Lenovo ThinkEdge SE350 V2 - DRAM Dimms Installation Order; Power on and Power off the Server; Power on the Server

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
DIMM slot 1 DIMM slot 2 DIMM slot 3 DIMM slot 4
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)” on page 182
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 are specified in:
•
Chapter 2 “Server components” on page 17
• “Troubleshooting by system LEDs” on page 187
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.
For information about powering off the server, see
“Power off the server” on page 44.
Chapter 5. Hardware replacement procedures 43