vSphere 4 – Increase a VMs Hard disk under Windows 2008
Here’s how I recently changed the C: boot drive on a Windows 2008 VM
One of our older Windows 2008 templates has a 40GB C:\ hard disk, however I’d like it to be 50GB.
With the combination of vCenter Server 4, Windows 2008 and vSphere 4 this couldn’t be easier!
- Have admin access to vCenter Server and the Windows server
- A quick snapshot is always a good idea
- While the server is still ON, yes I said “While the server is still on”, in vCenter Server right click on the VM
Choose Edit Settings, Choose the Hard disk you want to expand and type in the new size, Choose OK
- In Windows 2008 server open Server Manager, Click on Storage, Click on Disk Manager
- Note the extra space on your hard disk
- Right Click on the C: drive and choose Extend Volume
- Choose Next on the Welcome Screen
- Type in the amount you want to extend by or just click next the max
Click Finish to start the expansion, in about 2 seconds you’re done…
3 thoughts on “vSphere 4 – Increase a VMs Hard disk under Windows 2008”
April 8, 2011 at 9:41 pm
Does this work in ESXi?
April 8, 2011 at 9:46 pm
Yes, it does work in ESXi. But I did have to do a refresh of the drives before the extra space showed up and the option to Extend was enabled.
April 12, 2011 at 3:49 am
Hey David – Yes this should work on ESXi. This is a function of vCenter Server less about ESX.