware server, workstation by Rich

Jason Perlow of blogs.zdnet.com has written a great feature comparison post of the 2 best multi-platform, free virtualization products in my opinion - Sun xVM VirtualBox 1.6 and VMware Server 2.0 Beta 2.

Personally, I used to run VMware Server 1.x on my XP notebook until I was tempted to try VMware’s first beta of version 2.0. Although not an officially supported OS for any version of VMware Server, my use of Server on XP was for basic research and test purposes, and I chose the free version over VMware Workstation. Like most, after the switch to 2.0 beta 1 I experienced frustration with the web interface. Now, since I discovered Sun’s xVM VirtualBox 1.6 seamless feature and the ability to run virtual machines created in VMware’s .vmdk format, I have switched. I am extremely happy with VirtualBox, and I even consider it to be a closer open-source replacement for VMware Workstation with features that rival the still in beta version of Workstation 6.5. I also use VirtualBox 1.6 on both 64 bit and 32 bit Ubuntu at home.

Jason’s comparison focuses on using the products in a true virtualization host capacity, and he provides some interesting performance analysis.

Citrix XenServer Versions

Posted on May 13th, 2008 in XenServer, citrix, dell, feature comparison by Rich

Last week’s post about Dell’s embedded hypervisor options and the Help Me Choose: Hypervisor page sparked some reader discussion about whether XenServer can be used with shared storage. The answer to that question is that it depends on which version of XenServer you order. Dell is offering either XenServer Express or XenServer Enterprise versions as embedded options. Express is a limited version and can not use shared storage while Enterprise is fully featured and capable of using a SAN.

Citrix also offers a XenServer Standard edition, but apparently that version is not an option as an embedded hypervisor when ordering Dell hardware.

updated 05.17.08 - image updated to reflect changes to Citrix’s product comparison page after this post was publihsed and to show the 4 versions of XenServer. The table below has not been updated and does not show the Premium Edition. Click on the image for a larger version.

The image in this post and the following table were copied from the Citrix XenServer v4 web page. They offer a quick overview of the differences between the 3 versions.

Help Me Choose a Hypervisor

Posted on May 9th, 2008 in XenServer, citrix, dell, esx 3i, esx3.5, feature comparison, hyper-v, microsoft by Rich

Dell embedded virtualization offeringsI was researching Dell’s latest announcement, Dell Unveils Virtualization Blockbuster – From Servers and Storage to Software and Services and trying to find definitive proof of the $99 price for embedded ESXi or the $299 price for embedded Citrix XenServer Express as reported by virtualization.info. Although I did not find the pricing in the announcement, I was able to find it by going through the process of using the Dell Online Store to build a R805 server. By clicking the green “customize it” button I was eventually able to see the Optional Virtualization Offerings section with the pricing for the embedded hypervisors. See the screenshot to the right. (click for larger view)What surprised me during this process was the “Help me Choose” link in this section. Clicking that link took me to a Help Me Choose: Hypervisor page from Dell that is basically accurate and helpful for comparing high level features of ESX 3.5, ESXi, Citrix XenServer and Microsoft Hyper-V.

Here is a screenshot of the comparison table from Dell’s page.

VirtualBox: opensource alternative to VMware Workstation 6.5

Posted on April 17th, 2008 in feature comparison, virtualbox, workstation by Rich

Innotek VirtualBox is a free, open-source alternative to VMware workstation. Aquired by Sun Microsystems earlier this year, VirtualBox has quickly become one of the leading developer platforms for the desktop with current features that rival even VMware’s latest version 6.5 currently in beta testing. I have used VirtualBox in the past, but because I had not used it in over almost over a year I was not aware of the latest features in the most recent releases. The feature that specifically caught my attention was the seamless window integration of Microsoft Windows virtual machines. Like VMware Workstation and Fusion’s Unity feature, VirtualBox allows Windows applications in the VM to pop out of the VM session making it available from the host operating system’s desktop.

Quoting from Sun’s announcement:

VCB in a Virtual Machine and other product enhancements

Posted on March 27th, 2008 in blogs, dr, esx3.5, feature comparison, vcb, vi3, vmetc.com by Rich

When I was linking to RTFM Education from my post Combining multiple VMware .lic files is a thing of the past I noticed Mike wrote a quick post about discovering the new LAN based backup features of VCB. I had to get my own copy of the VMware Consolidated Backup Improvements in Version 3.5 .pdf and understand the new LAN-based backup feature. In short, the requirement for a storage area network, and therefore the installation of VCB on a physical server with HBA(s) has been removed. Installing VCB on a Windows 2003 virtual machine is now possible. Maybe not recommended for larger environments, but possible and a achievable design for smaller infrastructures.

The .pdf also reveals that there are several other new features of VCB that were previously restrictions of the older versions.

