When more than one host, either physical or virtual, boots from the same shared physical disk or LUN, they cannot use the same scratch partition.

The host stops at bootup when sharing a boot disk with another host.

More than one ESXi host can share the same physical disk or LUN. When two such hosts also have the same scratch partition configured, either of the hosts can fail at bootup.


Set the hosts to boot sequentially, and boot the hosts.

This setting lets you start the hosts so that you can change the scratch partition for one of them.


Use the vSphere Client to connect to one of the hosts.


Select the host in the Inventory.


In the Configuration tab, select Software.


Select Advanced Settings.


Select ScratchConfig.

The field ScratchConfig.CurrentScratchLocation shows the current location of the scratch partition.


In the field ScratchConfig.ConfiguredScratchLocation, enter a directory path that is unique for this host.


Reboot the host for the changes to take effect.