Product guide

Chapter 4: Serviceable Components QSSC-S4R Server System Product Guide
Version 1.0
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Figure 52. Installing Non-Redundant System Fans
3. Install the top cover. For instructions, see “Installing the Top Cover” on page 52.
4. Power up the server system.
Hot Swapping Memory Risers
At least one CPU and one memory riser with two DIMMs must be installed for the server to function.
The system supports only DDR3 registered DIMMs.
If two memory risers are installed, one of the risers may be removed while the system is operating. This allows
for the replacement of faulted DIMMs while ensuring continuous operation of the server. Memory riser hot-swap
does not alter overall memory capacity.
Warning The CPU must have at least two DIMMS supporting it during hot swap operations. Memory Hot-
Swapping is only supported in the mirrored mode. NUMA should be enabled in BIOS setup to
perform memory hot swap operation.
Removing a Memory Riser
Warning Memory dividers must be installed at all times during operation for proper airflow.
Warning Defective memory risers removed should be directly replaced in exactly the original configuration.
Do not hot swap defective memory in a new configuration.
1. Remove the top cover. For instructions, see “Removing the Top Cover” on page 51.
2. Press the Attention button on the Memory Riser. See letter “A” on the figure below. The attention LED blinks
for 5 seconds then turns off. Then the power LED starts blinking. The power LED blinks until all memory has
been flushed from the riser. When the power LED turns off, the Memory Riser is safe to remove.