I have succesfully installed the system with 1CPU (2Cores) and 1GB RAM on ESXi 5.1.0 (1117900).
The server has the following hardware.
Supermicro X8SIL-F
16GB ECC RAM
2x Western Digital RED 3TB
1x Samsung HD204UI 2TB
ESXi running from USB-Stick 8GB
APC UPS CS-350 connected to DSM
Volume1 configured as RAID5 with 745GB on each HDD.
Volume2 configured as RAID1 with 2TB on WD REDs.
The system runs now for about two weeks without any problems, but i'm actually on testing some packages like mediacenter.
In the next time i want to test iscsi access from am windows8-vm.
And i would like to say 'thanks' to the developer and hope for an update to the latest version:-)