Supermicro H11DSi-NT User Manual

Chapter 3: Troubleshooting
51
When the System Becomes Unstable
A. If the system becomes unstable during or after OS installation, check the following:
1. CPU/BIOS support: Make sure that your CPU is supported and that you have the latest
BIOS installed in your system.
2. Memory support: Make sure that the memory modules are supported by testing the
modules using memtest86 or a similar utility.
Note: Refer to the product page on our website at http:\\www.supermicro.com for memory
and CPU support and updates.
3. HDD support: Make sure that all hard disk drives (HDDs) work properly. Replace the
bad HDDs with good ones.
4. System cooling: Check the system cooling to make sure that all heatsink fans and CPU/
system fans, etc., work properly. Check the hardware monitoring settings in the IPMI
to make sure that the CPU and system temperatures are within the normal range. Also
check the front panel Overheat LED and make sure that it is not on.
5. Adequate power supply: Make sure that the power supply provides adequate power to
the system. Make sure that all power connectors are connected. Please refer to our
website for more information on the minimum power requirements.
6. Proper software support: Make sure that the correct drivers are used.
B. If the system becomes unstable before or during OS installation, check the following:
1. Source of installation: Make sure that the devices used for installation are working
properly, including boot devices such as CD/DVD and CD/DVD-ROM.
2. Cable connection: Check to make sure that all cables are connected and working
properly.
3. Using the minimum conguration for troubleshooting: Remove all unnecessary
components (starting with add-on cards rst), and use the minimum conguration (but
with a CPU and a memory module installed) to identify the trouble areas. Refer to the
steps listed in Section A above for proper troubleshooting procedures.
4. Identifying bad components by isolating them: If necessary, remove a component in
question from the chassis, and test it in isolation to make sure that it works properly.
Replace a bad component with a good one.
5. Check and change one component at a time instead of changing several items at the
same time. This will help isolate and identify the problem.
6. To nd out if a component is good, swap this component with a new one to see if the
system will work properly. If so, then the old component is bad. You can also install the

Supermicro H11DSi-NT Specifications

General

USB 2.0 ports quantity	4
Ethernet LAN (RJ-45) ports	3
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
Number of DIMM slots	16
Supported DIMM module capacities	8GB, 16GB, 32GB, 64GB, 128MB
ECC	Yes
Memory voltage	1.2 V
Memory channels	Octa-channel
Supported memory types	DDR4-SDRAM
Maximum internal memory	2048 GB
Supported memory clock speeds	2666 MHz
BIOS type	EEPROM
ACPI version	5.1
System Management BIOS (SMBIOS) version	3.1.1
RAID levels	0, 1, 5, 10
Supported storage drive interfaces	SATA III
On-board graphics card model	Aspeed AST2500
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	10 - 35 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	8 - 90 %
AMD Opteron series	7000
Processor manufacturer	AMD
Processor number of cores supported	32, 28
Wi-Fi	No
Ethernet interface type	10 Gigabit Ethernet
Number of SATA III connectors	10
Trusted Platform Module (TPM) version	2.0
Sustainability certificates	RoHS
Motherboard form factor	Extended ATX
Harmonized System (HS) code	84733020

Weight and Dimensions

Depth	331 mm
Width	305 mm