Hyper-V

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Even GPL can’t make Hyper-V Linux VMs well

Even with the recent move of offering open source (GPL2) Linux integration components (drivers), Linux guests fall quite short of being first-class virtual citizens on Hyper-V.

Hyper-V deployments suddenly drop to zero

Microsoft Virtualization was counting Hyper-V downloads -- requried for every Windows Server 2008 system -- and using that metric to imply Hyper-V adoption.

Choose any two: Hyper-V, HA, Linux

It is very difficult to cleanly shut down a Linux VM on Hyper-V if it is configured for HA. This is because there is no orderly guest shutdown feature in the integration components.

Exclusive: Hyper-V 2013 Product Roadmap

Now that Windows Server 2008 R2 with Hyper-V has released… What’s that? It has not yet released? Sorry about that, I was confused for a moment — all of the key features of Hyper-V that Microsoft Virtualization team has been talking about for months are actually in the R2 product, which is currently just at […]

Lighten Up

Fear, Uncertainty, Doubt — FUD.  The expression may have started with the mainframe generation, but these days most technology pros associate the term with Microsoft tactics.  That’s why I find it more than a little humorous to see the Microsoft Virtualization Team using it on their blog right now in an attempt to defend Hyper-V’s […]

The Million Hypervisor March

Hyper-V is often downloaded to Windows Server systems that will never be used to run virtual machines. Making this an irrelevant metric for Hyper-V installed base figures.

Hyper-V snapshots: not for production

One of the greatest things about virtual machines is the ability to take snapshots, which can be used to quickly roll a VM back to a known state. Previously, I have written about some of the shortcomings with Microsoft’s Hyper-V snapshots.  Or were they checkpoints?  I forget… but that’s not important.  The main problem with […]

Hyper-V Linux integration components no longer Connected

I have given some coverage recently to Linux guest operating system support on Hyper-V, especially the incredible announcement last month of mouse support for Linux guests! Just when you thought it could not get any better, the Microsoft Virtualization gang surprised us again this month.  No, it’s still not orderly guest shutdown support, or OS […]

Nice Windows VM you’ve got there…

The SVVP identifies VMware ESX releases that are supported by Microsoft. Customers are sometimes turned away unnecessarily due to lack of awareness.

Would you buy a hypervisor from these guys?

Recently, Microsoft published a questionable video dispelling numerous VMware myths.  The only problem, at least for Microsoft, is that they really didn’t do a very convincing job.  In fact, the video is so sorry that I don’t mind promoting it here on VCritical — check it out! Mythbusters Busted Gabe’s Virtual World has an excellent […]

Of Mice and Xen

The Citrix/Microsoft partnership continues to bear fruit.  Just yesterday they announced an awesome new capability for Linux virtual machines running on Hyper-V.  Have you heard? No, it’s not P2V and it’s not guest customization.  No, it’s not orderly guest shutdown.  It’s not time sync either. You must have seen it — the news is everywhere!  […]

Hypervisor Benchmarking Quiz

Question When is it okay to disregard the EULA clause on publishing hypervisor performance benchmarks? Answer Never.

SCVMM Damage Control

Yesterday I wrote a summary of the hazards of using SCVMM to manage VI3 — highlighting previously published VCritical articles as well as linking to a new series of videos on Why Choose VMware.  Looks like VMware may have hit a nerve, as the Microsoft virtualization team scrambled to issue a barrage of rebuttals. My […]

Managing VI3 with SCVMM considered harmful

Features found in VMware ESX are unnecessarily neutered when attempting to manage by using System Center Virtual Machine Manager 2008.

The Parent Partition is dead!

Long live the Management Operating System! In an effort to clarify the overly complex concept of “parent partition,” Microsoft changed the terminology before things really got out of hand.  Surely you’ve heard the one about the Hyper-V administrator that called into Microsoft product support asking why he had to give a portion of his new […]

Hyper-V Linux Smokescreen

Hyper-V Linux guests (SUSE) do not yet have integration components or customization capabilities. Nor can you P2V a Linux system to Hyper-V.

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 […]

Yes, NIC teaming is not unsupported

Unlike Hyper-V, VMware ESX ships with complete network interface (NIC) teaming capabilities, a critical feature for hypervisors.

Which guest operating systems can be customized by SCVMM?

Although SLES 10 is supposedly supported by SCVMM 2008, administrators must look elsewhere for a Linux guest customization solution.

