SYSTEM CONFIGURATION GUIDE – NEC Express5800/R120h-2M
NEC Corporation Revision 5.0 – January 2018 43
General Supplementary Matters
HDD
Capacity of Hard disk drive is displayed in decimal not binary. 1GB＝1000^3B、1TB=1000^4B.
PCI expansion slot
Transfer speed of PCI Express
PCI Express (PCIe): 2.5Gb/s (simplex) per lane
PCI Express 2.0 (PCIe 2.0): 5Gb/s (simplex) per lane
PCI Express 3.0 (PCIe 3.0): 8Gb/s (simplex) per lane
Time display
A system clock is affected by temperature conditions in storage. If high accuracy of the system clock is required, use of
NPT servers is recommended.
Memory Supplementary matters
Installation rule
The number of memory which can be installed varies depending on number of installed CPUs.
This installation rule defined to maximize performance efficiently in multiple cores and tasks operation.
Registered DIMM (RDIMM), Load Reduced DIMM (LRDIMM) can be installed up to 12 per 1CPU.
Mixing of RDIMM and LRDIMM is not allowed to be installed.
When install DIMMs, higher capacity memory must be installed preferentially, if ignored this rule, it may cause failures of DIMMs. This
rule applies in factory installation.
For dual CPU system, install DIMM to CPU1 firstly and then to CPU2 alternately.
Memory population varies with number of installed DIMMs. In installation of 5, 7, 9 or 11 DIMMs per CPU, optimal performance might
NOT be obtained. Other memory populations are recommended.
Single CPU system
Dual CPU system
To Next Page
Loading...
Need help?
General
