Skip to main content

Installing a DIMM

Use this information to install a DIMM.

Before you install a DIMM, complete the following steps:
  1. Read Safety and Installation guidelines.
  2. Read the documentation that comes with the DIMMs.
  3. If the compute node is installed in a Flex System chassis, remove it (see Removing a compute node from a chassis for instructions).
  4. Carefully lay the compute node on a flat, static-protective surface, orienting the compute node with the bezel pointing toward you.

This component can be installed as an optional device or as a CRU. The installation procedure is the same for the optional device and the CRU.

After you install or remove a DIMM, you must change and save the new configuration information by using the Setup utility. When you turn on the compute node, a message indicates that the memory configuration has changed. Start the Setup utility and select Save Settings (see Using the Setup utility for more information) to save changes.

If you are installing a DIMM as a result of a DIMM failure, you might have to reenable the DIMM. To re-enable the DIMM, complete the following steps:
  1. Verify that the amount of installed memory is the expected amount of memory through the operating system, by watching the monitor as the compute node starts, by using the CMM sol command, or through the management node (if available).
  2. Run the Setup utility to reenable the DIMMs (see Using the Setup utility for more information).

The compute node has a total of 48 dual inline memory module (DIMM) connectors. The compute node supports low-profile (LP) DDR3 DIMMs with error-correcting code (ECC) in 4 GB, 8 GB, 16 GB and 32 GB capacities.

The following illustration shows the system-board components, including the DIMM connectors.


Graphic illustrating the system-board connectors

The memory is accessed internally through 16 channels (four channels for each microprocessor). Each channel contains three DIMM connectors. Each channel can have a maximum of eight ranks. The following table lists each channel and shows which DIMM connectors are in the channel.

Table 1. Memory-channel configuration.

The memory-channel configuration table is a three-column table that shows the relationship between microprocessors, memory channels, and the DIMM connectors. Column 1 lists microprocessors one through four. Column 2 identifies the memory channels that are associated with each microprocessor. Column 3 lists the DIMM connectors that are in each memory channel.

MicroprocessorMemory channelDIMM connectors
Microprocessor 1Channel 11, 2, and 3
Channel 04, 5, and 6
Channel 27, 8, and 9
Channel 310, 11, and 12
Microprocessor 2Channel 113, 14, and 15
Channel 016, 17, and 18
Channel 219, 20, and 21
Channel 322, 23, and 14
Microprocessor 3Channel 225, 26, and 27
Channel 328, 29, and 30
Channel 131, 32, and 33
Channel 034, 35, and 36
Microprocessor 4Channel 237, 38, and 39
Channel 340, 41, and 42
Channel 143, 44, and 45
Channel 046, 47, and 48
The following notes describe information that you must consider when you install memory:
  • You cannot mix RDIMMs, LRDIMMs and UDIMMs in the same compute node.
  • UDIMMs are not supported at three DIMMs per channel.
  • A total of eight ranks on each channel is supported.
  • If a quad-rank DIMM is installed, install it in the connector at the end of the memory channel.
  • If a channel has one or more quad-rank RDIMMs, only two DIMMs per channel is supported. The quad-rank, eight rank per channel limitation only applies to RDIMMs. Quad-rank LRDIMMs can be installed at three DIMMs per channel since the processor recognizes LRDIMMs as dual-rank DIMMs.
There are three memory modes:
  • Independent-channel mode: Independent-channel mode provides a maximum of 384 GB of usable memory per processor and 1536 GB of usable memory with all four processors installed using 32 GB DIMMs. DIMMs must be first installed in the last physical DIMM connector of each channel. DIMMs should also be installed one DIMM per channel first. The best performance is seen with an even memory distribution among all four channels on the microprocessor. DIMMs can be installed without matching sizes. Individual channels may run at different DIMM timings, but all channels must run at the same interface frequency. DIMMs with different timing parameters can be installed in different connectors of the same channel, but only timings that support the slowest DIMM are applied to all the DIMMs. Faster DIMMs operate at timings that are supported by the slowest installed DIMM.
  • Mirrored-channel mode: In mirrored-channel mode, memory is installed in pairs. Both DIMMs in a pair must be identical in capacity, type, and rank count. The channels are grouped in pairs with each channel receiving the same data. One channel is used as a backup of the other, which provides redundancy. In mirrored-channel mode, memory must be installed in pairs. The memory content is mirrored between channel 0 and channel 1 and between channel 2 and channel 3. Mirrored-channel mode requires that channel 0 and channel 1, and channel 2 and channel 3 are be populated identically in regard to size and organization. DIMM connector populations within a channel do not have to be identical, but the same DIMM connector location across channel 0 and channel 1 and across channel 2 and channel 3 must be populated in the same way. The effective memory that is available to the system is only half of what is installed.
  • Rank-sparing mode: In rank-sparing mode, one memory DIMM rank serves as a spare of the other ranks on the same channel. The spare rank is held in reserve and is not used as active memory. The spare rank must have identical or larger memory capacity than all the other active DIMM ranks on the same channel. After an error threshold is surpassed, the contents of that rank are copied to the spare rank. The failed rank of DIMMs is taken offline, and the spare rank is put online and used as active memory in place of the failed rank.
    The following notes describe additional information that you must consider when you select rank-sparing memory mode:
    • Memory sparing on one channel is independent of the sparing on all other channels.
    • You can use the Setup utility to determine the status of the DIMM ranks.
    • If only one DIMM is present in a channel and the DIMM is dual or single rank, then sparing mode should not be enabled.
    Rank-sparing on one channel is independent of the sparing on all other channels. You can use the Setup utility to determine the status of the DIMM ranks.

