Product guide

QSSC-S4R Server System Product Guide Chapter 4: Serviceable Components
Version 1.0
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3. Once the board is lowered as far as possible, rotate the levers downward so they latch into place to firmly
engage the board into the memory riser slot.
4. Press the attention button. The attention LED and the power LED start blinking. When the attention LED
turns off and the power LED turns solid the system has finished adding the memory riser.
5. Ensure the fan zone airflow configuration is correct, installing or removing a memory airflow baffle if
necessary. For instructions, see “Installing and Removing Memory Air Baffles” on page 67.
6. Install the top cover. For instructions, see “Installing the Top Cover” on page 52.
Hot Adding a Memory Riser
The QSSC-S4R system supports memory hot addition to increase memory capacity by adding memory boards
on empty memory board slots in runtime.
Warning Hot Addition requires OS support to accommodate and utilize the additional memory. NUMA should
be enabled in BIOS setup to perform memory hot addition operation.
1. Ensure the levers on the memory bracket are in the open / up position.
2. Align the edges of the bracket in the bracket guides and slide the memory riser into the main board.
Figure 57. Hot adding a memory riser
3. Once the board is lowered as far as possible, rotate the levers downward so they latch into place to firmly
engage the board into the memory riser slot.
4. Press the attention button. The attention LED and the power LED start blinking. When the attention LED
turns off, the system has added the memory riser.
Installing and Removing Memory Air Baffles
Each front fan has an internal fan zone comprising of two memory slots. Refer to the figure below.