Digital Equipment RL01, RL02 User Manual
EK-RL012-UG
-005
RL01/Rl02
User
Guide
EK-Rl012-UG-005
Rl01/Rl02
User
Guide
Prepared
by
Educational Services
Digital Equipment Corporation
1st Edition, December ]l978
2nd Printing (Rev), September ]l979
3rd Printing (Rev), June
]1980
4th Printing (Rev), October 1980
5th Printing (Rev), September 1981
Copyright @ 1981 by Digital Equipment Corporation
All Rights Reserved
The material
in
this manual is for informational purposes and is subject to change
without notice.
Digital Equipment Corporation assumes no responsibility for any errors which
may appear
in
this manual.
Printed
in
U.S.A.
This document was set on DIGITAL's DECset-8000 computeriized typesetting system.
• Class A Computing Devices:
Notice:
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 computing device pursuant to Subpart J of Part 15 of FCC Rules, which
are designed to provide reasonable protection against such radio frequency
in-
terference when operated
in
a commercial environment. Operation of this equip-
ment
in
a residential area may cause interference
in
which case the user at his
own expense may be required to take measures to correct the interference.
The following are trademarks of Digital Equipment Corporation, Maynard, Massachusetts:
DEC
DECUS
DIGITAL
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UNIBUS
VAX
DECnet
DECsystem-10
DECSYSTEM-20
DECwriter
DIBOL
EduSystem
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MASSBUS
OMNIBUS
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PDT
RSTS
RSX
VMS
VT
CHAPTER 1
1.1
1.2
1.3
1.3.1
1.3.2
1.3.2.1
1.3.2.2
1.3.2.3
1.3.2.4
1.3.3
1.3.3.1
1.3.3.2
1.4
1.5
1.6
CHAPTER 2
2.1
2.1.1
2.1.1.1
2.1.1.2
2.1.1.3
2.1.1.4
2.1.1.5
2.1.1.6
2.1.1.7
2.1.1.S
2.1.1.9
2.1.1.10
2.1.1.11
2.1.2
2.1.3
2.1.3.1
2.1.3.2
2.1.4
2.1.5
2.2
2.3
CONTENTS
Page
INTRODUCTION
PURPOSE
AND
SCOPE
........ ............. ......... ........................................................
1-1
REFERENCE
DOCUMENTS
.............................................................................
1-1
SUBSYSTEM
DESCRIPTION
............................................................................
1-1
RLO 1 /RL02
Disk Drive.... ......... ......... ....... ...... ............ ...... ............................
1-2
RLControllers ............. ; ..................................................................................
1-2
RLII
Controller Description..................................................................
1-2
RLVII
Controller Description...............................................................
1-3
RLSA Controller Description.................................................................
1-3
RLV12 Controller Description...............................................................
1-3
RLOIK/RL02K
Disk Cartridge.....................................................................
1-4
Interchangability ..... ................................................ ............ ...................
1-4
Sector Format.........................................................................................
1-4
SECTOR
LOCATION
..........................................................................................
1-7
BAD
SECTOR
FILE
.............................................................................................
1-8
RLOI/RL02
SPECIFICATIONS
......................................................................... 1-10
INSTALLATION
SITE
PREPARATION
AND
PLANNING
.........................................................
2-1
Environmental Considerations........................................................................
2-1
Cleanliness..............................................................................................
2-1
Space Requirements...............................................................................
2-1
Floor Loading.........................................................................................
2-1
Heat
Dissipation .....................................................................................
2-1
Acoustics... ............... ......... ......................................... ............................
2-2
Temperature ...........................................................................................
2-2
Relative Humidity ..................................................................................
2-2
Altitude..... ......... ........... ................. ............. ................... ...... ........ ........
...
2-2
Power and Safety Precautions ..................... ......... .............. ....................
2-2
Radiated Emissions ................................................................................
2-2
Attitude/Mechanical Shock...................................................................
2-3
Options............................................................................................................
2-3
AC Power Requirements. ...............................................................................
2-5
Standard Applications ...................................................... ..... ....... ..........
2-5
Optional Applications.............................................................................
2-5
Installation Constraints...................................................................................
2-7
Grounding Requirements ......... ....... ................................................ ....... ........
2-7
AC
CABLING
.......................................................................................................