Install DIMMs in the order that is indicated in the following table for independent-channel mode.

Table 2. DIMM population sequence for independent-channel mode.

The independent-channel mode DIMM installation sequence table is a four-column table where the rows indicate the DIMM installation sequence for independent-channel mode. Column 1 lists the DIMM installation order. Column 2 indicates the DIMM connectors to populate for systems with one microprocessor. Column 3 indicates the DIMM connectors to populate for systems with two microprocessors. Column 4 indicates the DIMM connectors to populate for systems with four microprocessors.

Number of DIMMs installed1 microprocessor installed2 microprocessors installed4 microprocessors installed
1DIMM 4DIMM 4DIMM 4
2DIMMs 1 and 4DIMMs 4 and 16DIMMs 4 and 16
3DIMMs 1, 4, and 9DIMMs 1, 4, and 16DIMMs 4, 16, and 33
4DIMMs 1, 4, 9, and 12DIMMs 1, 4, 13, and 16DIMMs 4, 16, 33, and 45
5DIMMs 1, 4, 9, 5, and 12DIMMs 1, 4, 9, 13, and 16DIMMs 1, 4, 16, 33, and 45
6DIMMs 1, 2, 4, 9, 5, and 12DIMMs 1, 4, 9, 13, 16, and 21DIMMs 1, 4, 13, 16, 33, and 45
7DIMMs 1, 2, 4, 8, 9, 5, and 12DIMMs 1, 4, 9, 12, 13, 16, and 21DIMMs 1, 4, 13, 16, 33, 36, and 45
8DIMMs 1, 2, 4, 8, 9, 5, 11, and 12DIMMs 1, 4, 9, 12, 13, 16, 21, and 24DIMMs 1, 4, 13, 16, 33, 36, 45, and 48
9DIMMs 1, 2, 4, 6, 8, 9, 5, 11, and 12DIMMs 1, 4, 5, 9, 12, 13, 16, 21, and 24DIMMs 1, 4, 9, 13, 16, 33, 36, 45, and 48
10DIMMs 1, 2, 3, 4, 6, 8, 9, 5, 11, and 12DIMMs 1, 4, 5, 9, 12, 13, 16, 17, 21, and 24DIMMs 1, 4, 9, 13, 16, 21, 33, 36, 45, and 48
11DIMMs 1, 2, 3, 4, 6, 7, 8, 9, 5, 11, and 12DIMMs 1, 2, 4, 5, 9, 12, 13, 16, 17, 21, and 24DIMMs 1, 4, 9, 13, 16, 21, 28, 33, 36, 45, and 48
12DIMMs 1, 2, 3, 4, 6, 7, 8, 9, 10, 5, 11, and 12DIMMs 1, 2, 4, 5, 9, 12, 13, 14, 16, 17, 21, and 24DIMMs 1, 4, 9, 13, 16, 21, 28, 33, 36, 40, 45, and 48
13 DIMMs 1, 2, 4, 5, 8, 9, 12, 13, 14, 16, 17, 21, and 24DIMMs 1, 4, 9, 12, 13, 16, 21, 28, 33, 36, 40, 45, and 48
14 DIMMs 1, 2, 4, 5, 8, 9, 12, 13, 14, 16, 17, 20, 21, and 24DIMMs 1, 4, 9, 12, 13, 16, 21, 24, 28, 33, 36, 40, 45, and 48
15 DIMMs 1, 2, 4, 5, 8, 9, 11, 12, 13, 14, 16, 17, 20, 21, and 24DIMMs 1, 4, 9, 12, 13, 16, 21, 24, 25, 28, 33, 36, 40, 45, and 48
16 DIMMs 1, 2, 4, 5, 8, 9, 11, 12, 13, 14, 16, 17, 20, 21, 23, and 24DIMMs 1, 4, 9, 12, 13, 16, 21, 24, 25, 28, 33, 36, 37, 40, 45, and 48
17 DIMMs 1, 2, 4, 5, 6, 8, 9, 11, 12, 13, 14, 16, 17, 20, 21, 23, and 24DIMMs 1, 4, 5, 9, 12, 13, 16, 21, 24, 25, 28, 33, 36, 37, 40, 45, and 48
18 DIMMs 1, 2, 4, 5, 6, 8, 9, 11, 12, 13, 14, 16, 17, 18, 20, 21, 23, and 24DIMMs 1, 4, 5, 9, 12, 13, 16, 17, 21, 24, 25, 28, 33, 36, 37, 40, 45, and 48
19 DIMMs 1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 13, 14, 16, 17, 18, 20, 21, 23, and 24DIMMs 1, 4, 5, 9, 12, 13, 16, 17, 21, 24, 25, 28, 32, 33, 36, 37, 40, 45, and 48
20 DIMMs 1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 13, 15, 14, 16, 17, 18, 20, 21, 23, and 24DIMMs 1, 4, 5, 9, 12, 13, 16, 17, 21, 24, 25, 28, 32, 33, 36, 37, 40, 44, 45, and 48
21 DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 15, 14, 16, 17, 18, 20, 21, 23, and 24DIMMs 1, 2, 4, 5, 9, 12, 13, 16, 17, 21, 24, 25, 28, 32, 33, 36, 37, 40, 44, 45, and 48
22 DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 15, 14, 16, 17, 18, 19, 20, 21, 23, and 24DIMMs 1, 2, 4, 5, 9, 12, 13, 14, 16, 17, 21, 24, 25, 28, 32, 33, 36, 37, 40, 44, 45, and 48
