Storage Informer
Storage Informer

Configuring VMware* ESX Server’s VMotion*

by on Jul.15, 2009, under Storage

Configuring VMware* ESX Server’s VMotion*

VMotion used in ESX Server is the basic building block to use many of the advanced features in virtualization. VMotion allows you to move your VMs from one physical server to another with no end user impact. It・s the basis for Live Migration, Load Balancing, Fail recovery, and even Fault Tolerance.

To get started with VMotion, you will need a shared storage that both of the servers (considering that・s you・re only using 2 servers for your cluster) can access. A simple shared storage can be created on your client machine called an NFS Share (instructions in a previous blog). I・ll be using the ESX Server 4.0 & the new vSphere in this blog.

1. When you first login into the vCenter through vSphere, you・ll create a new datacenter and choose to create a New Cluster.

2. Give the cluster a name and click Next. Once you get to the VMware EVC page, you can choose to enable :Enhanced VMotion Compatibility; for Intel hosts & choose the Intel Xeon 45nm Core 2, which allows you to utilize Intel・s FlexMigration and move VMs from one platform to another. In this case, from the old Penryn generation to the new Nehalem platforms. Continue to click Next with default options until you・re finished creating the cluster.

3. Add your hosts (servers) to the cluster.

4. Under Configuration –> Networking for each of the servers, select Properties for the vSwitch0 and add a new VMkernel
a. Click Next, and check the box for Use this Port group for VMotion
b. On the next page, choose your IP (either DHCP or static) and click to finish

If you have already added the VMKernel, you can edit the properties of the existing VMKernel to be used for VMotion. Now you can right-click on your VM and select Migrate to move one VM from one system to the other system.

If you have workloads running on the VMs, be sure to put the VMKernel for VMotion on a separate NIC(vSwitch).


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