@bearcat
1. I did a fresh install of dsm Version: 6.1.7-15284-1 then updated just once (the latest critical security patch) so it is now Version: 6.1.7-15284-3)
[Let me know if the above i did is correct before i do a fresh re-install]
2. Ok will remove the graphic card.
3. Set all your HDD's to AHCI. [I shall double check my bios on this, but I believe they are in AHCI mode as I flash a custom bios https://www.bios-mods.com/forum/Thread-HP-Proliant-Microserver-AMI-BIOS-MOD?pid=75965#pid75965 , and enable "load optimal defaults" , and disable CE1 ]
4. Yup grub file had vid,pid, S/N, and mac address configured.
5. AFP is enabled on default when i check on the NAS.
6. The default MTU value on my NAS is shown as 2000.(greyed out, unless i manually tick to change it)
For windows im unsure of the MTU, but for MAC OS X, i noticed that default mtu is 1500, i changed it to match the NAS at 2000 .
It seems that the NAS NTU, when i change the settings, it wont stick/remain. [any thoughts about this? or am I required to use cmd line to change the mtu? ]
7. For the MAC OS X connectivity issue, I found out that:
If i make a NAS direct connection to my macbook pro, if wifi is enabled, i am unable to find it the nas (whether i set dhcp or fix ip on the nas). however once i disabled my wifi, i am able to see the NAS
[regardless whether firewall and internet sharing is enabled] [ found this behaviour weird and synology and mac forumns do not seem to have an answer unless you use a router]