Compaq DWZZH User Manual
DWZZH 16-Bit UltraSCSI Hub
User’s Guide
EK–DWZZH–UG. D01
Compaq Computer Corporation
Fourth Edition, November 1998
While Compaq Computer Corporation believes the information included in this manual is correct
as of the date of publication, it is subject to change without notice. Compaq makes no
representations that the interconnection of its products in the manner described in this document
will not infringe existing or future patent rights, nor do the descriptions contained in this
document imply the granting of licenses to make, use, or sell equipment or software in
accordance with the description. No responsibility is assumed for the use or reliability of
firmware on equipment not supplied by Compaq or its affiliated companies. Possession, use, or
copying of the software or firmware described in this documentation is authorized only pursuant
to a valid written license from Compaq, an authorized sublicensor, or the identified licensor.
Commercial Computer Software, Computer Software Documentation and Technical Data for
Commercial Items are licensed to the U.S. Government with Compaq’s standard commercial
license and, when applicable, the rights in DFAR 252.227 7015, “Technical Data-Commercial
Items.”
© 1998 Compaq Computer Corporation.
All rights reserved. Printed in U.S.A.
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StorageWorks, VMS, OpenVMS Registered in the United States Patent and Trademark Office.
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are registered trademarks of the Hewlett-Packard Company. IBM and AIX are registered
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This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used
in accordance with the manuals, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his own expense. Restrictions apply to
the use of the local-connection port on this series of controllers; failure to observe these
restrictions may result in harmful interference. Always disconnect this port as soon as possible
after completing the setup operation. Any changes or modifications made to this equipment may
void the user's authority to operate the equipment.
Warning!
This is a Class A product. In a domestic environment this product may cause radio interference
in which case the user may be required to take adequate measures.
Achtung!
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses
Gerätes Rundfunkstörungen auftreten, in welchen Fällen der Benutzer für entsprechende
Gegenmaßnahmen verantwortlich ist.
Attention
!
Ceci est un produit de Classe A. Dans un environnement domestique, ce produit risque
de créer des interférences radioélectriques, il appartiendra alors à l’utilisateur de
prendre les mesures spécifiques appropriées
.
JAPAN
USA
This equipment generates, uses, and may emit radio frequency energy. The equipment has been
type tested and found to comply with the limits for a Class A digital device pursuant to Part 15
of FCC rules, which are designed to provide reasonable protection against such radio frequency
interference. Operation of this equipment in a residential area may cause interference in which
case the user at his own expense will be required to take whatever measures may be required to
correct the interference. Any modifications to this device - unless expressly approved by the
manufacturer - can void the user’s authority to operate this equipment under part 15 of the FCC
rules.
Contents
Revision Record
About This Guide
………………………………………………………………..
………………………………………………………….…..
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
...................................................................
vii
.ix
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
EK–DWZZH–UG. D01 v
DWZZH 16-Bit UltraSCSI Hub
Figures (Cont’d)
3–1 Running One SWCC Agent for a Particular Storage Subsystem ............................. 3–3
Tables
1–1 DWZZH Hub Functional Specifications..................................................................1–5
2–1 Combinations of UltraSCSI Hubs and Devices in StorageWorks Shelves...............2–8
vi EK–DWZZH–UG. D01
Revision Record
The Revision Record provides a concise publication history of this guide. It lists the guide
revision levels and release dates, and summarizes the changes.
The following revision history lists all revisions of this publication and their
effective dates. The publication part number is included in the Revision Level
column, with the last entry denoting the latest revision. This publication supports
the DWZZH 16-Bit UltraSCSI Hub.
Revision Level Date Summary of Changes
EK–DWZZH–UG. A01 October 1997 Original Release.
EK–DWZZH–UG. B01 April 1998 Change title page;
Add Section 1.2.2 describing
DWZZH–05 Hub;
Change Chapter 2 title from
“Installing” to “Using” and add
procedures for configuring a SCSI
bus using a DWZZH hub.
EK–DWZZH–UG. C01
throughout;
Documents;
in introduction to Chapter 2;
EK–DWZZH–UG. D01 vii
July 1998 Change “SCSI” to “UltraSCSI”
Add documents to list of Related
Modify Figure 1-3;
Add installation recommendation
Add Section 2.6,
UltraSCSI Hubs
Add Chapter 3,
UltraSCSI Hubs;
Add Glossary entries
Placement of
.
