
Compaq Ultra SCSI Adapter
For OpenVMS™ VAX™
Installation and User’s Guide
Part Number: EK-KZMCA-IN. V01

2
Compaq Ultra SCSI Adapter
For OpenVMS™ VAX™
Installation and User’s Guide
Part Number: EK-KZMCA-IN. V01
July 21, 1999
Revision/Update Informat i on: This is a new manual.
Compaq Computer Corporati on
Maynard, Massachusetts

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Copyright 1999
First Printing, December 1999
The information in this document is subject to change without notice and
should not be construed as a commitment by Compaq Computer, Inc.
Compaq Computer, Inc. assumes no responsibility for any errors that may
appear in this document.
The software, if any, described in this document is furnished under a license
and may be used or copi e d onl y i n accor d an ce wi th th e ter ms of s uch li ce n se.
No responsibility is assumed for the use or reliability of software or
equipment that is not supplied by Compaq Computer, Inc. or its affiliated
compa nies.
Copyright Compaq Computer, Inc., 1999. All Rights Reserved.
The Reader’s Comments form at the end of this document requests your
critical evaluation to assist in preparing future documentation.
The following are trademar ks of Intr aServe r Technology, Inc.:
ITIpci
TM
, ClusterRead y, In traServer, and the Intr aS erver l ogo.
OpenVMS™ and VAX™ are trademarks of Digital Equipment or Compaq
Computer Corporation, all other trademarks and registered trademarks are the
property of their respective holders.

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FCC NOTICE:
Warning!
This is a Class A product. In a domestic environment this product
may cau se radio interference in which case th e user may be
required to ta ke ade q u ate measure s.
Achtung!
Die ses ist ein Gerät der Funkstörgrenzwer tklasse 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.
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 su ch radi o 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.

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FCC Declaration of Conformity
The IntraServer Technology, Inc. ITIpci Ultra SCSI adapter, model numbers
5xxx comply with the requirements of FCC part 15, class A as defined under
paragrap h 2.909 of these r ules.
This declaration covers products identified with ITI 5140U-V1, ITI 5140UV2, ITI 5140U-V3, ITI 5140U-V4 and ITI 5140U-V5 on the product label.
A copy of the test report substantiating compliance is available on request
from:
Corp orate EMC Mana ger
IntraServer Technology, Inc.
Seven October Hill Road
Holliston, MA 01746

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Table of Contents
Introduction __________________________________ 9
VAX™-SCSI Hardware Covered by This Guide ______ 9
Software Covered by This Guide ___________________ 9
Documentation Organization _____________________ 10
Adapter Specification__________________________ 11
Overview______________________________________ 11
Required Software______________________________ 11
Required VMS Patches ______________________________12
Restrictions____________________________________ 13
Performance___________________________________ 13
Adapter Installation___________________________ 14
Termination ___________________________________ 14
Installing the VAX-SCSI Host Adapter _____________ 15
Preparing your System_______________________________15
DS-KZCCA-AB Installation Procedure__________________16
Removing System Cover ___________________________16
Option Locations VA X 4000™ and MicroVAX 3100™ ___17
DS-KZCCA-AB Configuration Restrictions ______________17
DS-KZCCA-AB Installation Procedure__________________18
Installing the VAX™-SCSI adapter___________________18
Routing the Internal Cables _________________________19
I/O bulkhead installed _____________________________20
DS-KZCCA-BB Installation Procedure__________________21
Removing the VAXStation System Cover______________21
Option Locations VAXStation™_____________________22
Configuration Restrictions__________________________22
DS-KZCCA-BB VAX-SCSI Installation procedure ________22
Installing the DS-KZCCA-BB VAX™-SCSI adapter_____23
Attaching the I/O bulkhead and internal SCSI Cable______24
DS-KZCCA-CB Installation Procedure__________________25
Removing System Cover ___________________________25
Removing the CPU Access Cover ____________________26

