Lenovo 7X15, Setup Manual

Page: 38 / 104

b. In the Customize a Model pane:
1) Click
Select Options/Parts for a Model
.
2) Enter the machine type and model for your solution.
c. Click the Power tab to see all line cords.
• Make sure that the insulation is not frayed or worn.
3. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo
alterations.
4. Check inside the solution for any obvious unsafe conditions, such as metal filings, contamination, water
or other liquid, or signs of fire or smoke damage.
5. Check for worn, frayed, or pinched cables.
6. Make sure that the power-supply cover fasteners (screws or rivets) have not been removed or tampered
with.
System reliability guidelines
Review the system reliability guidelines to ensure proper system cooling and reliability.
Make sure the following requirements are met:
• To ensure proper cooling, the Flex System chassis is not operated without a compute node or node bay
filler in each node bay.
• When the compute node comes with redundant power, a power supply must be installed in each power-
supply bay.
• Adequate space around the compute node must be spared to allow compute node cooling system to
work properly. Leave approximately 50 mm (2.0 in.) of open space around the front and rear of the
compute node. Do not place any object in front of the fans.
• For proper cooling and airflow, refit the compute node cover before you turn the power on. Do not operate
the compute node for more than 30 minutes with the compute node cover removed, for it might damage
compute node components.
• Cabling instructions that come with optional components must be followed.
• A failed fan must be replaced within 48 hours after malfunction.
• A removed hot-swap fan must be replaced within 30 seconds after removal.
• A removed hot-swap drive must be replaced within two minutes after removal.
• A removed hot-swap power supply must be replaced within two minutes after removal.
• Every air baffle that comes with the compute node must be installed when the compute node starts (some
servers might come with more than one air baffle). Operating the compute node with a missing air baffle
might damage the processor.
• All processor sockets must contain either a socket cover or a processor with heat sink.
• When more than one processor is installed, fan population rules for each compute node must be strictly
followed.
Working inside the compute node with the power on
Guidelines to work inside the compute node with the power on.
Attention:
The server might stop and data loss might occur when internal server components are exposed
to static electricity. To avoid this potential problem, always use an electrostatic-discharge wrist strap or other
grounding systems when working inside the server with the power on.
30
ThinkSystem SN850 Compute Node Setup Guide