SWCC and
.
DWZZH 16-Bit UltraSCSI Hub
EK–DWZZH–UG. D01 October 1998 Change Section 2.1, add CAUTION
after Section 2.1.
Make minor changes to Section 2.3.3;
renumber Section 2.3.3 as Section 2.3.
Renumber Sections 2.3, 2.4, 2.5, and
2.6 as 2.4, 2.5, 2.6, and 2.7,
respectively.
viii EK–DWZZH–UG. D01
About This Guide
This chapter tells you what this User’s Guide does, identifies the audience, describes the
structure and contents (chapter-by-chapter ) briefly, and tells you how to get support and
services from Compaq.
This User’s Guide describes the purpose, function, operation, and use of the DWZZH
UltraSCSI Hub (the DWZZH Hub or the Hub). The DWZZH Hub allows the
connection of up to five ports on one logical SCSI bus.
Visit our Web Site for the Latest Information
Check our web site for the latest drivers, technical tips, and documentation. We
can be found in the technical area of our web page:
http://www.storage.digital.com/
Audience
This guide is intended for end users and for Compaq employees responsible for
configuring, installing, and maintaining the StorageWorks subsystem and its
components.
Related Documentation
You should be familiar with the information contained in the following
documentation:
Document Title Order Number
StorageWorks Solutions Configuration Guide
StorageWorks Solutions Shelf and SBB User’s Guide
StorageWorks SBB Shelf I/O Modules
StorageWorks UltraSCSI Configuration Guidelines
StorageWorks Solutions BA356–SB 16-bit Shelf User’s Guide
Shared Storage Solutions Using UltraSCSI Hubs
Shared Storage for Windows NT Using UltraSCSI Hubs
Shared Storage for DIGITAL OpenVMS Using UltraSCSI Hubs
Shared Storage for DIGITAL UNIX Using UltraSCSI Hubs
EK–SMA17–AN
EK–BA350–CG
EK–BA350–UG
EK–SBBIO–UG
EK–ULTRA–CG
EK–BA356–UG
EK–SMA21–AN
EK–SMA19–AN
EK–SMA20–AN
EK–DWZZH–UG. D01 ix
DWZZH 16–Bit UltraSCSI Hub
Document Structure
This guide contains the following chapters:
Chapter 1. Introducing the DWZZH UltraSCSI Hub
This chapter gives brief functional and physical descriptions of the DWZZH Hub
and lists significant product specifications.
Chapter 2. Using the DWZZH UltraSCSI Hub
This chapter gives the procedures for configuring a StorageWorks SCSI bus
using a DWZZH Hub.
Chapter 3. SWCC and UltraSCSI Hubs
This chapter provides important information concerning the use of StorageWorks
Command Console (SWCC) on SCSI buses that have an UltraSCSI hub. While
the information provided here is important, it is essential that you have read the
SWCC manual and release notes.
Glossary
The Glossary defines terms that are used frequently with StorageWorks and SCSI
bus components.
Support and Services
Who to contact in the Americas
Information and Product Questions: Local Sales Office / StorageWorks Hotline
1-800-786-7967
Installation Support: Contact the Compaq Distributor where the
Storage Solution was Purchased / Local
Compaq Sales Office.
Compaq Multivendor Customer Service (MCS)
Installation Contact the Compaq Customer Support
Center (CSC).
Warranty Contact the Compaq Customer Support
Center (CSC) for warranty service after
solution is installed and operating.
Remedial Contact the Compaq Customer Support
Center (CSC)
Note: A Service Contract is recommended
when the equipment is out of warranty.
Contact the local Compaq Sales Office.
Customer Support Center (CSC) 1 800-354-9000
x EK–DWZZH–UG. D01
About This Guide
Who to contact in Europe
Information and Product Questions, Contact the Compaq Distributor or reseller
Installation Support, and Installation: from whom the Storage Solution was
purchased.
For Warranty Service See the Warranty Card packaged with the
product.
For Remedial Service Contact the Compaq Distributor or reseller
from whom the Storage Solution was
purchased.
Note: A Service Contract is recommended
when the equipment is out of warranty.
Who to contact in Asia Pacific
For all services, contact the Compaq Distributor or reseller from whom the
equipment was purchased.
EK–DWZZH–UG. D01 xi
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