2-8
INSTALLATION -GENERAL
.......................................................................... 2-10
111
CHAPTER
2
2.4
2.5
2.5.1
2.5.2
2.5.3
2.5.4
2.6
2.6.1
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
2.7
2.7.1
2.7.2
2.7.3
2.8
2.8.1
2.8.2
2.8.3
2.8.4
2.9
2.9.1
2.9.2
2.9.3
2.10
CHAPTER 3
3.1
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.3
3.3.1
3.3.2
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
Page
INSTALLATION
(Cont)
RLII
CONTROLLER
INSTALLATION
...........................................................
2-11
RLV11
CONTROLLER
INSTALLATION
........................................................ 2-16
Bus Interface Module ..................................................................................... 2-16
Drive
..................................................................... ' .............................
2-18
Module Slot Location.....................................................................................
2-19
Module Installation.................................................................................. .......
2-20
RLV12
CONTROLLER
INSTALLATION
........................................................
2-21
Introduction ....................................................................................................
2-21
Device Address Selection ...............................................................................
2-21
Bus Selection...................... .................................................................... ........
2-26
Interrupt Vector.......................................................... ....................................
2-26
Interrupt Request Level .................................................................................
2-26
Memory Parity Error Abort Feature ...................................... , .................
,.
.....
2-26
Other Jumpers ................................................................................................
2-27
Installation..... ....... .............. ...................................................... ......................
2-27
Acceptance Testing........................................................................................
2-27
RL8A
CONTROLLER
INSTALLATION
...................................................
,.
.....
2-28
Introduction............ ........................................................................................
2-28
Module Slot Location .....................................................................................
2-28
Module Installation. ........................................................................................
2-28
RLOI/RL02
DISK
DRIVE
INSTALLATION
.................................................... 2-30
Unpacking and Inspection .......................................................................
,.
..... 2-30
RL01/RL02
Disk Drive Unit Mounting ........................................................ 2-32
Drive Prestartup Inspection ............................................................................
2-37
Drive Startup Operation Check ...................................................................... 2-39
CONFIDENCE
TESTING
................................................................................... 2-39
RLI1-Based Diagnostics .................................................................................
2-40
RLVI1-/RLVI2-Based Diagnostics ...............................................................
2-43
RL8A-Based Diagnostics ................................................................................
2-43
USE
OF
THE
M9312 BOOTSTRAP
WITH
AN
RLII
SUBSySTEM
.............. 2-46
OPERATOR'S GUIDE
INTRODUCTION.................................................................................................
3-1
CONTROLS
AND
INDICATIONS
....................................................................
3-1
Power
ON
/OFF
Circuit Breaker....................................................................
3-2
Run/Stop
Switch with LOAD Indicator ........................................................
3-2
UNIT
SELECT
Switch with READY Indicator ...........................................
3-3
FAULT Indicator .............................................................. .............................
3-3
WRITE
PROTECT
Switch and Indicator .....................................................
3-3
OPERATING
PROCEDURES.............................................................................
3-3
Cartridge Loading and Drive Startup Procedure ...........................................
3-4
Cartridge Unloading Procedure......................................................................
3-6
OPERATOR
MAINTENANCE...........................................................................
3-6
Introduction....................................................................................................
3-6
Professional Cartridge Cleaning.....................................................................
3-6
User Cartridge Cleaning.................................................................................
3-6
Spindle Assembly Cleaning ............................................................................
3-7
CARTRIDIGE
CARE
SUMMARy.....................................................................
3-7
lV
CHAPTER 4
4.1
4.1.1
4.1.2
4.1.3
4.2
4.2.1
4.2.2
4.2.3
4.2.3.1
4.2.3.2
4.2.3.3
4.2.4
4.2.4.1
4.2.4.2
4.2.4.3
4.2.4.4
4.2.5
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
4.3.8
4.4
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.4.6
4.4.7
4.5
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.6
4.7
4.7.1
4.7.2
4.7.3
4.7.4
4.7.5
4.7.6
Page
II-FAMILY PROGRAMMING INFORMATION
GENERAL
DESCRIPTION
................................................................................
4-1
RL
11
Controller Description.. .................................... .............. ..... .................
4-1
RLVII
Controller Description .......................................................................
4-1
RL V 12
Controller Description ...................................... ...... ............... ............
4-1
ADDRESSABLE
REGISTERS............................................................................
4-1
Control Status Register ..................................................................................
4-2
Bus Address Register......................................................................................
4-5
Disk Address Register ....................................................................................
4-5
DA Register During a Seek Command ..................................................
4-5
DA Register During Read or Write Data Command.............................