23 DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 14, 16, 17, 18, 19, 20, 21, 23, and 24DIMMs 1, 2, 4, 5, 9, 12, 13, 14, 16, 17, 21, 24, 25, 28, 32, 33, 35, 36, 37, 40, 44, 45, and 48
24 DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 14, 16, 17, 18, 19, 20, 21, 22, 23, and 24DIMMs 1, 2, 4, 5, 9, 12, 13, 14, 16, 17, 21, 24, 25, 28, 32, 33, 35, 36, 37, 40, 44, 45, 47, and 48
25  DIMMs 1, 2, 4, 5, 8, 9, 12, 13, 14, 16, 17, 21, 24, 25, 28, 32, 33, 35, 36, 37, 40, 44, 45, 47, and 48
26  DIMMs 1, 2, 4, 5, 8, 9, 12, 13, 14, 16, 17, 20, 21, 24, 25, 28, 32, 33, 35, 36, 37, 40, 44, 45, 47, and 48
27  DIMMs 1, 2, 4, 5, 8, 9, 12, 13, 14, 16, 17, 20, 21, 24, 25, 28, 29, 32, 33, 35, 36, 37, 40, 44, 45, 47, and 48
28  DIMMs 1, 2, 4, 5, 8, 9, 12, 13, 14, 16, 17, 20, 21, 24, 25, 28, 29, 32, 33, 35, 36, 37, 40, 41, 44, 45, 47, and 48
29  DIMMs 1, 2, 4, 5, 8, 9, 11, 12, 13, 14, 16, 17, 20, 21, 24, 25, 28, 29, 32, 33, 35, 36, 37, 40, 41, 44, 45, 47, and 48
30  DIMMs 1, 2, 4, 5, 8, 9, 11, 12, 13, 14, 16, 17, 20, 21, 23, 24, 25, 28, 29, 32, 33, 35, 36, 37, 40, 41, 44, 45, 47, and 48
31  DIMMs 1, 2, 4, 5, 8, 9, 11, 12, 13, 14, 16, 17, 20, 21, 23, 24, 25, 26, 28, 29, 32, 33, 35, 36, 37, 40, 41, 44, 45, 47, and 48
32  DIMMs 1, 2, 4, 5, 8, 9, 11, 12, 13, 14, 16, 17, 20, 21, 23, 24, 25, 26, 28, 29, 32, 33, 35, 36, 37, 38, 40, 41, 44, 45, 47, and 48
33  DIMMs 1, 2, 4, 5, 6, 8, 9, 11, 12, 13, 14, 16, 17, 20, 21, 23, 24, 25, 26, 28, 29, 32, 33, 35, 36, 37, 38, 40, 41, 44, 45, 47, and 48
34  DIMMs 1, 2, 4, 5, 6, 8, 9, 11, 12, 13, 14, 16, 17, 18, 20, 21, 23, 24, 25, 26, 28, 29, 32, 33, 35, 36, 37, 38, 40, 41, 44, 45, 47, and 48
35  DIMMs 1, 2, 4, 5, 6, 8, 9, 11, 12, 13, 14, 16, 17, 18, 20, 21, 23, 24, 25, 26, 28, 29, 31, 32, 33, 35, 36, 37, 38, 40, 41, 44, 45, 47, and 48
36  DIMMs 1, 2, 4, 5, 6, 8, 9, 11, 12, 13, 14, 16, 17, 18, 20, 21, 23, 24, 25, 26, 28, 29, 31, 32, 33, 35, 36, 37, 38, 40, 41, 43, 44, 45, 47, and 48
37  DIMMs 1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 13, 14, 16, 17, 18, 20, 21, 23, 24, 25, 26, 28, 29, 31, 32, 33, 35, 36, 37, 38, 40, 41, 43, 44, 45, 47, and 48
38  DIMMs 1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 23, 24, 25, 26, 28, 29, 31, 32, 33, 35, 36, 37, 38, 40, 41, 43, 44, 45, 47, and 48
39  DIMMs 1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 23, 24, 25, 26, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 47, and 48
40  DIMMs 1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 23, 24, 25, 26, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 46, 47, and 48
41  DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 23, 24, 25, 26, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 46, 47, and 48
42  DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 46, 47, and 48
43  DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 46, 47, and 48
44  DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 45, 46, 47, and 48
45  DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 45, 46, 47, and 48
46  DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 45, 46, 47, and 48
47  DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 45, 46, 47, and 48
48  DIMMs 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, and 48

