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Release: Microsoft Hyper-V Server 2008 R2 Beta

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Microsoft Hyper-V Server 2008 R2 Beta is the beta release of the stand-alone hypervisor based product Microsoft Hyper-V Server 2008, first released in September 2008.

The new Beta contains the same virtualization feature-set as Hyper-V that is part of Windows Server 2008 R2 Beta.  Microsoft Hyper-V Server 2008 R2 can be downloaded here and now includes:

  • Processor and memory support: Microsoft Hyper-V Server 2008 R2 Beta now supports up to 8-socket physical systems and provides support for up to 32-cores.  In addition, Microsoft Hyper-V Server 2008 R2 Beta supports up to 1TB of RAM on a physical system.

  • Updated Hyper-V Configuration Utility: The Hyper-V Configuration utility is designed to simplify the most common initial configuration tasks.  It helps you configure the initial configuration settings without having to type long command-line strings.  New configuration options have been added for R2 Beta including:

    • Remote Management Configuration

    • Failover Clustering Configuration

    • Additional options for Updates

  • Failover Clustering: The initial release of Microsoft Hyper-V Server 2008 did not include support for failover clustering.  However, with Microsoft Hyper-V Server 2008 R2 Beta, host clustering technology is included to enable support for unplanned downtime.
  • Live migration: Microsoft Hyper-V Server 2008 R2 includes support for live migration. Live migration enables customers to move running applications between servers without service interruptions.

With live migration and failover clustering, customers receive high availability and dynamic migration capabilities for both planned and unplanned downtime.

AMD / Red Hat Pull Off A Live Migration of VMs Across Vendor Platforms

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AMD, in collaboration with Red Hat, today demonstrated for the first time “live migration” of a virtual machine across vendor platforms. Live migration enables the movement of running virtual machines (VMs) from one physical server to another without disrupting service to the end user, something that, till now, has only been demonstrated across systems based on one vendor’s platforms. Today’s live migration demonstration moves a live VM from an dual socket Intel Xeon DP Quad Core E5420-based system to a system based on the forthcoming 45nm Quad-Core AMD Opteron processor, utilizing Red Hat’s high-performance open source virtualization software. See the demonstration on the AMD Unprocessed YouTube Channel or here.

Update: also, read the blog post from Margaret Lewis (Product Marketing Director at AMD) on the announcement.

Industry interest in live migration has grown as virtualization technology has become more widely adopted. Live Migration of VMs across physical servers is a vital component of data center management that enables IT managers to move VMs as necessary in order to perform tasks such as upgrading or conducting maintenance of a server, balancing the server load and proactively managing the server availability to avoid downtime or lost data. The demonstration illustrates AMD’s approach to an open and collaborative relationship with its partners to meet customer demands.

Microsoft Announcements: Hyper-V Server To Compete With ESXi, Windows Server 2008 R2 Will Sport Live Migration Feature

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Microsoft is doing a big virtualization splash today with their much-hyped ‘Get Virtual Now’ event in Washington. The Hyper-V 1.0 hypervisor was officially released, but that wasn’t much of a surprise, unlike the launch of a new version (free of charge) dubbed Hyper-V Server 2008. It’s a standalone server virtualization tool that enables firms to consolidate Windows and Linux workloads onto a single physical server.

You guessed it: it’s direct competition to VMware ESXi, and it’s going to make waves. The new product will be supported by the upcoming System Center Virtual Machine Manager 2008, to be released within 30 days as well.

Another surprise: the next version of Hyper-V which will be included with Windows Server 2008 R2, will have a live migration feature, something Microsoft was often criticized for because it lacked it. According to Mary Jo Foley, the release is slated for 2010.

Microsoft

Hyper-V Quick Migration Breaks Network Connections, Says VMware

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Check out the following demo by Blip.tv account ‘VMware TV‘, expressing the difference between moving a VM from one physical server to another with downtime (Hyper-V Quick Migration) and VMware’s Vmotion, which offers zero downtime when transferring virtual machines.

Keith Ward over at Virtualization Review picked up the demo and writes about what happens in the video:

“The demo shows a Quick Migration of a Windows Server 2003 VM from one physical machine to another. At the same time, a Microsoft Dynamics client is trying to access a database residing on the VM. Through a constant ping of the VM, we can see how a) the connection to the VM is dropped for a time, and b) how the Dynamics client fails in its attempt to get the database information (an error box pops up, showing a TCP failure). Shortly thereafter, another popup informs us that the VM has actually been deleted. It’s re-started a few moments later.”

To be balanced, here’s what ‘Jeff’ recently posted on the Windows Virtualization Team blog:

After my last blog I received almost two dozen email telling me that VMotion was far superior for unplanned host downtime and that it was a much better HA solution because it could live migrate virtual machines. I’ve heard this fallacy espoused for many years and, folks, this simply isn’t the case.

In the case of unplanned downtime, VMotion can’t live migrate because there is no warning. Instead you must have VMware HA configured and the best it can do is restart the affected virtual machines on other nodes which is the same as what is provided with Windows Server 2008 Hyper-V and Failover Clustering.

Here are a couple of quotes from VMware’s own document, Automating High Availability (HA) Services with VMware HA.

Page 1 paragraph 2 states:

Using VMware HA, virtual machines are automatically restarted in the event of hardware failure…

Page 8 states:

How does VMware HA work?

VMware HA continuously monitors all ESX Server hosts in a cluster and detects failures. An agent placed on each host maintains a “heartbeat” with the other hosts in the cluster and loss of a heartbeat with the other hosts in the cluster and loss of a heartbeat initiates the process of restarting all affected virtual machines on other hosts.

HA monitors whether sufficient resources are available in the cluster at all times in order to be able to restart virtual machines on different physical host machines in the event of host failure.

The point being VMware HA and Hyper-V with failover clustering accomplish the same thing: virtual machines are RESTARTED on another node. No better, no worse. If you still don’t believe me, find one of your ESX Servers and go pull out the power plug. (Just don’t say I didn’t warn you.)

So what do you think about all this?

Live Virtual Machine Migration Vulnerability

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Anthony Liguori has a good summary of the Blackhat paper by Jon Oberheide, Evan Cooke and Farnam Jahanian of the University of Michigan about Xensploit .

Black Hat Logo

The idea of Xensploit is to use a Man in the Middle attack between 2 hosts performing a Live migration. The fundamental flaw is that by default Live migration of virtual machines is unencrypted or often even unauthenticated. Of course good network security practice isolates this kind of traffic in it’s own VLAN, but it shows that security is becoming a bigger issue day by day.

The vulnerability seems to be present with VMWare and Xen versions prior to 3.1 but according to Anthony not with KVM.