4-6
DA Register During A Get Status Command........................................
4-7
Multipurpose Register ....................................................................................
4-8
MP
Register After a
Get
Status Command ...........................................
4-8
MP
Register After a Read Header Command ....................................... 4-10
MP
Register During
Read/Write
Data Commands ..............................
4-11
Bus Address Extension Register.............................................................
4-11
Register Summary ........................................................................................... 4-12
CONTROLLER
COMMANDS
........................................................................... 4-14
No-Op
(RLll)
or Maintenance
(RLVll)
- Function Code 0 ........................ 4-14
Write Check - Function Code 1 ..................................................................... 4-15
Get Status - Function Code 2 ......................................................................... 4-16
Seek - Function Code 3 ................................. .................................................. 4-16
Read Header - Function
Code 4 .................................................................... 4-16
Write
Data
- Function Code 5 ........................................................................ 4-16
Read Data - Function
Code 6 ........................................................................
4-1
7
Read Data Without Header
Check - Function Code 7 .................................. 4-17
CSR
ERROR
CODE
DEFINITIONS
.................................................................. 4-17
Operation Incomplete
(OPI) ........................................................................... 4-17
Data
CRC
(DCRC) or Write Check (WCE) ................................................. 4-17
Header
CRC
(HCRC)
.................................................................................... 4-17
Data
Late (DLT) ............................................................................................ 4-17
Header
Not
Found
(HNF)
.............................................................................. 4-18
Non-Existant Memory
(NXM)
....................................................................... 4-18
Memory Parity Error (MPE) .......................................................................... 4-18
OPERATIONAL
CONSIDERATIONS
.............................................................. 4-18
Interrupt ......................................................................................................... 4-18
Seek Operation.............. ......... ........ ................ ................................................ 4-18
Overlapped Seeks ........................................................................................... 4-18
Data Transfer .................................................................................................. 4-19
Recovery of
Data
with Bad Headers .............................................................. 4-19
Non-Interchangability of
RLOIK/RL02K
Disk Cartridges .......................... 4-19
ERROR
RECOVERY
........................................................................................... 4-19
DIFFERENCE
SUMMARY
(RK05
AND
RLOI
/RL02)
....................................
4-21
Spiral
Read/Write
or Mid-Transfer Seeks .....................................................
4-21
Implicit Seeks Versus Explicit Seeks .............................................................
4-21
Recalibrate ..................................................................................................... 4-22
Bad Sector File............................................................................................... 4-22
Reformatting .................................................................................................. 4-22
Seek Interrupt ................................................................................................. 4-22
v
CHAPTER 5
5.1
5.2
5.2.1
5.2.1.1
5.2.1.2
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.7.1
5.2.7.2
5.2.8
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
5.3.8
5.3.9
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4
..
6
5.4
..
6.1
5.4.6.2
5.4
..
7
5.5
5.6
5.6
..
1
5.6
..
2
5.6
..
3
5.6.4
5.6.5
5.6.6
APPENDIX A
A.1
A.2
Page
RL8A PROGRAMMING INFORMATION
GENERAL
DESCRIPTION
................................................................................
5-1
ADDRESSABLE REGISTERS............................................................................
5-2
Command Register A .....................................................................................
5-2
Command Register A During a Seek Command ...................................
5-2
Command Register A During Read or Write Data Command ..............
5-3
Command Register B......................................................................................
5-4
Break Memory Address Register...................................................................
5-6
Word Count Register......................................................................................
5-6
Sector Address Register.................................................................................
5-6
Error Register.................................................................................................
5-7
Silo Data Buffer..............................................................................................
5-8
Data Buffer Contents Following a Get Status Command ......................
5-9
Silo Data Buffer Contents Following a Read Header
Command ...... ...... ....... ...... ...... .................. ..... .............
.........
........... .........
5-9
Register Summary..........................................................................................
5-9
CONTROLLER
COMM.ANDS ...........................................................................
5-9
Maintenance Command ................................................................................... 5-16
Reset Command ............................................................................................. 5-16
Get
Status Command ..................................................................................... 5-16
Seek Command................................................................................................
5-1
7
Read Header Command.................................................................................
5-17
Write Data Command ....................................................................................
5-17
Read Data Command .....................................................................................
5-18
Read Data without Header Check Command ................................................
5-18
Maintenance Bit ....... ........... .................................... ........................ ...............