Install DIMMs in the order that is indicated in the following table for mirrored-channel mode.

Table 3. DIMM population sequence for mirrored-channel mode.

The mirrored-channel mode DIMM installation sequence table is a four-column table where the rows indicate the DIMM installation sequence for mirrored-channel mode. Column 1 lists the DIMM installation order. Column 2 indicates the DIMM connectors to populate for systems with one microprocessor. Column 3 indicates the DIMM connectors to populate for systems with two microprocessors. Column 4 indicates the DIMM connectors to populate for systems with four microprocessors.

Number of DIMM pairs installed1 microprocessor installed2 microprocessor installed4 microprocessor installed
1DIMMs 1 and 41DIMMs 1 and 41DIMMs 1 and 41
2DIMMs 1 and 4, 9 and 121DIMMs 1 and 4, 13 and 161DIMMs 1 and 4, 13 and 161
3DIMMs 1 and 4, 9 and 12, 2 and 51DIMMs 1 and 4, 13 and 16, 9 and 121DIMMs 1 and 4, 13 and 16, 33 and 361
4DIMMs 1 and 4, 9 and 12, 2 and 5, 8 and 111DIMMs 1 and 4, 13 and 16, 9 and 12, 21 and 241DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 481
5DIMMs 1 and 4, 9 and 12, 2 and 5, 8 and 11, 3 and 61DIMMs 1 and 4, 13 and 16, 9 and 12, 21 and 24, 2 and 51DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 121
6DIMMs 1 and 4, 9 and 12, 2 and 5, 8 and 11, 3 and 6, 7 and 101DIMMs 1 and 4, 13 and 16, 9 and 12, 21 and 24, 2 and 5, and 14 and 171DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 241
7 DIMMs 1 and 4, 13 and 16, 9 and 12, 21 and 24, 2 and 5, and 14 and 17, 8 and 111DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 281
8 DIMMs 1 and 4, 13 and 16, 9 and 12, 21 and 24, 2 and 5, and 14 and 17, 8 and 11, 20 and 231DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 401
9 DIMMs 1 and 4, 13 and 16, 9 and 12, 21 and 24, 2 and 5, and 14 and 17, 8 and 11, 20 and 23, 3 and 61DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 40, 2 and 51
10 DIMMs 1 and 4, 13 and 16, 9 and 12, 21 and 24, 2 and 5, and 14 and 17, 8 and 11, 20 and 23, 3 and 6, 15 and 181DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 40, 2 and 5, 14 and 171
11 DIMMs 1 and 4, 13 and 16, 9 and 12, 21 and 24, 2 and 5, and 14 and 17, 8 and 11, 20 and 23, 3 and 6, 15 and 18, 7 and 101DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 40, 2 and 5, 14 and 17, 32 and 351
12 DIMMs 1 and 4, 13 and 16, 9 and 12, 21 and 24, 2 and 5, and 14 and 17, 8 and 11, 20 and 23, 3 and 6, 15 and 18, 7 and 10, 19 and 221DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 40, 2 and 5, 14 and 17, 32 and 35, 44 and 471
13  DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 40, 2 and 5, 14 and 17, 32 and 35, 44 and 47, 8 and 111
14  DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 40, 2 and 5, 14 and 17, 32 and 35, 44 and 47, 8 and 11, 20 and 231
15  DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 40, 2 and 5, 14 and 17, 32 and 35, 44 and 47, 8 and 11, 20 and 23, 26 and 291
