Just a few quick questions on running a full secure node on a VPS:

How much storage is needed to store the full blockchain locally over time ?
From the whitepaper I got there is a 2MB block every 2.5min, which translates to an added 33,75 GB (2MB*(60/2.5)*24*30) of local storage each month or 405GB per year.
Correct ?

Can multiple VPS share one locally stored blockchain, through an iSCI LUN for instance or from storage on a host running multiple VM's ?

Thanks for your thoughts.