Corvus systems Corvus User manual

CORVUS DISK AND
NETW RK SYSTEMS
FOR APPLE Il
COMPUTERS
*** CORVUS SYSTEMS
**

NOTICE
Corvus Systems, Inc. reserves the right to make improvements in the product
described
in this manual at any time without notice.
DISCLAIMER Of ALL WARRANTIES AND LIABILITY
Corvus Systems, Inc. makes no warranties, either express or implied, with
respect to this manual or with respect to the software described in this manual,
its quality, performance, merchantability, or fitness for any particular purpose.
Corvus Systems, Inc. software is sold or licensed "as is." ln no event will Corvus
Systems, Inc. be liable for direct, indirect, incidental, or consequential damages
resulting from any defect in the software, even if Corvus Systems, Inc. has been
advised of the possibility of such damages. Regarding software supplied by
Apple Computer, Apple Computer,Inc. m~kes no warranties, either expressed
or implied, regarding its merchantability or its fitness for any particular purpose.
Some states do not allow the exclusion or limitation of implied warranties or
liability for incidental or consequential damages, so the above limitation or
exclusion may not apply to you.
This manual
is copyrighted and contains proprietary information. Ali rights are
reserved. This document may not,
in whole or part, be copied, photocopied,
reproduced, translated or reduced to any electronic medium or machine
readable form without prior consent, in writing, from Corvus Systems, Inc.
Revised manuals and update sheets will be published as needed and may be
purchased by writing to Corvus Systems, Inc.
Corvus Systems Information and Publication Department
© 1981 by Corvus Systems, Inc.
2029 O'Toole Avenue
San Jose, California 95131-1375
[phone] TWX 910-338-0226
Ali rights reserved.
The following are regtstered trademarks of Corvus Systems: CONSTELLATION,
MIRROR, MULTIPLEXER and OMNINET. APPLE
III is atrademark of Apple
Computer, Inc. .

Thepurposeofthis manual is to guideCorvus usersthroughthe installation
and initialization procedures for Apple
Il compatible Corvus systems, This
manual does not take the place of the operating system and language
manuals provided by Apple;
it presumes that users have asomewhat
working knowledge of their computer and associated software.
This manual has eight chaptersthat are divided into two majorsections.
The first major section is comprised of Chapters One through Five, which
cover introductory material, hardwareinstallation, and single user software.
The second major section is comprised of Chapters Six through Eight,
which cover network software.
Both major sections are included with the Disk Drive and Disk Server
packages. Only the
second major section is included with the Multiplexer
package.
No matterwhatthe specifie configuration
is, it is recommended thatthis
entiremanual
be read through from starttofinish beforefollowing any ofthe
instructions detailed
in this manual.

Checklist
GENERAL CHECKLIST
Follow the general checklist below for directions to the chapters and
sections needed to configure your system.
•For
ALL Corvus drives:
1) Read Chapter One, specifically the section titled 'Background' on
pages 1-15 through 1-19.
2) Read
'How to Set Up aDisk System' in Chapter Two, pages 2-3
through 2-11.
3) Read and follow the directions in the section titled '1 nstallation
Checkout' in Chapter Two, page 2-11.
4) If you ordered aMirror backup device, read and followthe directions
in
the section titled 'Connecting aMirror to the Disk' in Chapter Two,
pages 2-13 through 2-16.
•For single user systems:
1) Read and follow the directions in the section titled 'Connecting the
Disk to aSingle Computer' in Chapter
Two, page 2-17.
2) Read
Chapter Three then initialize your disk according to the
appropriate sections.
•For Multiplexer networks:
•If you are setting up aMultiplexer on an uninitialized disk:
1) Follow
the directions above for single user systems.
2) Read
Chapter Sixthen initialize your disk with Constellation software
according to the appropriate sections.
3) Read and follow the instructions
in the section titled 'Connecting the
Disk to aMultiplexer' in Chapter Two, pages 2-18 through 2-23.
•If you are upgrading an existing single user system:
1) Check your firmware as described in Chapter Five.
2) Follow steps 2and 3above.
•For
Omninet systems:
•If you are setting up an
Omninet on an uninitialized disk:
1)
Connect the Omninet network as described in Chapter Two and in
the 'Omninet Installation Guide'.
2) Initialize
your disk according to the appropriate sections in Chapter
Three, then according to the appropriate sections in Chapter Six.
iii