Using SCVMM to attach ISO images to VMware ESX VMs

By design, System Center Virtual Machine Manager copies ISO CD/DVD images to managed hosts instead of sharing. For VMware ESX it uses SFTP. For ESXi, it fails.

IGT Part 5: Hyper-V snapshots are not gone until the VM is powered off

Unlike VMware ESX, when administrators delete snapshots on Hyper-V, the disks are not merged until the VM is powered off -- potentially filling up disks.

VM Resource Management: Hyper-V versus SCVMM

Users that wish to implement Hyper-V CPU reservations and limits are forced to open another tool, Hyper-V Manager, instead of configure these with SCVMM.

Half the VM reboots on Patch Tuesday

Virtual machine snapshots are a quick way to recover from unexpected incompatibilities you may encounter when patching guest operating systems.  In fact, VMware Update Manager even provides an option to automatically snapshot a VM before applying updates and then delete the snapshot after a specified amount of time. Even if you are not using VMware […]

Snapshots that shoot back

Although the Hyper-V Manager and SCVMM allow removing snapshots from running VMs, they are not actually merged until the VM is powered off.

IGT Part 4: Failover frustration

This article is part of a series on Incoming Google Traffic (IGT). Want to know what happens if your virtualization platform uses native OS clustering technologies to provide highly-available virtual machines?  You become an unwitting cluster administrator.  I’m referring to MSCS-style clustering, now known as Failover Clustering.  You know, one VM per LUN stuff. Take […]

Let them eat cake!

When managing a virtual environment, there are two layers of patching that need to be considered.  Guest operating systems and applications inside the virtual machines need regular updates — patch Tuesday for Windows.  And the hypervisor platforms themselves, like any other software, also need to be patched. What happens to the virtual machines when the […]

Checkshots or Snappoints?

Stop me if you’ve heard this one: What’s the difference between a checkpoint and a snapshot?

IGT Part 1: Mojave Only Need Apply

This article is the first in a series on Incoming Google Traffic (IGT). When I saw this one, I immediately recognized what the frustrated web searcher was seeking: “hyper-v” manage from windows xp Looks like a new Hyper-V user that is not all in with Microsoft.  Time for an upgrade.  You see, besides being available […]

Hyper-V Server Hyperbole

Initially, Hyper-V Server was sort of a mystery.  Some kind of “bare metal hypervisor” that “is not Windows” sounded peculiar.  Details were scarce.  Some thought it would be like ESXi, a small-footprint design that can be embedded in a server via flash memory.  As you know, it turned out to be nothing more than Windows […]

What would things be like without VMFS?

If you have been using VMware ESX, then you might be a little spoiled by VMFS, VMware’s clustered filesystem. I have a hunch that many of us just take it for granted: create large LUNs, add to multiple ESX servers, create your virtual machines and be done with it. And, oh, migrate the VMs around […]

When does your “free” Hyper-V Server cost $1304?

Microsoft Hyper-V Server is finally out.  We sure heard a lot about the new Windows-less hypervisor this year and how it was definitely not Windows.  Well, that turned out to be a bunch of marketing spin.  Not only is it just Windows, it even requires you to install some Internet Explorer security patches.  Huh? It […]

Hey boss, where do you want these virtual machines?

There are quite a few articles these days comparing VMware virtualization with Microsoft Hyper-V, which is to be expected since the press knows this topic is in the foreground for many IT managers right now. A typical, albeit incorrect, comparison goes something like this: Both products are bare metal hypervisors VMware has lots of great […]

How to see if Quick Migration is right for your workload

I saw humor in this article comparing VMware VMotion with Microsoft Quick Migration: So, the best thing to do is to test the applications that will eventually run in virtual servers with Quick Migration and see what happens. Then, in a physical server with the installed application, run it and use it to perform an […]

iSCSI configuration: VMware ESXi vs. Microsoft Hyper-V

Now that Microsoft has released the much-hyped Hyper-V Server, it’s a good time to take a look at the steps you would need to go through to configure iSCSI LUNs. As you can see in this video, it is incredibly complex.  ESXi, on the other hand, walks you through without a lot of fuss.  VMware […]

VMware ESXi and Hyper-V installation comparison

I took a look at the Hyper-V installation process to see how it compares with ESXi and decided to install it on Server Core, since that has been touted by Microsoft as the preferred and recommended way of deploying Hyper-V.  Well, after significant research and learning, I was able to distill the process down to […]

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