vSphere Hosts - Max 'Open Virtual Disk Capacity'

If you are run "GIANT" VM's within your virtualization environment,
this article by @jasonboche is a great read - I began writing my own
but this is an excellent article - Thanks Jason!


http://www.boche.net/blog/index.php/2012/09/12/monster-vms-esxi-heap-size-trouble-in-storage-paradise/
 
In Summary:
 
vSphere hosts have a statically assigned "heap size" that
creates a theoretical maximum of 8TB of 'open virtual disk capacity' per host.
 
This is easily changable by heading to Advanced Settings (Softwre) under Host configuration in vCenter (Range = 16MB-256MB which can push 'open virtual disk capacity' up to 25TB).