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Configuration Restrictions__________________________27
Compaq VAX™-SCSI Installation Procedure_____________27
Cable Routing Example____________________________28
Installing the DS-KZCCA-CB adapter ________________29
DS-KZCCA-DB Installation Procedure__________________30
Removing System Cover ___________________________30
Removing Enclosure Access Cover___________________30
Option Locations _________________________________31
Compaq VAX™-SCSI Installation Procedure___________31
Installing the DS-KZCCA-DB adapter ________________32
Configuring the SCSI Bus______________________ 33
Termination ___________________________________ 33
SCSI IDs ______________________________________ 33
Cabling SCSI Devices ___________________________ 34
Connecting External SCSI Devices _____________________35
Device Drivers for OpenVMS™ _________________ 36
IntraServer’s Digit al Ope nVMS™-VAX ™ driver
features: ______________________________________ 36
Installation ________________________________________37
Existing System Installation_________________________37
VMSINSTAL.COM Installation Example______________38
Testing Your Installation ___________________________41
Appendix A: Specifications _____________________ 43
Mechanical Specifications (DS-KZCCA-AB) ________ 43
Physical Dimensions:________________________________43
Connector and Jumper Configuration Drawing: _________43
Mechanical Specifications (DS-KZCCA-BB)_____________43
Physical Dimensions:______________________________43
Connector and Jumper Configuration Drawing: _________44
Mechanical Specifications (DS-KZCCA-CB) _____________44
Physical Dimensions:______________________________44
Connector and Jumper Configuration Drawing: _________44
SCSI and Ethernet Connections________________________44
Electrical Requirements______________________________45
Power Requirements (Typical):______________________45
Environmental _____________________________________45
Temperature Range (Operating):_____________________45
Relative Humidity Range (Operating): ________________45

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Altitude:________________________________________45
Mechanical (Operating): ___________________________45
Mechanical (Non-Operating) (Transport/Storage): _______46
Flammability:____________________________________46
Functional Requirements/Features: ___________________46
Software: _______________________________________46
Reliability: ______________________________________46
Federal Communications Commission and international
Agencies: _______________________________________47
PACKAGING AND SHIPPING:_______________________47
Glossary of Terms ____________________________ 48
List of Figures__________________________________ 49
List of Tables __________________________________ 49

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Introduction
Compaq’s VAX™-SCSI™ Ultra SCSI host adapters for the
Digital/Compaq’s VAX™ system platform bring state of the art SCSI
performance and connectivity to the VAX™ system line. Compaq’s
VAX™-SC SI adapters allow direct connect ion of Wi de (16 bit ) diffe r ential
UltraSCSI disks, tapes and RAID controllers, increasing overall system
performance and storage capacity.
Thi s m anual wi l l serve as a step by s tep guide during the install ation of your
VAX-SCSI host adapter in your computer.
VAX™-SCSI Hardware Covered by This
Guide
This guide covers the installation and operation of Compaq’s complete line of
VAX™-SCSI Ultra SCSI adapters as follows:
DS-KZCCA-AB Ultra Wide SCSI Differential Adapter for:
VAX™ 4000-100, -100A, -105A, -106A
MicroVA X™ 3100-85, -90, -95, -96
DS-KZCCA-BB Ultra Wide SCSI Differential Adapter for:
VAXstation™ 4000-90, -90A, -96
DS-KZCCA-CB
Ultra Wide SCSI Differential Adapter for:
VAX™ 4000-700A, -705A
VAX™ 4000-600A
VAX™ 4000-500A, -505A
DS-KZCCA-DB Ultra Wide SCSI Differential Adapter for:
VAX™ 4000-108, MicroVAX™ 3100-88,
MicroVA X™ 3100-98
DS-KZMCA-AB*
Ultra Wide SCSI Differential Adapter for :
XMI ba se d s y st ems
*Note: Not available at this time
Software Covered by This Guide
Compaq’s VAX™-SCSI adapters are supported under OpenVMS™-VAX™
beginning with version V5.5-2H4. Software updates and information can be
found at http://www.IntraServer.com.

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Documentation Organization
This manual is organized into the following sections:
Adapter Specification
Adapter Configuration
BIOS and Firmware Configuration
Software Drivers
Configuration Utilities

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Adapter Specification
Overview
The Compaq VAX™-SCSI Wide Ultra SCSI Host is based on the LSI
53C875 SCSI controller chip. This chip includes the following:
•
Onboard RISC processor
•
Internal 512Byte FIFO
•
Internal 4Kbyte Script RAM
•
One interrupt per I/O scripts
IntraServer’s SCSI script implementation on the Symbios (LSI Logic)
53C875 SCSI processor offloads the CPU to deliver higher efficiency and
lower CPU utlization. All low level SCSI functions are completed by
SCRIPTS, which only interrupt the host when an I/O is complete. This
allows the SCSI interface to perform at a higher I/O rate than previous
implementations, which were limited by the processor’s ability to service
frequent interrupts.
Adapters designed for systems with a CDAL bus (Compaq adapters versions
DS-KZCCA-AB, -BB, -CB and -DB) interface directly to the CPU on the
CDAL bus, allowing for maximum I/O bandwidth possible for these systems.
Compaq’s DS-KZMCA-AB adapter (currently under development)
implements the XMI interface, and is intended to be used in XMI based
systems.
The high performance PCI SCSI core is interfaced to the system bus (CDAL
or XMI) by use of a Field Programmable Gate Array. The FPGA provides
arbitration for the PCI devices (SCSI and Ethernet are available options),
interrupt controll a n d data path.
Required Software
IntraServer’s PKW driver, a high performance Wide Ultra SCSI driver is
used as the port driver for the VAX-SCSI implementation. PKW is a port of
IntraServer’s PKWDRIVER which has been fully qualified by digital, and is
now part of the OpenVMS/Alpha distribution (V7.1-2 and V7.2). PKW
interfaces with the high performance scripts on the 53C875 to maximize
SCSI data throughput while minimizing CPU overhead.

