Compaq DWZZH - Manual (Page 5)

EK–DWZZH–UG. D01 v
Contents
Revision Record……………………………………………………………….. vii
About This Guide………………………………………………………….….. .ix
1 Introducing the DWZZH UltraSCSI Hub
1.1 UltraSCSI Hub Functions ...................................................................................... 1–1
1.2 Product Descriptions............................................................................................... 1–2
1.2.1 DWZZH 3.5" SBB Hubs................................................................................... 1–2
1.2.2 DWZZH 5.25" SBB Hubs ................................................................................. 1–4
1.2.3 SCSI Bus Components...................................................................................... 1–4
1.3 Product Specifications ............................................................................................ 1–5
2 Using the DWZZH UltraSCSI Hub
2.1 Large Hub Fair Arbitration ..................................................................................... 2–1
2.2 Large Hub Addressing Configurations .................................................................... 2–2
2.3 Narrow Addressing Setting ..................................................................................... 2–3
2.4 Front Panel ............................................................................................................. 2–6
2.4.1
Fair Arb Disable ............................................................................................... 2–6
2.4.2 Indicators.......................................................................................................... 2–7
2.5 Determining the Configuration............................................................................... 2–7
2.6 Selecting the SCSI Cables....................................................................................... 2–7
2.7 Placement of UltlraSCSI Hubs................................................................................ 2–7
3 SWCC and UltraSCSI Hubs................................................................... 3–1
Glossary
Figures
1–1 DWZZH–21 or DWZZH-03 3.5" SBB Hub............................................................. 1–2
1–2 DWZZH–21 Front Panel......................................................................................... 1–3
1–3 DWZZH–03 Front Panel......................................................................................... 1–3
1–4 DWZZH–05 5.25" SBB Hub.................................................................................. 1–4
2–1 DWZZH–05 SCSI ID Assignments......................................................................... 2–3
2–2 DWZZH–05 SCSI Narrow ID Assignments ............................................................ 2–4
2–3 DWZZH–05 SCSI Narrow Addressing Jumper ....................................................... 2–5
2–4 DWZZH–05 SCSI Front Panel................................................................................ 2–6