@mirrormax
I’ve put together this MZ72-HBO build but it isn’t posting. Any ideas?
Can you or others find any reasons why it is not posting?
The fans all turn on and I can see green lights on the mobo indicating that the BMC and IPMI are active.
The lights on the Lan ports light up when I connect a laptop to the back Ethernet ports.
Here are the Specifications of the build:
Motherboard:
Gigabyte MZ72-HBO (Rev 1.1)
Link to motherboard manual:
Link to Gigabyte website for motherboard information:
Dual AMD EPYC™ 7002 series processor family8-Channel RDIMM/LRDIMM DDR4 per processor, 16 x DIMMs2 x 10Gb/s BASE-T LAN ports (Broadcom® BCM57416)1 x Dedicate...
www.gigabyte.com
CPUs:
2x AMD Epyc Rome 64 core
(128 core total)
CPU Part # ZS1406E2VJUG5
Link to CPU info:
RAM:
16x 16GB DDR4 3200 (256GB total)
Samsung 1x 16GB DDR4-3200 RDIMM PC4-25600R Dual Rank x8 Module
Part# M393A2K43DB3-CWEBY
Link to Samsung website for info about ram:
RDIMM M393A2K43DB3-CWE(DDR4). Find technical product specifications, features and more at Samsung Semiconductor.
www.samsung.com
SSD:
Western Digital WD BLACK SN850 NVMe M.2 2280 1TB PCI-Express 4.0 x4 3D NAND
Cooling:
2x Noctua NH-U9 TR4-SP3, for AMD sTRX4/TR4/SP3
Chassis:
Supermicro SC747BTQ-R2K02B 4U Barebone Supermicro SC747BTQ-R2K02B 4U BareboneW/ Dual Power Supplies (PWS-204A-1R) 8x Tray
Link to chassis manual:
Power Supplies:
2x model - PWS-2K04A-1R
80Plus Titanium
(1x of the power supplies is a redundant supply.)
Link to the data sheet for the power supplies:
So far I have tried...
1. Removing all of the Ram and putting only one reseated Dimm per cpu in the DIMM#1 position
2. Plugging directly into the wall.
3. Reseating both CPUs and reapplying thermal paste
4. I tried an old Radeon gpu to get video rather than the onboard vga because when reading the Gigabyte MZ72-HBO manual the mobo’s VGA is referred to as “loop thru” and might be a VGA Input?
Dual AMD EPYC™ 7002 series processor family8-Channel RDIMM/LRDIMM DDR4 per processor, 16 x DIMMs2 x 10Gb/s BASE-T LAN ports (Broadcom® BCM57416)1 x Dedicate...
www.gigabyte.com
I’m not sure if the power supply has enough power. I purchased some power cables because the power supplies that were included with the Supermicro 4u chassis that I purchased did not include any power cables.
Here are some details about the two power cables that I went ahead and bought for the power supplies to replace the missing power cables.
Power cable details:
16 AWG gauge conductors
13 amp / 1625 Watt rated NEMA to IEC cables with standard NEMA 15-5-P grounded power plug s and 3 pin shrouded female IEC-320-C13 connectors.
They are SJT 13A/300V rated.
I think the power supplies might be power switching? If they are power switching then with the setup I have I might only need an input of 1000W: 100-127Vac/12.5-9.5A?
I put more details about the PSUsbelow.
Power Supplies:
2x PWS-2K04A-1R 80Plus Titanium
(1x is redundant.)
Power Supply Input Characteristics:
RATED VOLTAGE / CURRENT
1000W: 100-127Vac/12.5-9.5A
1800W: 200-220Vac/10-9.5A
1980W: 220-230Vac/10-9.8A
2000W: 230-240Vac/10-9.8A
2000W: 200-240Vac/11.8-9.8A (for UL/cUL use only)
RATED FREQUENCY
50-60HZ
INRUSH CURRENT
Less than 30A
POWER FACTOR
0.98 @ max load (Typical)
INLET CONNECTOR:
IEC-60320-C14
One more thing that I wasn’t sure about was if the front panel connectors could cause the server to not post if they were not placed into the correct pins on the motherboard.
I bought a Supermicro breakout cable in order to configure the cables into the gigabyte motherboard since the Supermicro chassis had its own front panel connector that needed to breakout in order to configure the front panel pins onto the motherboard. Has it ever been known to cause a server to not post by have the front panel header inappropriately configured?
I did read the motherboard manual for the front panel configuration but wasn’t certain that I had it right.
I think that I have placed ram in the correct dimm slots? They are lettered in the manual and according to the manual I think i have one in dimm slot #1 for each CPU.
Can anyone confirm that the Motherboard has VGA input only and no VGA out?
One more thing about the build is that there is a Supermicro backplane for SAS in the chassis but I am not using it and have unplugged it. I am just using the M.2 SSD for now. Though it doesn’t have any OS on it yet since it isn’t loaded yet as I haven’t been able to get to the bios screen or post.
Thank you very much for any time in considering what the issues may be in this build.
I will be truly grateful for any good ideas!
Thank you.