Compaq DWZZH manual Very High Density Cable Interconnect

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DWZZH 16–UltraSCSI Hub

UltraSCSI

An improvement in SCSI technology invented in 1993 by the Compaq Computer Corporation StorageWorks Engineering Group. Subsequently the ANSI SCSI Standards Committee issued standard X3T10 for UltraSCSI. The UltraSCSI improvements over Fast SCSI include the following:

Maximum transfer rate increases from 10 MHz to 20 MHz.

VHDCI

Very High Density Cable Interconnect

Glossary–4

EK–DWZZH–UG. D01

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Contents Dwzzh 16-Bit UltraSCSI Hub Fourth Edition, November Japan Page Contents Figures Cont’d TablesRevision Record Revision Level Date Summary of ChangesEK- DWZZH-UG. D01 Audience About This GuideVisit our Web Site for the Latest Information Related DocumentationSupport and Services Who to contact in the Americas Document StructureWho to contact in Europe Who to contact in Asia PacificPage Introducing the Dwzzh UltraSCSI Hub UltraSCSI Hub FunctionsProduct Descriptions Dwzzh 3.5 SBB HubsDWZZH-21 Front Panel Dwzzh 5.25 SBB Hubs Scsi Bus ComponentsProduct Specifications Lists the functional specifications for the Dwzzh HubDwzzh Hub Functional Specifications Cont’d Feature Using the Dwzzh UltraSCSI Hub Large Hub Fair ArbitrationLarge Hub Addressing Configurations Narrow Addressing Setting DWZZH-05 Scsi ID AssignmentsDWZZH-05 Scsi Narrow ID Assignments W1 To enable narrow addressing mode, install a jumper at W1 Fair Arb Disable Front PanelPlacement of UltraSCSI Hubs IndicatorsDetermining the Configuration Selecting the Scsi CablesNot installed Swcc and UltraSCSI Hubs Agents and StorageDwzzh 16-Bit UltraSCSI HUB DWZZH-05 Page Glossary ControllerSBB Scsi end-bus position Very High Density Cable Interconnect