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Orion PCI Bridge
The Orion PCI bridge (OPB) is a low-cost I/O subsystem solution for
high-performance systems. The OPB translates transactions between
the system bus and the PCI buses using 32-byte buffers for inbound
and outbound postings. The use of two OPBs in the system creates
an architecture that allows faster data transfers.
Orion Memory Controller
The Orion memory controller (OMC) acts as an interface between the
system bus and the system memory.
control (DC) chip and the data path (DP) chip. The OMC relates to
the DRAM array through four memory interface controller (MIC)
chips.
The OMC supports 256-bit 4-way memory interleaving
resulting to a more efficient memory traffic management.
1.1.3
SCSI Disk Array
The system supports an array of 14 hot-swappable disk drive trays
through two 7-slot SCSI backplane boards (Acer BP-W7). The trays
accommodate wide and narrow SCSI hard disks. With the AIC-7880
SCSI controller onboard, the transfer rate reaches up to 40 MB per
second for ultra-wide SCSI.
1.1.4
Server Management
The system comes with the ASM Pro feature that allows voltage
stability and CPU thermal monitoring, prevents data loss by prompt
ECC memory error reporting, maximizes system resources by
indicating the PCI bus utilization, and promotes efficiency by
minimizing system downtime.
System Introduction
It consists of the DRAM
1-5
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