NEC NEC Express5800 Series, Configuration Manual

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CONFIGURATION GUIDE
–
NEC Express5800/A2040b, A2020b, A2010b, A1040b
NEC Corporation Revision 7.0
– December 2014
18
1.5 COPT
Capacity Optimization (COPT) is a function to optimize computing resources by enabling CPU cores as many
required per workload without any impact to the number of DIMM and PCI slots which depends on CPU
configuration.
When necessary, CPU core can be enabled additionally on-site.
COPT is available only with A2040b COPT supported model (NEC Express5800/A2040b (COPT)).
In order to enable CPU core, Core Activation Key should be ordered for the required number of cores.
Product Name/Description Part Number
One Core Activation Key (for Embedded)

Need to order at the same time of the server. As many CPU cores as the ordered
number of the One Core Activation Key (for Embedded) are to be enabled when
the ordered server is shipped.

Up to the ordered number of the One Core Activation Key (for Embedded), CPU
cores are available for use.
NE3401-H010F
One Core Activation Key (for Add-on)

The enabled CPU core can be added on-site.

As many Code Words as the ordered number of the One Core Activation Key (for
Add-on) are shipped, and additional CPU core can be enabled by applying the
Code Word to the server.
NE3401-H011F
NOTE:

Contact to our sales representative for software supporting COPT function.

When enabling CPU core (or socket) by Core Activation Key, please purchase required software license
as appropriate

In case of using socket license based software, please enable CPU core at the CPU socket on which the
software is operating. Software license is required for the socket with at least one enabled CPU core.

Depending on the OS, the server may need to be rebooted to enable CPU cores

Remarks to use COPT under VMware environment:
- Need to purchase the same number of One Core Activation Key as the number of CPU socket.
- Need to enable the same count of CPU cores among all CPUs (excluding CPUs with all cores
disabled)
<Examples of OK or NG configuration in case of 4CPU configuration>
Ex.1: OK Ex.2: OK Ex.3: NG Ex.4: NG
CPU1: 1 core enabled CPU1: 4 core enabled CPU1: 2 core enabled CPU1: 1 core enabled
CPU2: 1 core enabled CPU2: 0 core enabled CPU2: 1 core enabled CPU2: 1 core enabled
CPU3: 1 core enabled CPU3: 0 core enabled CPU3: 1 core enabled CPU3: 1 core enabled
CPU4: 1 core enabled CPU4: 0 core enabled CPU4: 0 core enabled CPU4: 0 core enabled

For the details, please refer to the latest version of
“Express5800/A2040b Capacity Optimization (COPT)
User's Guide”

Default setting of Core Optimization Mode is
“Decentralize”, where the enabled CPU cores are
distributed to each socket equally.