Dell PowerEdge T640 EMC PowerEdge T640 Installation and Service Manual - Page 108

Installing the NVDIMM-N battery, System memory, System memory guidelines

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Installing the NVDIMM-N battery Prerequisites CAUTION: To avoid damage to the battery connector, you must firmly support the connector while installing or removing a battery. Follow the safety guidelines listed in Safety instructions on page 65. Steps 1. Install the NVDIMM-N battery into the battery cage 2. Using the Phillips #2 screwdriver, tighten the screw to secure the NVDIMM-N battery. 3. Connect the cables to the NVDIMM-N battery. Figure 66. Installing the NVDIMM-N battery Next steps 1. Install the NVDIMM-N battery cage. 2. Follow the procedure listed in After working inside your system on page 66. System memory System memory guidelines The PowerEdge systems support DDR4 Registered DIMMs (RDIMMs), Load Reduced DIMMs (LRDIMMs), and Non-Volatile DIMMs (NVDIMM-Ns). System memory holds the instructions that are executed by the processor. Your system contains 24 memory sockets split into two sets of 12 sockets, one set per processor. Each 12-socket set is organized into six channels. Six memory channels are allocated to each processor. In each channel, the release tabs of the first socket are marked white, and the second socket black. Memory channels are organized as follows: 108 Installing and removing system components

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Installing the NVDIMM-N battery
Prerequisites
CAUTION:
To avoid damage to the battery connector, you must firmly support the connector while installing or
removing a battery.
Follow the safety guidelines listed in
Safety instructions
on page 65.
Steps
1.
Install the NVDIMM-N battery into the battery cage
2.
Using the Phillips #2 screwdriver, tighten the screw to secure the NVDIMM-N battery.
3.
Connect the cables to the NVDIMM-N battery.
Figure 66. Installing the NVDIMM-N battery
Next steps
1.
Install the NVDIMM-N battery cage.
2.
Follow the procedure listed in
After working inside your system
on page 66.
System memory
System memory guidelines
The PowerEdge systems support DDR4 Registered DIMMs (RDIMMs), Load Reduced DIMMs (LRDIMMs), and Non-Volatile DIMMs
(NVDIMM-Ns). System memory holds the instructions that are executed by the processor.
Your system contains 24 memory sockets split into two sets of 12 sockets, one set per processor. Each 12-socket set is organized into six
channels. Six memory channels are allocated to each processor. In each channel, the release tabs of the first socket are marked white, and
the second socket black.
Memory channels are organized as follows:
108
Installing and removing system components