NEC NX7700i, 5020M-16 operation manual Base Module, Expansion Power Bay, Cell, 2.2.5. I/O Module

Base Module

2.2.2Base Module

A base module is composed of cells, iSP cards, I/O modules, power bays, and DPSs.

2.2.3Expansion Power Bay

The expansion power bay is used only when the power is supplied from two systems or 100VAC. It is never used for a single power supply system.

2.2.4Cell

A cell is composed of up to four processors, a CPU node controller, a memory controller, and main memory. The main memory can vary from the minimum 2GB to the maximum 64GB. At least one cell needs to be installed for the base module. Up to two cells can be installed.

2.2.5.I/O Module

The I/O module provides 8 PCI slots corresponding to 133MHz PCI-X buses, allowing up to 8 PCI cards to be used.

The PCI card can be inserted or taken out in online mode (hereafter called the “hot swap”) with some exceptions. Consequently, the base module need not be shut down or rebooted each time the PCI card is added or replaced. High availability is achieved with this implementation (note that the OS that supports this implementation is required).

One core module or HDD module is mounted on the I/O module. At least one core module is required for each partition.

A DVD-ROM unit is installed in the I/O module as standard equipment. In addition, a DAT unit and up to four 73GB/146GB/300GB magnetic disk units can be installed as optional units.

At least one I/O module is required for the base module.

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