Set default location for snapshot to local esxi

Hello friends,

We have a 3 node esxi 5.1 cluster & iSCSI storage. All the vm's are currently running on storage.

I want to change set the default loation of snapshot created for vm's on esxi local host. not on the iSCSI storage.

have gone through KB 2007563  but want other safe options. since it's a production environment i don't want to take chance.

plz help me out in config

Thanks in advnace

Sharath