G
•If you are upgrading an existing single user system:
1)
Update the firmware on the Corvus drive as described in Chapter
Five.
2) Replace the Corvus utilities with the new utilities provided with your
Omninet system as described in Chapter Six.
3) Initialize
your disk with Constellation software as described in
Chapter Six.
4) Connect the Omninet network as described in Chapter T\I\/o .
.. If you are upgrading an existing Constellation system:
1) Update the firmware on the Corvus drive as described in Chapter
Five.
2) Replace ail utilities on the Corvus drive with the new utilities provided
with
your Omninet system as described in Chapter Six.
3) Run the new Setboot utility and press Cfor C(onst.
4) Connect the Omninet network as described in Chapter Two.
iv

Table of Contents
Chapter One Introduction to Corvus Systems
Overview
Introduction to the Corvus Disk System
1-1
Introduction to the Corvus Mirror 1-9
Introduction to the Corvus Networks
1-11
Background Conventions 1-17
Some Terms 1-19
Cautions
1-21
Chapter TwoHardware Installation
How to Set-up aCorvus Disk System 2-3
Unpacking and Parts 2-3
Drive Features 2-4
Indicator Lights 2-4
Switches 2-4
Mirror Dip Switch
(5 MB only) 2-6
Video Connectors 2-6
Computer and Drive Connectors 2-6
AC Connector 2-8
Service Door (10 and 20
MB drives only) 2-11
Power On Sequence 2-11
Installation Checkout 2-13
Connecting aMirror to the Disk 2-13
Unpacking and Parts 2-13
Installation 2-13
Self-contained 2-13
Stand-alone 2-15
Video Cable
:.. 2-16
Remote Option Cable 2-16
Connecting the Disk to aSingle Computer 2-17
Connecting the Disk to aMultiplexer 2-18
Unpacking and Parts 2-18
Installation 2-18
Host Multiplexer 2-20
Master Multiplexer 2-23
Connecting the Disk to Omninet ;2-24
Unpacking and Parts 2-24
Installation
C'.. 2-24
Setting Unique Device Addresses 2-26
How to Connect the
Disk Server 2-28
v

Restore .
BASICs .
Initialization Utilities .
Pause
1\11I'"'\1I'"'\I'"'\,r"'lIr'\r"Y\r'\ln.,. for .
'-"'1I.A1"1I.A1 and CatV99 .
File Finder .
Mover .
Setboot .
Unlock Volume .
Volume .
to Pascal . .
nlll'"'\II'"'\I'"'\,r"'lI"""II'V"Ir'\!""\'" for .
lr'\t""\,.....D"I ....... 1"Ir'\1I'"'\ of Initial
Basics .
Setboot .
Initial for Pascal or .
11I'"'\1"'1I'"'\11""7ln.~ for Pascal .
Initialization Procedures
Pascal

Software Interface .
of
Commands 4-7
Return
Err0r
L.. ,,/ r"" 1,.... ln,..,. TI ,..., .....
Command ...... '--'LLA •• '-'
Using the Mirror Util
vii

V(rify 4-26
L(st "4-27
ReW(nd 4-27
Q " 4-27
l;héiDt4!r Five
rOLIDU~ ... ;:;inOOt.nali and UDlaatlna
The Diagnostic program 5-5
Q5-5
V)rsn 5-5
C)RC
5-7·
P)arams 5-7
Q5-8
D)rive 5-8
M)ap 5-8
C)onst 5-12
E)xer 5-14
M)aniJal 5-15
Q5-15
S)tatus 5-15
C)ommand ;5-15
P)rep 5-16
8)00t 5-16
U)pdate 5-16
F)ormat 5-1 7
Trouble-shootingguide 5-18
Firmware
Update or Replacement 5-1.9
Checking Firmware Version 5-19
Updating the Firmware 5-20
Formatting
t~e Drive and Replacing the Firmware .. 5-21
Sparing Trac'ks 5-22
Checking the Virtual Drive/Track Offset Table 5-24
Updating the Virtual Drive Table 5-25
Us~ng the VOption of Psysgen 5-26
SOFTWARE
Pascal
Network Ini1Uailizslticln
Mana!~ernell1t Software
Network Initialization Utilities 6-5
Vinit 6-5
I(nit 6-5
D(osvol
~ 6-5
C(onst 6-6
S(em4init 6-7
P(ipes ,'" .
~.~ .. 6-7
Setboot ô-.. 6-7
Replacing the Pascal Utilities 6-8
viii

