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Memory channels are organized as follows:

Table 40. Memory channels

Processor

Chan 0

Processor 1

Slots A1 and

Processor 2

Slots B1 and

General memory module installation guidelines

To ensure optimal performance of your system, follow the general guidelines when configuring your system memory. If your

system's memory configurations fail to observe these guidelines, your system might not boot, stop responding during memory

configuration, or operate with reduced memory.

NOTE:

Memory configurations that fail to observe these guidelines can prevent your appliance from booting, stop

responding during memory configuration, or operating with reduced memory.

The following are the recommended guidelines for installing memory modules:

● RDIMMs and LRDIMMs must not be mixed.

● If memory modules with different speeds are installed, they will operate at the speed of the slowest installed memory

module(s) or slower depending on appliance DIMM configuration.

● Populate memory module sockets only if a processor is installed. For single-processor appliance, sockets A1 to A12 are

available. For dual-processor appliance, sockets A1 to A12 and sockets B1 to B12 are available.

● Populate all the sockets with white release tabs first, and then the black release tabs.

● Mixing of more than one memory module capacities in the appliance is not supported.

● In a dual-processor configuration, the memory configuration for each processor should be identical. For example, if you

populate socket A1 for processor 1, then populate socket B1 for processor 2, and so on.

● VxRail appliances require that you populate six memory modules per processor for single processor configurations and

twelve memory modules per processor for dual-processor configurations (one DIMM per channel) at a time to maximize

performance.

Expansion cards and expansion card riser

An expansion card in the appliance is an add-on card that can be inserted into an expansion slot on the system board or riser

card to add enhanced functionality to the appliance through the expansion bus.

NOTE:

To avoid data loss, ensure that you refer to the procedures in the SolVe Desktop application before performing any

memory or expansion card replacement or upgrade procedures.

NOTE:

A System Event Log (SEL) event is logged if an expansion card riser is unsupported or missing. It does not prevent

your appliance from turning on and no BIOS POST message or F1/F2 pause is displayed.

Expansion card installation guidelines

Your appliance supports PCI Express Generation 3 expansion cards.

Table 41. Expansion card riser configurations

Expansion card riser

Riser 1A

Riser 2A

The following table provides guidelines for expansion cards priority to ensure proper cooling and mechanical fit.

Replacing and adding hardware

Chan 1

Chan 2

Slots A2 and

Slots A3 and A9

Slots B2 and

Slots B3 and B9

PCIe slots on the

riser

Slot 1

Slot 2

Slot 3

Chan 3

Slots A4 and A10 Slots A5 and A11

Slots B4 and B10 Slots B5 and B11

Processor

Height

connection

Processor 1

Low Profile

Processor 1

Low Profile

Processor 2

Low Profile

Chan 4

Chan 5

Slots A6 and A12

Slots B6 and B12

Length

Half Length

Slot

width

x16