Sun Microsystems Netra T4 AC100, Руководство по обслуживанию и системе

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Chapter 10 Functional Description 10-33
FIGURE 10-16
FC-AL Disk subsystem
10.2.15 SCSI
The system implements a small computer system interface (SCSI) for Ultra SCSI,
40 Mbps parallel interface bus. Ultra SCSI provides the following:
■
Efficient peer-to-peer I/O bus devices
■
Mechanical, electrical, and timing specification definition that support transfer
rates of 20 Mbytes/s or 40 Mbytes/s (corresponding to the data path width of an
8-bit, or 16-bit bus, respectively)
■
Peak bandwidth of 40 Mbytes/s (with implemented 16-bit bus width)
The internal SCSI bus is terminated at each end. One set of terminators is located
close to the DVD-ROMOM drive connector on the DVD-ROM SCSI cable. A second
set of terminators is located close to the internal SCSI connector. The following
figure shows the SCSI bus configuration.
EPCI
ISP2200A
PCI Interface
SERDES
Fiber Engine
IO
Proc
Tx
Rx
Mem
Ctl
SRAM
HDMP0451
Connector
NC
2
0
4
3
Bypass