could not power on VM: No space left on device. Failed to power on VM

[woodsp]

I am trying to start a guest O/S on an ESX 3.5.0 host, but am getting the following failure;

could not power on VM: No space left on device. Failed to power on VM

Can anyone point me in the direction of why this may be occurring.

Info. that may help;

have replicated volume from one SAN to partner SAN, and it was promoted to a volume. Added the VM to the inventory, turned off connect to network at startup.

Then on trying to power on, the failed message is displayed

[AndreTheGiant]

Check the datastore free space (a good practice is leave at least 10-20% of free space).

To power-on a VM you need free space for the swap file (his size is = vRAM - reserved RAM).

Andre

[krowczynski]

You shold alway left space on an Datore (LUN)

Alos check if there are any old Snapshots on this datastore.

[woodsp]

Hi,

thanks for the reply, free space looks OK.

[woodsp]

Hi,

Have deleted all snapshots that are not required, in this instance that was all one of them. Still cant start the VM.

Thanks for the suggestion anyway

[AndreTheGiant · Accepted solution]

thanks for the reply, free space looks OK.

Are you sure?

Use this command (from ESX CLI):

vdf -h

How much vRAM do you have assigned to your VM?

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I see from the second post that you have resolved. Fine!