Replacing the Single User Utilities '6-8
Replacing the Constellation Utilities
'.
Initializing For Pascal or Pascal-BASICs 6-11
Installing Pipes For Pascal 6-19
Installing Semaphores For Pascal 6-20
Adding ADrive to aCorvus Network System 6-21
Network Management 6-26
Volurne Information "6-26
User Table ;6-27
Access Tables and Mount Information 6-27
VMGR-Partitioning the Disk 6-28
......................................... 6-30
....................................... 6-30
...................................... 6-31
...................................... 6-3'1
••••••••••••••••••••• 0 •••• 0 •••••••• 6-31
••••••••••••••••••••••••• o ••••••••••••• 6-32
••••••••••••••••••••••••••••• 0 ••••••••• 6-32
••••••••••••• 0 ••••••••••••••••••• 0o •••••••• 6-32
and Deleting Users o ••••••••••••
User Assignments 6-32
.................................... 6-33
....... '6-34
................................. 6-34
........................................ 6-34
·n ........ "'lr"llr"\r"I aUser's Password and Boot Characteristics
............................................. 6-34
·n I''''lI"''\lI ,r''I User Volume Access 6-35
Q(uit 6-35
M(ount 6-35
.................................... 6-36
........................................ 6-36
...................................... 6-37
Z(ero
~ 6-37
A(dd 6-38
I(nit 6-38
Managing the Pascal system Files ,6-38
Share
"." 6-39
Lock "6-40
Unlock "6-40
Status 6-40
Quit "
6-41
Spool "6-42
.......... "6-42
••••• " ••••••••••••••••••• i •••••••••• 6-43
Q)uit 6-44
C)onsole 6-44
...................................... 6-44
ix

slot ,' .
Network Initialization Utilities .
Constcreate .
Setboot .
ng the BASICs ities .
the
Single User .
the Constellation
Initial
Install
Installing for .
aDrive to aCorvus Network . . .
.. .
ng Users .
........................................6-70
aUser's Password and Boot Characteristics
............................................. 6-70
Access ing aVolume Access Table
"/l',,"",',,,,,,,""',,,,, the BASICs Constellati:on Software .
r"on,,...,Ir"tr"oV"'""\Tlr,n{'"\ with BASICs .
x

xi

1
1
, - 11I1.BIII.liB.
Overvievv'
Introduction to the Corvus Disk System 1-3
Introduction to the Corvus Mirror 1-11
Introduction to the Corvus Networks . . 1-13
Background
Conventions
.. 1-17
SomeTerms 1-19
Cautions ...
.. . .. · · · · . . . . . . . 1-21

1
Checklist
Chapter One Checklist
This chaptercovers introductory material. The checklist below outlines the
sections of this chapter that MUST be read.
eRead the section titled 'Conventions' on page 1-15.
eRead the section titled 'Some Terms' on page 1-17.
eRead the section titled 'Cautions' on page 1-19.

Chap1
1-2

shockresult in ato the main mass
to the
critical shock
is the drive
it or one end less than an inch while
enclosure. These actions
them back down
instrument and must be
"..,. ...... 1"""'""1;-''''"''
Media
Winchester
8ealed clean air filter
Brushless dc Drive Motor
8mall size
No scheduled maintenance
chain up to drives drive three add-on
The Mean Time Between Failures
is calculated to exceed 1
hours. The Mean Time will not exceed
0.5 hours. There is no
6''\Fr~''fC'l.lnTI\.'r~ maintenance on the Corvus Disk Drive.

track access time
access time
Maximum access time
Ume
Data transfer rate
internai control
1er
LJr.,r"\r.vo,. ......... ,.... code
Heads per surface
Data heads
Start time
time
2
4
144
512
20
5.65 Mb
200
rpm ±10 /0
6.25 ms
3ms
25 ms
240 ms
40 ms
960
(5.1 mega HZ clock
MFM
4
30 seconds
7seconds