5-18
OPERATIONAL
CONSIDERATIONS
.............................................................. 5-20
8-Bit Mode Versus 12-Bit Mode ..................................................................... 5-20
Interrupt ......................................................................................................... 5-20
Seek Operation ............................................................................................... 5-20
Overlapped
Seeks ........................................................................................... 5-20
Recovery of Data with Bad Headers .............................................................. 5-20
Non-Interchangability of Disk Cartridges ....................................................
:.
5-21
RLOIK/RL02K
.....................................................................................
5-21
RL8A/RL11/RLV11/RLV12
..............................................................
5-21
Use of Two RL8A Controllers....... ................ ....... .............. .......... ..................
5-21
ERROR
RECOVERY ............................................................................................
5-21
DIFFERENCE
SUMMARY
(RK05 AND RLOI
/RL02)
.................................... 5-22
Spiral
Read/Write
or Mid-Transfer Seeks ......................................................
5-23
Implicit Seeks Versus Explicit Seeks ..............................................................
5-23
Recalibrate
...
.................... ............................. ......... ..... .............................. .....
5-23
Bad Sector File.................................................. ........ .....................................
5-23
Reformatting... .................................................... ..... ............................. .........
5-23
Seek Interrupt .................................................................................................
5-23
RLll
CONFIGURATION AND INSTALLATION CONSIDERATIONS
SPC
CONSIDERATIONS
..................................................................................... A-I
CONFIGURATIONS
CONSIDERATIONS
...................................................... A-I
vi
FIGURES
1-1
1-2
1-3
1-4
1-5
1-6
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
2-15
2-16
2-17
2-18
2-19
2-20
2-21
2-22
2-23a
2-23b
2-24
2-25
2-26
2-27
3-1
3-2
3-3
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
5-1
5-2
Page
Typical
RLOI/RL02
Mass Storage Subsystem Configuration ..............................
1-2
RLO 1 /RL02
Disk Drive......... ............ .......... ....... ..... .......... .................... ................
1-3
RLOIK/RL02K
Disk Cartridge Format ................................................................
1-5
Access Method for Sequential Transfers ................................................................
1-7
Sector Relocation. .............. .....................................................................................
1-8
Bad Sector File Format...........................................................................................
1-9
RLOI/RL02
Disk Drive - Rear View.....................................................................
2-5
Approved Electrical Plugs and Receptacles........................................... ........ ........
2-6
Power Panel Grounded Building Frame.................................... .............. ......... ......
2-7
Power Panel Grounded To Metal Plate ..................................................................
2-8
Typical 60
Hz
Power System....... .......................................... ..................... ............
2-9
Typical 50
Hz
Power System.................. ................................................................. 2-10
Split Phase
(2-phase) Power System ....................................................................... 2-10
Three Phase Y Power System................................................................................. 2-10
RL
11
Component Layout ........ ............ ......... ........ ..... ............. ................................
2-11
RLll
Base and Vector Address Jumper Configuration .......................................... 2-13
RLll
Priority Jumper Assembly Connections ........................................................ 2-14
RL
11
Controller Installation.. ........... ......... ........ .................. ................................... 2-15
RLVll
Bus Interface Module (M8014) (Component Side) ................................... 2-17
RL V 11
Base Address Switch Settings .................................................................... 2-18
RL V 11
Vector Address Switch Settings ................................................................. 2-18
RLVll
Drive Module (M8013) .............................................................................. 2-19
H9273 Backplane Grant Priority Structure ............................................................ 2-20
RL V 12
J urn per Locations....................................................................................... 2-24
RLV12 Device Address Format. ............................................................................. 2-25
RLV12 Format Interrupt Vector ............................................................................ 2-26
RL8A Jumpers........................................................................................................ 2-29
H950 Shipping Package ..........................................................................................
2-31
RLOI/RL02
Cabinet Installation ........................................................................... 2-32
RLOI/RL02
Cabinet Installation ........................................................................... 2-33
RLO 1 /RL02
Disk Drive - Exposed Drive Logic Module ....................................... 2-34
RLOI
/RL02
- Covers Removed ............................................................................. 2-35
RLO 1 /RL02
Disk Drive - Rear View................ ...... .................. .............. ............... 2-36
RLOI/RL02
Disk Drive - Front View .................................................................... 2-37
RLOI/RL02
Disk Drive - Front View....................................................................
3-1
RLOI/02
Disk Drive - Rear View.......................................................................... 3-2
Cartridge Loading
Procedure..... .................. ................... ...... .................................
