Intel TIGPT1U Product Specification - Page 63

Functional Description

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Intel® Carrier Grade Server TIGPT1U TPS Midplane Board 7.3 Functional Description The SCSI subsystem on the midplane board is designed to give the end user support for two SCSI hot-plug hard drives. The design enables easy use and replacement of the SCSI hard drives without powering down the system. The following block diagram and functional description will explain how the midplane SCSI subsystem works. 7.3.1 Midplane System Board SCSI Subsystem Block Diagram The block diagram in Figure 7-1 illustrates the general architecture of the midplane board SCSI subsystem. The physical and functional blocks of the SCSI subsystem are shown, with arrows representing buses and signals, and the blocks representing the functional parts of the SCSI subsystem. 68 Pin SCSI connector (from Baseboard) Mid Plane Power/Signal Connector Internal LVD SCSI U320 12 V 5V SCSI Status Signals 12 V 5V SCSI Status Signals SCA-2 Connector Drive 2 SCA-2 Connector Drive 1 LVD Active Terminator SCSI Drive 2 SCSI Drive 1 Figure 7-1. Midplane System Board SCSI Subsystem Block Diagram Revision 1.0 53

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Intel
®
Carrier Grade Server TIGPT1U TPS
Midplane Board
Revision 1.0
53
7.3
Functional Description
The SCSI subsystem on the midplane board is designed to give the end user support for two
SCSI hot-plug hard drives.
The design enables easy use and replacement of the SCSI hard
drives without powering down the system. The following block diagram and functional
description will explain how the midplane SCSI subsystem works.
7.3.1
Midplane System Board SCSI Subsystem Block Diagram
The block diagram in Figure 7-1 illustrates the general architecture of the midplane board SCSI
subsystem.
The physical and functional blocks of the SCSI subsystem are shown, with arrows
representing buses and signals, and the blocks representing the functional parts of the SCSI
subsystem.
Mid Plane Power/Signal
Connector
68 Pin SCSI
connector
(from
Baseboard)
12 V
5 V
12 V
5 V
SCSI Status Signals
SCSI Status Signals
Internal LVD SCSI U320
SCA-2
Connector
Drive 2
SCA-2
Connector
Drive 1
SCSI Drive 2
LVD Active
Terminator
SCSI Drive 1
Figure 7-1. Midplane System Board SCSI Subsystem Block Diagram