Following an issue with the storage used by our Hyper-V cluster, one node in our five node cluster became partially unresponsive. The virtual machines (VMs) running on the unresponsive node were automatically moved to other cluster nodes and service was resumed withing a couple of minutes. At first everything appeared to be fine, but within [...]
An important point when deleting a Hyper-V snapshot is that the corresponding AVHD file isn’t merged into the main VHD file until you power down the server. This means that the disk space used by the snapshot isn’t immediately available when you delete a snapshot. As far as I’m aware there’s no way to monitor the [...]
PXE boot is not available in Hyper-V 2008 R2 when using a Synthetic Network Adapter. In order to PXE boot a virtual machine (VM), you need to turn off the VM and add a Legacy Network Adapter. If the VM is an existing machine with a bootable hard disk, you’ll also need to change the [...]
Dynamically expanding disks enable you to thin provision virtual machines (VMs) storage. This means you can pack more VMs onto a given amount of disk, but you need to ensure that if you provision more storage than is physically available, you don’t run out of space on the host. The PowerShell script below produces a csv file [...]
If you’re using System Center Virtual Machine Manger 2008 R2 (SCVMM) and need a list of virtual machines with checkpoints, you can do this with a simple PowerShell command. From within the SCVMM console click on the PowerShell icon (see below) and run the command: Get-VMCheckPoint . Further information about the Get-VMCheckPoint command is available by running: Get-help Get-VMCheckPoint
Following an issue with our five node Server 2008 R2 Hyper-V cluster I was left with two entries for one virtual machine (VM) in System Center Virtual Machine Manager 2008 R2 (SCVMM). One entry listed the VM as running, the other as failed, despite the fact that there was nothing wrong with the VM. I was unable to [...]