3-5
CS
Register ............................................................................................................. 4-2
BA Register.............................................................................................................
4-5
DAR
Contents to Execute a Seek Command .........................................................
4-5
DAR
Contents During a
Read/Write
Data Command .......................................... 4-6
DAR
Contents to Execute a Get Status Command................................................
4-7
MPR
- Following a Get Status Command........ ...... ......... .......................................
4-8
MPR
- Following a Read Header Command ......................................................... 4-10
MPR
- Used as a Word Counter ............................................................................
4-11
BAE Register .......................................................................................................... 4-12
Register Summary.................................................................................................. 4-12
Command Register A During a
Seek Command....... ......... .................. ...... ............ 5-3
Command Register A During a
Read/Write
Data
Command ...............................
5-4
Vll
Page
FIGURES
(Coot)
5-3
5-4
5-5
5-6
5-7
5-8
5-9
5-10
5-11
5-12
TABLES
I-I
1-2
1-3
1-4
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
5-1
5-2
5-3
Command Register B..............................................................................................
5-4
Break Memory Address Register............................................................................
5-6
Word Count Register..............................................................................................
5-6
Sector Address Register... .......................................................................................
5-7
Error Register.........................................................................................................
5-7
Silo Buffer for Status Word I ......................................................... '........................
5-9
Silo Buffer for Status Word 2 .................................................................................
5-9
Silo Buffer for Header Words ................................................................................. 5-12
Register Summary..................................................................................................
5-13
Maintenance Mode Bit................................. ..... .............
...
........... ...... ...... ..... ......... 5-19
Reference Documents ............................................................................................. I-I
RLO I /RL02
Disk Drive Physical and Environmental
Specification ...........................................................................................................
1-10
RLO I /RL02
Disk Drive Operational Specifications...... ........... .... ................... ......
1-13
RLO I K/RL02K
Disk Cartridge Specifications ....... .......... ...... ......... ............ .........
1-14
Saleable RLOI
/RL02
Subsystem Options .............................................................
2-3
Saleable Cabinet Options: (Includes Skins, Doors, Covers,
Trim, and
Power Controllers) ......................................................... '........................
2-4
Address Selection............ ....... ........... ....... ................................ ............................... 2-22
Diagnostic Catalogs and Indexes ..... ...................... ...................... ..................... ......
2-40
RLII-Based Diagnostics ......................................................................................... 2-40
RLII
Diagnostic Kit Numbers ...............................................................................
2-41
RL
II
Diagnostic Components.................. ................. ..... .......... ..... ............ .... .........
2-41
User Documents...................................................................................................... 2-42
RLVII
/RLVI2
Diagnostic Kit Designations .........................................................
2-43
RL8/RLOI Diagnostic Kits ....................................................................................
2-43
RL8/RLOI Diagnostic Components ....................................................................... 2-44
RL8A Diagnostic
Kits.
....... ....................... ................. ............................................
2-45
RL8/RL02
Diagnostic Components .......................................................................
2-45
Controller Addressable Registers................... ........... ......... ................ ....... .... ......... 4-2
Control Status Register Bit Description .................................................................
4-3
Disk Address Register Bit Description for Seek Commands.................................. 4-6
Disk Address Register Bit Description for Data Transfer
Commands....... ........ ....... ....... ..... ...... .....
...
..... ......... ...... ..... ..... .... ..... ...... ..... ....... .....
4-7
Disk Address Register Bit Description for Get Status
Commands............. ....... ......... ...... ..... ...... ...... ...... ..... ..... .... ............... ..... ...... ....... .....
4-7
MP
Register Bit Description for Get Status Commands........................................
4-8
MP
Register Bit Description for Read Header Commands .................................... 4-10
MP
Register Bit Description for Data Transfer Commands ..................................
4-11
RLII
/RLVII
/RLVI2
Controller Commands ....................................................... 4-14
Errors.
...
........ ....... ............. ........ ..... ..... ...... ...... .... ..... .......... ...... .... ..... ........... ..... ...... 4-20
RL8A Instruction Set.............................................................................................
5-1
RL8A Controller Commands .......................................................... ,........................
5-2
Command Register A Bit Description for Seek Commands...................................
5-3
viii
Page
TABLES
(Cont)
5-4
5-5
5-6
5-7
5-8
5-9
Command Register A Bit Description
for
Data Transfer
Commands............ ..... ........ ......... ................. ........ ........... ............... ................. ........
