C-3
A Small Computer Systems Interface (SCSI) bus is an IEEE standard
bus for connecting your workstation to internal and external devices
(SCSI devices) running at different speeds, singly or in combination.
Examples of these SCSI devices are floppy disk drives, 4-mm DDS-
format tape drives, CD-ROM drives, and Winchester hard disk drives.
There are two types of SCSI buses available with this workstation – a
single-ended SCSI bus, and a fast, wide SCSI bus. Table C–1 shows
the specification differences between these SCSI buses, and Table
C–2 shows the SCSI addresses, ID numbers, and arbitration priorities
for each.
CAUTION: Do not mix single-ended and fast, wide devices
on any one bus type. Doing this will cause a
system failure.
Table C–1. SCSI Bus Differences
Transfer
Rate
Data Bus
Width
Maximum
Addresses*
Maximum
Cable
Length
Device
Physical
Location
Controller
Embedded or
Plugable
Single-Ended
up to
8 bits
8
6.0 meters
internal and
embedded
up to
5 Mbytes
per second
8 bits
8
6.0 meters
(19.6 feet)
internal and
external
embedded
Fast, Wide
up to
16 bits
16
25 meters
internal and
embedded
up to
20 Mbytes
per second
16 bits
16
25 meters
(82 feet)
internal and
external
embedded
* Address 7 is reserved for host controller use on both buses.
SCSI Bus
Differences
Содержание Visualize J280 - Workstation
Страница 1: ...J 280 Owner s Guide Workstation Systems Group HP Part No A2876 90013 Edition E1196 Printed in U S A ...
Страница 3: ...xii ...
Страница 8: ...xiii Preface ...
Страница 22: ...1 9 Removable Device Bays 2 Figure 1 3 System Unit with Removable Device Door Open ...
Страница 44: ...2 8 5 Gently push the disc tray in until it is closed as shown in Figure 2 4 Figure 2 4 Disc Tray Closed ...
Страница 106: ...A 2 ...
Страница 133: ...B 23 ÅÅ ÅÅ ÅÅ ÅÅ Top View of Floppy Disk Drive 1 2 3 SCSI Terminators Figure B 12 Floppy Drive Terminators ...
Страница 139: ...B 29 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 Figure B 16 Fast Wide Hard Drive Jumper Settings ...
Страница 140: ...B 30 PCB Side of Drive Top Drive Bottom Drive Figure B 17 Replacing Hard Drive Mounting Bracket and Drive Orientation ...
Страница 153: ...B 43 Figure B 25 Replacing the CPU Assembly ...
Страница 168: ...B 58 7 Insert cover in guide and secure with screw Refer to Figure B 38 Figure B 38 Replacing EISA Assembly Cover ...
Страница 172: ...B 62 ...
Страница 194: ...C 22 Figure C 1 Rear Panel SCSI Connectors with Terminators Attached ...
Страница 236: ... ...