IBM HS22 User Guide - Page 43

Installing a memory module, Save Settings, Independent channel mode - blade memory configuration

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Installing a memory module Use these instructions to install memory modules in the blade server. The blade server has a total of twelve direct inline memory module (DIMM) slots. The blade server supports very low profile (VLP) DDR3 DIMMs with error code correction (ECC) in 1 GB, 2 GB, 4 GB, 8 GB, and 16 GB capacities. For a current list of supported DIMMs for the blade server, see http://www.ibm.com/servers/ eserver/serverproven/compat/us/. 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 blade server, a message indicates that the memory configuration has changed. Start the Setup utility and select Save Settings (see "Setup utility menu" on page 60 for more information) to save changes. The memory is accessed internally through the system using six channels. Each channel contains two DIMM connectors. The following table lists each channel and which DIMM connectors belong to the channel. Table 2. Memory channel configuration Memory channel Channel 0 Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 DIMM connector DIMM connector 1 and 2 DIMM connector 5 and 6 DIMM connector 3 and 4 DIMM connector 7 and 8 DIMM connector 11 and 12 DIMM connector 9 and 10 Depending on the memory mode that is set in the Setup utility, the blade server can support a minimum of 1 GB and a maximum of 48 GB of system memory on the system board in a blade server with one processor. If two microprocessors are installed, the blade server can support a minimum of 2 GB and a maximum of 96 GB of system memory. There are two different memory modes: v Independent channel mode: Independent channel mode gives a maximum of 96 GB of usable memory with one CPU installed, and 192 GB of usable memory with 2 CPUs installed (using 16 GB DIMMs). The DIMMs can be installed without matching sizes. See the table below for the memory installation order. Table 3. System memory configuration for independent channel mode (1 microprocessor) Installed DIMM socket memory 1 2 3 4 5 6 7 8 9 10 11 12 1 DIMM X 2 DIMMs X X 3 DIMMs X X X 4 DIMMs X X X X 5 DIMMs X X X X X 6 DIMMs X X X X X X Chapter 3. Installing options 29

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Installing a memory module
Use these instructions to install memory modules in the blade server.
The blade server has a total of twelve direct inline memory module (DIMM) slots.
The blade server supports very low profile (VLP) DDR3 DIMMs with error code
correction (ECC) in 1 GB, 2 GB, 4 GB, 8 GB, and 16 GB capacities. For a current list
of supported DIMMs for the blade server, see http://www.ibm.com/servers/
eserver/serverproven/compat/us/.
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 blade
server, a message indicates that the memory configuration has changed. Start the
Setup utility and select
Save Settings
(see “Setup utility menu” on page 60 for
more information) to save changes.
The memory is accessed internally through the system using six channels. Each
channel contains two DIMM connectors. The following table lists each channel and
which DIMM connectors belong to the channel.
Table 2. Memory channel configuration
Memory channel
DIMM connector
Channel 0
DIMM connector 1 and 2
Channel 1
DIMM connector 5 and 6
Channel 2
DIMM connector 3 and 4
Channel 3
DIMM connector 7 and 8
Channel 4
DIMM connector 11 and 12
Channel 5
DIMM connector 9 and 10
Depending on the memory mode that is set in the Setup utility, the blade server
can support a minimum of 1 GB and a maximum of 48 GB of system memory on
the system board in a blade server with one processor. If two microprocessors are
installed, the blade server can support a minimum of 2 GB and a maximum of 96
GB of system memory. There are two different memory modes:
v
Independent channel mode:
Independent channel mode gives a maximum of 96
GB of usable memory with one CPU installed, and 192 GB of usable memory
with 2 CPUs installed (using 16 GB DIMMs). The DIMMs can be installed
without matching sizes. See the table below for the memory installation order.
Table 3. System memory configuration for independent channel mode
(1 microprocessor)
Installed
memory
DIMM socket
1
2
3
4
5
6
7
8
9
10
11
12
1 DIMM
X
2 DIMMs
X
X
3 DIMMs
X
X
X
4 DIMMs
X
X
X
X
5 DIMMs
X
X
X
X
X
6 DIMMs
X
X
X
X
X
X
Chapter 3. Installing options
29