5-4
Command Register B Bit Description.....................................................................
5-5
Error
Register Bit Description........... .............................................................. .......
5-7
Silo Data Buffer
Word
1 of Get Status Command ................................................. 5-10
Silo
Data Buffer
Word
2 of Get Status Command .................................................
5-11
Errors
...................................................................................................................... 5-22
ix
1.1
PURPOSE AND SCOPE
CHAPTER 1
INTRODUCTION
This manual provides information on the capabilities, installation, operation, and programming of the
RLOI/RL02
disk subsystem. A basic subsystem
is
comprised of one
RLll,
RLVll,
RLVI2,
or RLSA
controller and up to four RLOI or
RL02
disk drives.
This manual
is
intended primarily for operating and programming personnel. Service should be performed only by qualified Digital field engineering and maintenance personnel. A prerequisite for understanding this manual
is
a basic knowledge of PDP-S
and/or
PDP-II
processors and peripherals.
1.2 REFERENCE DOCUMENTS
Table
1-1
lists the documents
that
provide the information necessary for a complete understanding of
the function, theory, and maintenance of
the
RLO 1 /RL02
disk drives and the controllers. The
UNIBUS
and
LSI-II
Bus are described in the
PDP-II
Bus Handbook (EB-17525). The
OMNIBUS
is
described in the PDP-8A Miniprocessor User's Manual (EK-SA002-MM).
Table
1-1
Reference Documents
Title
RLOI/RL02
Disk Drive Technical Manual
RLOI Disk Drive Illustrated Parts Breakdown
RL02 Disk Drive Illustrated Parts Breakdown
RLOI/RL02
Disk Subsystem Preventive
Maintenance Manual
*
RLO 1 /RL02
Disk Drive Pocket Service Guide
RLII
Controller Technical Description Manual
RLVII
Controller Technical Description Manual
RLSA
OMNIBUS
Controller Technical Manual
RLV12 Disk Controller User's Guide
RL V 12
Controller Technical Description Manual
Document No.
EK-RLOI2-TM
EP-OOO
16-
IP
EP-OOO
16-
IP
EP-OOOOS-PM
EK-RLOI2-PG
EK-ORLII-TD
EK-RLVI1-TD
EK-ORLSA-TD
EK-RLVI2-UG
EK-RLVI2-TD
•
This document
is
only available to Digital Equipment Corporation Service personnel.
1.3 SUBSYSTEM DESCRIPTION
The
RLOI/RL02
mass storage subsystem
is
based on the
RLOIK/RL02K
disk cartridges, the
RLOI/RL02
drive unit(s), and an appropriate controller such as the
RLII
(PDP-II),
RLVII
or
RLV12
(LSI-II),
or
RL8A
(PDP-S). The basic subsystem
is
illustrated in Figure
1-1.
1-1
•
UNIBUS
•
OMNIBUS
•
Q-BUS
CONTROLLER
RL11
CU/DRIVE
INTERFACE
RLV11
RLV12
RL8A
•
•
READ
DATA
•
STATUS
• SECTOR PULSES
• GET
STATUS
• SEEK
•
WRITE
DATA
Figure
1-1
Typical RLO]
/RL02
Mass
Storage
Subsystem
Configura tion
1.3.1 RLOljRL02 Disk Drive
(DRIVE
0)
o
(DRIVE 1)
01
(DRIVE
2)
01
(DRIVE
3)
0]
CZ-1007
The
RLOI
/RL02
drive unit
is
built into a chassis
that
slides
out
of
the
cabinet
to allow
operator
access
to
the
top cover for loading and unloading
of
the
disk cartridge.
If
the
stops on
the
slide
are
manually
released,
the
chassis
can
be
pulled
farther
out
so
that
the
rear
top cover
can
be
removed for servicing.
The
front panel contains.
operator
controls
and
indicators.
The
chassis contains a spindle, two
read/write
heads mounted on a positioner, logic modules, a power
supply with
an
ac
power cord and
circuit
breaker, a closed-loop clean
air
system, a cooling
air
syste:m,
appropriate
safety interlocks,
and
connectors for
the
I/O
cable(s).
The
drive
unit
is shown in Figure 1-2.
The
RL02
drive unit has a label reading
"RL02"
on
the
front panel.
The
RLOI drive
currently
does not
have a label identifying it as
an
RLO
1.
1.3.2 RL Controllers
There
are
four controllers available for
the
RLO 1
/RL02
subsystem. All
can
handle
up
to four drives
and
all feature
Direct
Memory
Access
(DMA)
operation.
