If you're doing this, make sure to leverage the snapshot tool in VMWare.
I've run into an issue in the past where I've had some database corruption when I expanded the disk space. It could have just been my VM host, but I've chosen since then to follow this path:
1. Create VM instance with as much allocated space as possible.
2. When I get additional resources, first step should be to pull backups from AirWave
3. Then add the new resources
4. Delete current instance, and then create new instance with the increased resource capacity
5. Fresh install (same version that was running on previous instance)
6. Restore backup
It's a longer method, but since I started following these steps, I haven't run into any database corruption.