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173
SCSI Connections
SCSI Bus Differences
SCSI Bus Differences
A Small Computer Systems Interface (SCSI) bus is an IEEE standard bus for
connecting your workstation to internal and external SCSI devices running
at different speeds, singly or in combination. Examples of these SCSI
devices are 4-mm DDS-format tape drives, CD-ROM drives, and Winches-
ter hard disk drives.
There are three types of SCSI buses available with this workstation - a nar-
row single-ended SCSI (NSE SCSI) bus, and a fast, wide differential SCSI
(FWD SCSI) bus or an ultra, wide, single-ended SCSI bus. Table 17 shows
the specification differences between these SCSI buses, and Table 18 shows
the SCSI addresses, ID numbers, and arbitration priorities for each.
CAUTION:
Do not mix single-ended, fast, wide and ultra, wide-SE SCSI devices on any one bus
type. Doing this will cause a system failure.
Table 17
SCSI Bus Differences
Transfer Rate
Data Bus
Width
Maximum
Addresses*
Maximum
Cable Length
Device
Physical
Location
Controller
Embedded
or Optional
Single-Ended
8 bits
8
6.0 meters
(19.6 feet)
Internal and
external
Embedded
Up to 5 Mbytes
per second
Fast, Wide
16 bits
16
25 meters
(82 feet)
Internal
and
external
Optional
Up to 20 Mbytes
per second
Ultra, Wide-SE
16 bits
16**
2.0 meters
(6.56 feet)
Internal
and
external
Embedded
Up to 40 Mbytes
per second
* Address 7 is reserved for host controller use on both buses.
** Only 2 external devices allowed (total of 4 devices).
Содержание B132L+
Страница 1: ...Model B132L B132L B160L B180L Owner s Guide HP Part No A4190 90023 Edition E0997 Printed in U S A ...
Страница 15: ...1 Preface ...
Страница 20: ...6 ...
Страница 21: ...7 1 System Overview ...
Страница 40: ...26 System Overview Networking Overview ...
Страница 41: ...27 2 Using Your CD ROM Drive ...
Страница 60: ...46 Using Your CD ROM Drive Troubleshooting ...
Страница 61: ...47 3 Using Your Digital Data Storage DDS Tape Drive ...
Страница 77: ...63 4 Using Your 3 5 Inch Floppy Disk Drive ...
Страница 89: ...75 5 Solving Problems ...
Страница 105: ...91 A Safety and Regulatory Statements ...
Страница 107: ...93 Safety and Regulatory Statements Declaration of Conformity 1 Declaration of Conformity 1 ...
Страница 108: ...94 Safety and Regulatory Statements Declaration of Conformity 2 Declaration of Conformity 2 ...
Страница 111: ...97 Safety and Regulatory Statements Emissions Regulations VCCI Class 2 ITE ...
Страница 117: ...103 Safety and Regulatory Statements Warnings and Cautions Warnings and Cautions ...
Страница 118: ...104 Safety and Regulatory Statements Warnings and Cautions ...
Страница 119: ...105 B Changing Your Workstation s Hardware Configuration ...
Страница 159: ...145 Changing Your Workstation s Hardware Configuration Removing Cache Boards Figure 49 Removing a Cache Board ...
Страница 184: ...170 Changing Your Workstation s Hardware Configuration Changing Your Monitor Type ...
Страница 185: ...171 C SCSI Connections ...
Страница 206: ...192 SCSI Connections Connecting to the SCSI Ports ...
Страница 207: ...193 D The Boot Console Interface ...
Страница 221: ...207 The Boot Console Interface Displaying and Setting Paths Main Menu Enter command path pri sescsi 6 0 ...
Страница 240: ...226 The Boot Console Interface Displaying PIM Information ...
Страница 252: ...238 Glossary ...