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IntraServer has implemented a port naming convention for SCSI devices on
PKWdr iver t o maximize the numbe r of SCSI de vices t hat ca n be use d in a
cluster without being limited by the SCSI naming convention implemented
by OpenVMS. The driver can optionally be set to name the SCSI ports PKW
(default), PKX, PKY, or PKZ. This is done so that in cluster applications the
SCSI devices on one host system will not conflict with the SCSI devices on
another system with the same allocation class.
The in stalla tion procedu re will in quire about the po rt lett er requ ired.
Required VMS Patches
Your VMS system must have all SCSI patches for the version you are
running. These patches are available from Compaq on the internet. If your
system is not up to date, you may experience SCSI device problems.
Check for the latest patch information for your version of VMS at the
foll owi ng T he r e ar e s ome r equ ir e d VM S p atch e s r eq ui red t o cert ai n ver si on s
of VMS required to run the Compaq VAX-SCSI option. These are found on
the support web site at:
http://ftp.service.digital.com/patches/public/vms/vax/
You must have all SCSI related patches for your version of VMS, for
example:
http://ftp.service.digital.com/patches/public/vms/vax/v6.2/vaxscsi01_062.README
If you ar e shadowi ng, you mus t also ha ve all sh adowi ng rel ated p atche s, for
example:
http://ftp.service.digital.com/patches/public/vms/vax/v6.2/vaxshad08_062.README
Install all patches before you install the IntraServer driver kit.

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Restrictions
The following restrictions apply when using the VAX SCSI option in certain
systems. Please adhere to the restrictions below in order to ensure correct
operation:
Model Restriction
5140-V1 Takes up DSH42 (async option) Slot
Cannot be used with the KZQSA
5140-V2 Takes up Turbo-channel adapter slot
5140-V3 Cannot be used with KZQSA
5140-V4 Takes up DSH42 (Async option) Slot
Cannot be used with the KZQSA
5140-V5 TBD
Performance
Compaq’s VAX SCSI adapters bring state of the art Ultra SCSI disks and
tapes to the VAX architecture, and significantly increase the I/O throughput
available.
For single block, sequential I/O (512 bytes) the Compaq adapters are capable
of doing 5000 I/Os per second, running OpenVMS to Ultra SCSI disks.
Large I/O throughput is limited more by the CDAL architecture than by
SCSI. Sequential I/Os of 127 blocks (65024 bytes) achive 10.3Mbytes/sec.
For comparison, large seq uential reads over DSSI achive 3.3MBytes/sec, and
the native narrow SCSI (onboard) achives 3.0Mbytes/sec in equivalent tests.

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Adapter Installation
Termination
Compaq VAX™-SCSI Ultra SCSI Host adapters include on-board
Differential SCSI drivers and termination. The Comapq adapter is always at
the end of the S C SI chain , and the r efore always must termi nate the SCS I bus.
An external SCSI Connector and cabling is provided for connection to
external SCSI devices.
Correct installation of your adapter requires that you first understand the
basic rules of the SCSI bus and correctly configure the termination based on
the position of the external devices on the bus. In order for a SCSI bus to
operate, it must be electrically terminated at both ends.
Your VAX™-SCSI adapter is at the end of the SCSI bus and will always
have termination enabled.
You must pla ce a Differential SCSI terminat or at the LAST device on the
SCSI chain. No other device s on the bus should provid e ter mi nation.

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Installing the VAX-SCSI Host Adapter
Preparing your System
The instructions in this section must be followed regardless of your system
type. Once you have completed these general procedures, skip to the section
below that best describes your system type and configuration.
Before you begin installing your Compaq VAX™-SCSI UltraSCSI adapter,
you must follow the steps below:
1. Back up your files
Follow the instructions in your software documentation to do a
complete backup of your s ystem an d user disks. It is
important that you have a complete backup set, and can restore
your system completely, to prevent possible data loss.
2. Shut down the system
Use your site specific shutdown procedure to shut down your
running system.
3. Turn off the system
4. Unplug the system from the AC power, and unplug all
external cables from the system enclosure, taking note on
where all connections were, so that they can be re-connected
when the installa tion is comple te.