NEC NX7700i/5040H-32 - Manual (Page 39)

Base Module
855-900547-200 2-3
2.2. Name and Function of Components
2.2.1. Main Cabinet (Primary Cabinet)
The main cabinet contains the cells, crossbar interconnects, iSP cards, CLK cards, I/O
enclosures, I/O modules, power bays, and DPSs. For the mounting location of these
components, see Figure 1-2 in Section 1.1.
2.2.2. Expansion Cabinet (Additional Cabinet)
The expansion cabinet contains the I/O enclosures, I/O modules, power bays, and DPSs. For
the mounting location of these components, see Figure 1-3 in Section 1.1. Some expansion
cabinets do not contain the power bay. Peripheral units are installed in such cabinets.
Mount the expansion cabinet containing the power bay at the left side of the main cabinet
viewed from the front. The expansion cabinet which does not contain the power bay can be
installed in either the left or right side of the main cabinet.
2.2.3. Cell
A cell consists of up to four processors, a CPU node controller, a memory controller, and main
memory. The minimum 2GB to maximum 128GB can be installed for the main memory by
combining the MEM cards. At least one cell is required in the main cabinet. A maximum of eight
cells can be installed.
2.2.4. Crossbar Interconnect
The crossbar interconnect is connected to other crossbar interconnect for data transmission
between cells. It can connect to one to four I/O modules for data transmission between the cell
and I/O modules. A maximum of four crossbar interconnects can be installed in the main
cabinet.
2.2.5. CLK Card
The CLK card supplies the clock to the system. A system having high reliability can be
constructed by duplicating the CLK card.
2.2.6. I/O Enclosure
The I/O enclosure contains two PCI bays each mounting one I/O module. Up to two I/O
enclosures can be installed in the main and expansion cabinets, respectively.
Figure 2-3 shows the external view of the I/O enclosure, and Figure 2-4 the look of the I/O
enclosure with the filter cover removed. PCIBAY numbers in the main cabinet are shown in
Figure 2-5, and those in the expansion cabinet in Figure 2-6.