Category Archives: ESX Migrate/Upgrade

Downgrading ESX virtual hardware 7 to 4

By | November 19, 2010

When you upgrade your vSphere environment you normally also upgrade the VM’s virtual hardware to version 7, to take advantage of the new features. This is pretty normal procedure for all VMware admins. But in some very very rare cases you might need to move a VM upgraded to hardware version 7, to a host… Read More »

Upgrading Windows 2008 from virtual HW 4 to 7 may cause problems

By | November 23, 2009

Just found this very interesting article describing a problem with Windows 2008 and ESX 4 virtual hardware version 7. In short the article states that you might have the disks go offline in a Windows 2008 VM if you Upgrade virtual hardware from version 4 to 7 Installing a new VM with virtual hardware… Read More »

Offline upgrade from ESX 3.x to vSphere (ESX 4.x)

By | June 8, 2009

If you want to perform an offline upgrade of an ESX 3.x host to the new vSphere  host there are a few ways. Using a DVD: /root/ storage1 Using the DVD ISO: -i /vmfs/volumes/storage1/esx4.iso /vmfs/volumes/storage1 storage1 – should be a VMDK local datastore attached to the host. storage1 – should be at least 8.4GB… Read More »

Troubleshooting VMware snapshots

By | May 21, 2008

Eric Siebert has writen a very good and explaining guide on how to troubleshoot snapshots on ESX 3.x. Virtualization administrators can use snapshots on VMware ESX to travel back in time and figure out what went wrong with their virtual machines (VMs). But what do you do when your snapshots start acting funny? In this… Read More »