Dram Dimms Installation Order; Power On And Power Off The Server; Power On The Server - Lenovo ThinkEdge SE350 V2 Hardware Maintenance Manual

DRAM DIMMs installation order

This section contains information of how to install DRAM DIMMs properly.
Independent memory mode installation order
In independent memory mode, memory channels can be populated with DIMMs in any order and you can
populate all channels for each processor in any order with no matching requirements. Independent memory
mode provides the highest level of memory performance, but lacks failover protection. The DIMM installation
order for independent memory mode varies based on the number of processors and memory modules
installed in the server.
Independent memory mode guidelines:
• Individual memory channels can run at different DIMM timings, but all channels must run at the same
interface frequency.
Independent mode memory population sequence
The following table shows the DIMM population sequence for the independent memory mode.
Total DIMMs
installed
1
2
4†
Attention:
• Installation sequence: 1, 4, 2, 3.
• ThinkEdge SE350 V2 only supports the above-listed numbers of DIMMs installed in the node.
Note: ‡DIMM configurations that support Software Guard Extensions (SGX), see "Enable Software Guard
Extensions (SGX)" in User Guide or System Configuration Guide to enable this feature.

Power on and power off the server

Follow instructions in this section to power on and power off the server.

Power on the server

After the server performs a short self-test (power status LED flashes quickly) when connected to input power,
it enters a standby state (power status LED flashes once per second).
Power button location and power LED locations are specified in:
• "Server components" in User Guide or System Configuration Guide
• "Troubleshooting by system LEDs" on page 151
The server can be turned on (power LED on) in any of the following ways:
• You can press the power button.
• The server can restart automatically after a power interruption.
• The server can respond to remote power-on requests sent to the Lenovo XClarity Controller.
DIMM slot 1 DIMM slot 2
√
√
√
DIMM slot 3
√ √
Chapter 1
DIMM slot 4
√
√
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Hardware replacement procedures
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