Live Migration

Multi-Site Live Migration Clustering Whitepaper By HP

February 18, 2010 // 0 Comments

I just saw a tweet by one of the Microsoft virtualisation feeds, announcing that HP had released a white paper on how to do Hyper-V Live Migration/clustering across multiple sites using the HP StorageWorks Cluster Extension. “This paper briefly touches upon the Hyper-V and Cluster Extension (CLX) [...]

Hyper-V Live Migration and Linux VM’s

January 25, 2010 // 1 Comment

Let’s get this out of the way quickly.  Yes, you can run Linux virtual machines on a Hyper-V cluster and you can Live Migrate them.  I have SUSE Enterprise Linux 10 SP1 VM’s running on our cluster.  I can live migrate them from one host to another and not lose a ping packet [...]

Live Migrations Are Serial, Not Concurrent

November 30, 2009 // 0 Comments

Normally when you move 2 VM’s from one host to another using Live Migration they move one at a time.  Yes, the VMM job pauses at 50% for the second machine for a while – that’s because it hasn’t started to replicate memory yet.  The live migrations are serial, not [...]

How Well Does Live Migration Perform?

November 30, 2009 // 0 Comments

Excellently.  But why believe me?  I’ve just added a node to our cluster and moved a VM throughout the infrastructure in every combination I could think of, from host A to B, from B to A, from A to C, from C to A, from B to C … you get the idea. While I was going this I was RDP’d [...]

Adding a Node To A VMM Managed Hyper-V Cluster

November 30, 2009 // 0 Comments

I’ve just gone through this process so I thought I’d document what I did: Have a test VM ready and running on the cluster.  You’ll be moving it around to/from the new node. Don’t use a production machine in case something doesn’t work. Built the new node.  Set up hardware, [...]

How W2008 R2 Live Migration Works

November 29, 2009 // 1 Comment

Let’s recap the different types of migration that we can get with Windows Server Hyper-V and System Center Virtual Machine Manager: Quick Migration: Leveraging Windows Failover Clustering, a VM is treated as a clustered resource.  To quick migrate, the running state is saved to disk [...]