16  DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 40, 2 and 5, 14 and 17, 32 and 35, 44 and 47, 8 and 11, 20 and 23, 26 and 29, 38 and 411
17  DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 40, 2 and 5, 14 and 17, 32 and 35, 44 and 47, 8 and 11, 20 and 23, 26 and 29, 38 and 41, 3 and 61
18  DIMMs 1 and 4, 13 and 16, 33 and 36, 45 and 48, 9 and 12, 21 and 24, 25 and 28, 37 and 40, 2 and 5, 14 and 17, 32 and 35, 44 and 47, 8 and 11, 20 and 23, 26 and 29, 38 and 41, 3 and 6, 15 and 181
  1. For mirrored-channel mode, the DIMM pair must be identical in size, type, and rank count.

To install a DIMM, complete the following steps:

  1. Remove the cover (see Removing the compute node cover).
  2. Read the documentation that comes with the DIMM.
  3. Remove the air baffle installed over the DIMM connector.

    Graphic illustrating air baffles remove and install
  4. Locate the DIMM connectors (see System-board connectors). Determine which DIMM connector you want to install the DIMM in.
  5. Touch the static-protective package that contains the DIMM to any unpainted metal surface on the Flex System chassis or any unpainted metal surface on any other grounded rack component in the rack in which you are installing the DIMM for at least 2 seconds; then, remove the DIMM from its package.
    Graphic illustrating the installation of DIMMs in the blade server
  6. Make sure that both retaining clips on the DIMM connector are in the open position.
  7. Turn the DIMM so that the DIMM keys align correctly with the DIMM connector on the system board.
    Attention
    To avoid breaking the retaining clips or damaging the DIMM connector, handle the clips gently.
  8. Press the DIMM into the DIMM connector. The retaining clips lock the DIMM into the connector.
  9. Make sure that the small tabs on the retaining clips engage the notches on the DIMM. If there is a gap between the DIMM and the retaining clips, the DIMM has not been correctly installed. Press the DIMM firmly into the connector, and then press the retaining clips toward the DIMM until the tabs are fully seated. When the DIMM is correctly installed, the retaining clips are parallel to the sides of the DIMM.

    Graphic illustrating air baffles remove and install
  10. Install the air baffle over the DIMM connector.
    Attention
    • Install the air baffles with the arrow indicating air flow direction pointing to the rear of the compute node.
    • To maintain proper system cooling, do not operate the compute node without air baffles installed over the DIMM connectors.
After you install the DIMM, complete the following steps:
  1. Install the cover onto the compute node (see Installing the compute node cover for instructions).
  2. Install the compute node into the chassis (see Installing a compute node in a chassis for instructions).