1.3.2.1
RLl1
Controller Description -
The
RLII
controller consists
of
a single, hex-height
Small
Peri-
pheral Controller
(SPC)
module designated M7762.
It
is
used to interface
the
drive with
the
PDP-II
UNIBUS.
The
data
is
formatted
in 16-bit words.
1-2
Figure
1-2
RLOI/RL02
Disk Drive
1.3.2.2 RLVII Controller Description - The
RLVII
controller consists of two quad-height modules
designated
M8013 and M8014. This controller interfaces the drive with the
LSI-II
Bus. The data
is
formatted in 16-bit words. The controller can handle any combination of up to four RLOI
/RL02
drives.
1.3.2.3 RL8A Controller Description - The RL8A controller consists of a single, hex-height module
designated M8433.
It
is
used to interface the drive with the PDP-8 OMNIBUS. The data can be formatted in either 8-bit bytes or 12-bit words. This controller has a jumper-determined choice of handling
RLOI or RL02 drives. However, in the RL02-jumpered configuration,
it
can handle any combination of
up to four
RLO 1 /RL02
drives.
1.3.2.4 RLV12 Controller Description - The RLV12 controller consists of a single, quad-height mod-
ule designated
M8061.
It
is
used to interface the drive with either the extended
LSI-II
Bus or the
standard
LSI-II
Bus. A jumper designates the 22-bit or 18-bit addressing scheme. The data
is
for-
matted in 16-bit words. This controller can handle any combination of up to four
RLO 1 /RL02
drives.
1-3
1.3.3 RLOIK/RL02K Disk Cartridge
The
RLO
1 K or RL02K
is
a removable, top-loading 5440-type disk cartridge
that
is
formatted in a man-
ner unique to the
RL01/RL02
subsystem. Both cartridges contain a single platter. The RL01K cartridge has a capacity of 5.2 megabytes of user data, and the RL02K cartridge holds 10.4 megabytes of
data. Both sides of the platter are used for data. There are 256 tracks on each
RL01K platter surface
and 512 tracks on each
RL02K platter surface. Each track
is
divided into 40 sectors. Each sector
con-
tains 256 bytes of data. The last track of the last surface
is
reserved for the cartridge serial number and
bad sector information. Head positioning servo information and header information are prerecorded at
the factory and cannot be reformatted in the field. This information, along with the data,
is
read by
the:
read/write heads but the internal logic of the drive unit protects the servo and header information
from.
being overwritten.
1.3.3.1 Interchangability - The RL01K and RL02K disk cartridges are not functionally inter··
changable although they are physically interchangable.
It
is
possible to mount an RL01K cartridge
Ont
an RL02 drive, for example,
but
proper operation will not occur. An RL01K cartridge written on
an.
RL01 unit can be read on any other RLOI unit even if
that
unit
is
controlled by a different type of
controller. The limitation to this interchangeability
is
that
if an RL8A controller
is
used to write data.
and the cartridge
is
to be used by an II-Family controller, the RL8A must use the 8-bit byte mode of
operation.
An
RL02K cartridge written on an RL02 unit can be read
on
any other RL02 unit (assuming the
conditions mentioned above).
1.3.3.2 Sector Format - As shown in Figure 1-3, each sector contains:
• Servo information for head positioning,
• Header (address) information,
• Data (128 words of
16
bits or 256 bytes of 8 bits or 170 words of
12
bits).
Only the data portion of a sector can be written by the user. The servo and header information
is
pro.-
tected by the drive logic and controller to ensure disk integrity and cannot be written in the field.
Each sector starts with a sector pulse
that
is
produced by a sector transducer mounted on the unit.
It
senses the sector notches
that
are machined into the hub of the disk cartridge.
During the time
that
the sector notch passes by the sector transducer, the heads detect two servo pulse
bursts
(Sl
and S2)
that
are prerecorded
on
the platter. These servo bursts are used by the drive logic
for head positioning.
The header follows the servo pulse bursts.
It
consists
of:
• A preamble of three words -
47
"0"
bits and one
"1"
bit,
• A word that contains the address - sector, head, and cylinder,
• A word of all zeros,
• A word containing information created by the Cyclic Redundancy Check (CRC) logic,
• A one-word postamble of all zeros.
]-4
-
I
V.
I
....
----------------
6251£5
---------------.-.11
I I
.-62.51£5
....