XenServer integrates everRun VM for HA features

Posted on March 25th, 2008 in XenServer, XenSource, availability, citrix, dr, fail over, feature comparison, replication, vmetc.com, vmworld by Rich

everRun VM diagramCompared to VMware ESX Enterprise Edition, business continuity and high availability features are lacking when deploying Citrix XenServer “out of the box.” Specifically, XenServer does not have the built in equivalent to VI3’s HA feature. Also missing is a solution similar to VMware’s soon to be released Site Recovery Manager (SRM). However, Marathon Technologies and XenSource (now a division of Citrix) have worked together to develop everRun VM as a enterprise class answer to fault tolerant availability for Windows virtual machines hosted on Citrix XenServer. According to Marathon’s Director of Products, Michael Bilancieri, at a recent Atlanta “Virtualization for the Real World” event, the integrated solution will be generally available sometime in the 2008 Q2/Q3 time frame.

Quoting from the Best of VMworld (more on this award later in this post) white paper downloadable from the everRun link above:

Is Citrix XenServer cheaper than VMware ESX Server?

Posted on February 26th, 2008 in XenServer, blogs, esx, esx3.5, feature comparison, vmetc.com by Rich

A Few Thoughts on Xen posted on blog.scottlowe.org got me thinking about the pricing differences between Citrix XenServer and VMware ESX Server. It is a general assumption that Xen Server is more affordable than ESX. I decided to figure out exactly what the products cost and how they compare to each other. I am not factoring in the cost of Sales and Support in this post because I would want that regardless of which vendor I choose.

I found Citrix XenServer list pricing from a Citrix presentation slide deck that was presented to me via a webinar several weeks ago. Click on the image to see a larger version.

Windows 2008 Posters for your cube

Posted on February 21st, 2008 in feature comparison, microsoft, news, partner, server 2008 by Rich

Looking for a visual representation of Microsoft Server 2008 and it’s various new enhancements? Go to the Microsoft.com downloads pages and download the Windows Server 2008 Component Posters. The Server 2008 poster is divided into six product scenarios. There is a virtualization scenario and a Server Core scenario.

Some info about the posters from Microsoft’s page:

These two posters, originally published in the July 2007 issue of TechNet Magazine, provide a strong visual tool to aide in the understanding of various features and components of Windows Server 2008. One poster focuses exclusively on powerful new Active Directory technologies, while the other provides a technical look at a variety of new features available in Windows Server 2008 (such as Server Core, Network Access Protection, and more).

Get the originals from the link above, or I have saved copies locally on my Files page.

Here is a screenshot of the virtualization scenario. Click the image for a larger version.

Why should I buy Workstation when Server or Player is free?

Posted on February 18th, 2008 in feature comparison, home, vmetc.com, vmware, vmware server, workstation by Rich

I am certainly not the first to talk about the differences between VMware Workstation, VMware Server and VMware Player. However, this topic of conversation continues to come up. “Why should I buy VMware Workstation when I can download Server or Player for free?” There are some key differences between the products that you should understand before you decide which is right for you.

Can you rely on live backups of Exchange and SQL VMs?

Posted on February 4th, 2008 in dr, esx, esxpress, feature comparison, microsoft, vizioncore, vmetc.com, vranger by Rich

One of the engineers from our storage team asked me to join a discussion about whether or not restoring VMs from images made by any of the live VM backup utilities would be a reliable process for a client. I unknowingly joined what was really a battle about whether the client would be better off using SAN based snapshots, host based replication, or live VM imaging specifically for Exchange and SQL VMs. All are proven solutions, and depending on budget, recovery objectives, and service level agreements all solutions could be deployed with confidence. The customer, and this post, is focused on the live VM backup solutions and their reliability for Exchange and SQL. Based on cost of implementation and infrastructure required the VM backup tools are the most affordable and easiest to deploy, but they also leave you with the most uncertainty.

Before continuing I want to point out that normal backup agents still need to be used for Exchange and SQL VMs. Not one of the VM backup solutions can perform application maintenance or specialized backups, like the Exchange Information Store backup for example. Understand that the live VM backup tools only specialize in capturing a quiescent, working image of the VM operating system and application.

First let’s understand what we mean when we say quiescent data. In the latest VMware Virtual Machine Backup Guide quiescing is defined as:

Everything Xen

Posted on January 18th, 2008 in Xen, XenServer, XenSource, citrix, feature comparison, linux by Rich

Try to see it once my way
Everything Zen
Everything Zen
I don’t think so

Bush - Everything Zen

Xen, XenSource, XenServer, and Zen. What are they? Which one do I use to virtualize my servers? What is Citrix’s product and how does it compare to VMware? These are my reasons for writing this post. Frankly, I was confused. After some intense meditation I decided to figure it out. Unfortunately, Lakers coach Phil Jackson was not available to help.

Wikipedia was where I started my journey. At first I was even more confused when I landed on the Xen (disambiguation) page:

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