Dimm Installation Sequence - IBM System x3620 M3 7376 Installation And User Manual

v The server supports a maximum of 12 single-rank or dual-rank registered DIMMs
v The server supports three single-rank or dual-rank DIMMs per channel. The
v The RDIMM options that are available for the server are 1 GB, 2 GB, 4 GB, and
v A minimum of one DIMM must be installed for each microprocessor. For
v If you install a ServeRAID-M1015 SAS/SATA adapter, make sure at least 2 GB of
v 1.35V DIMMs are only supported on server models with an Intel Xeon

DIMM installation sequence

The server requires at least one DIMM per microprocessor. Depending on the
server models, the server may come with one 2 GB RDIMM or 4 GB RDIMM, or
three 4 GB RDIMMs.
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System x3620 M3 Type 7376: Installation and User's Guide
– Two 1.35 V single-rank or dual-ranl RDIMMs are installed in the same
channel. In the Setup utility, Memory speed is set to Max performance and
LV-DIMM power is set to Enhance performance mode. The 1.35 V RDIMMs
will function at 1.5 V
(RDIMMs).
following table shows an example of the maximum amount of memory that you
can install, using ranked RDIMMs.
Table 5. Maximum memory installation using ranked RDIMMs
Maximum number
DIMM type of DIMMs
Single-rank 12
Singe-rank 12
Dual-rank 12
Dual-rank 12
Dual-rank 12
8 GB. The server supports a minimum of 1 GB and a maximum of 96 GB of
system memory.
For 32-bit operating systems only: Some memory is reserved for various
system resources and is unavailable to the operating system. The amount of
memory that is reserved for system resources depends on the operating system,
the configuration of the server, and the configured PCI devices. To view the total
amount of installed memory and the amount of configured memory, run the Setup
utility. For additional information, see "Using the Setup utility" on page 84.
example, you must install a minimum of two DIMMs if the server has two
microprocessors. However, to improve system performance, install a minimum of
three DIMMs for each microprocessor.
Note: You can install DIMMs for microprocessor 2 as soon as you install
microprocessor 2; you do not have to wait until all of the DIMM connectors for
microprocessor 1 are filled.
memory is installed in the server before you run DSA from a bootable CD.
series microprocessor.
DIMM size Total memory
1 GB 12 GB
2 GB 24 GB
2 GB 24 GB
4 GB 48 GB
8 GB 96 GB
™
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