Although it’s a great feature available for VMware ESX v3.5, Storage VMotion as you probably know is, at this stage, command line only.
This is fine as the ‘interactive’ mode gives easy to follow prompts. Though for ease a GUI would be preferable sometimes.
If a GUI interface to performing your Storage vMotion tasks appeals then check out this VI plug-in called SVMotion.
To be honest I haven’t had time to install and check it out yet though certainly intend to do so.
If you have, or do end up giving it a try then let me know what you think of it – I’d be interested to know.