NEC HV8600, User Manual

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System Overview 1-19
Processor
Each Pentium III Xeon processor is packaged in a single edge contact (S.E.C.)
cartridge. The cartridge includes the processor core with an integrated 16 KB
primary (L1) cache; the secondary (L2) cache (1MB or 2MB); a thermal plate;
and a back cover. The cartridge is secured by a retention module attached to the
CPU backboard. Depending on configuration, your system has one to eight
processors (see Figure 1-9). Additional processors enhance performance and
enable symmetric multiprocessing (SMP). All processors access the same
memory and I/O space and tasks can run on either CPU if your operating system
(OS) supports SMP.
Memory
The system supports a maximum of two memory boards. Each memory board
contains sixteen 168-pin DIMM sockets (see Figure 1-10). A minimum system
configuration includes 256 MB (using four 64 MB DIMMs) of system memory.
Sixteen DIMM sockets on each memory board allow for system memory
expansion up to 8 GB (using a total of thirty two 256 MB DIMMs on two
memory boards.) ECC generation/checking is provided for detection and
correction of memory errors.
Note: Only use DIMMs approved for use in this server
system. Call your customer service representative for
information.
Bus Master I/O Expansion Slots
The server's expansion capabilities meet the needs of high performance I/O
servers by providing a combination of PCI local bus and ISA connectors. The
system I/O board offers eleven dedicated PCI slots, four of which are 64-bit, and
one ISA slot. The ISA architecture supports 32-bit memory addressing and 16-
bit data transfers for the CPU, DMA, and bus masters.
Real-Time Clock/Calendar
The real-time clock provides system clock/calendar information stored in a non-
volatile memory (NVRAM) (Figure 1-6, M). The real-time clock battery (see
Figure 1-6, G) provides power backup for the real-time clock.
BIOS
A BIOS and Setup Utility are located in the Flash memory on the system I/O
board and include support for system setup and PCI/ISA Plug-and-Play auto-
configuration. A number of security, reliability, and management features are
also incorporated to meet vital server needs.