I
I 1 I
J
SECTOR I I
PULSE
I •
:.
I I
>0--
-----------------,
__
'
__________________
l
.;"/
--------
---
......
-
......
-
....
"
PREAMBLE
ADDRESS
47 ZERO BITS
11
16
BITS
./
./
SECTOR
HEAD
SIX BITS
ONE
BIT
L
lSB
ZEROES
16 ZERO BITS
.....
.......
CYLINDER
NINE BITS
CRC
16 BITS
--
POSTAMBlE
16 ZERO BITS
16
BITIWORD
MODE
S BIT/BYTE
MODE
12 BITIWORD
MODE
Figure
1-3
RLOIK/RL02K Disk Cartridge Format
-
PREAMBLE
47
ZERO BITS
--
---
-
WORD 0
WORD 1
16
BITS
16
BITS
BYTE BYTE
I
0
1
I
SBITS
SBITS
·.If
I
WORD
0 WORD 1
I
12 BITS
12 BITS
t
L
MSB
I
lSB
..
DATA
CRC
POSTAMBlE
11
..
16
BITS
16
ZERO BITS
2048 BITS
.IL
.
-
......
"'-
......
I
I
WORD 126
WORD 127
.1
S.
16 BITS
16
BITS
f
•
I
BYTE
BYTE
J
254 255
8
BITS
8
BITS
,
,
WORD
168
WORD
169
UN-
USED
I
12
BITS
12
BITS
8 BITS
f
CZ·2C127
The user writeable data area
follows
the header.
It
consists
of:
• A preamble of three words -
47
"0"
bits and one
"1"
bit,
• Data (128 words of
16
bits or 256 bytes of 8 bits or
170
words of
12
bits),
• A word containing CRC-generated information,
• A one-word postamble of all zero bits.
Following each sector
is
a period of idle tirne that
is
simply a wait for the next sector pulse.
In addition to the data tracks, there are tracks both inside and outside of the data area that contain
unique servo signals that define those areas as guard bands.
If
the read/write heads attempt to enter
a.
guard band, the drive logic causes the positioner to retreat from the guard band and return to data
are:a.
The disk has a nominal rotational speed of 2400 rev/min. Therefore, the time for one revolution
is
25
milliseconds. Since the revolution
is
divided into
40
sectors, the duration of each sector
is
625
nlicro·,
seconds. This 625 microsecond period
is
divided into non-data (sector pulse,
headel!",
idle time) time
and.
data time. The data time period
is
500 microseconds. Thus, the data
is
transferred in 500
bursts that occur every 625 microseconds.
For 16-bit word mode there are
128
words of data in a sector
so
the peak transfer rate
is
3.9
n(licro··
seconds per word and the average transfer rate
is
4.9 microseconds per word.
For 8-bit bytes (256 bytes per sector), the peak transfer rate
is
1.9
microseconds per byte and the aver
..
age transfer rate
is
2.4 microseconds per byte.
For 12-bit word mode
(170 words per sector), the peak transfer rate
is
2.9 microseconds per word and
the average transfer rate
is
3.7
microseconds per word.
1-6
1.4 SECTOR LOCATION
The
RLOIK/RL02K
disk cartridges do not have a physical index notch (occurring once per revolution)
machined into the hub as some cartridges do.
The
controller determines the rotational position
of
the
disk cartridge by reading, from the header,
the
sector address as well as the head (surface) and cylinder
(track) addresses. Thus, the cartridge does not need a physical index.
The
sectors
are
relocated to opti-
mize the
data
transfer
rate
when it becomes necessary to perform a seek during a
data
transfer.
A head switch to the other surface is considered a seek because the
RLOI/RL02
subsystem uses servo
information
that
is
recorded on each track.
The
newly selected head will position itself over the center
of
the
track. There
is
no hardware-controlled implicit seek on the
RLOI/RL02
subsystem. All seeks,
including spiral (mid-transfer) seeks, must be programmed into the software.
The
correct head must be
selected and positioned over the correct
track
by a seek operation before the software
can
initiate a
data
transfer.
When
the end
of a track
is
reached and the
data
transfer has not been completed, the software must do
one
of
two things.
It
must switch to the head
that
is
over the corresponding
track
on
the
other surface
(6.5 milliseconds average, 8 milliseconds maximum) or the software must issue a seek to the next cylinder (15 milliseconds).
If
the head is to be switched also, the seek
and
the head switching are normally
combined.
Once the unit has completed
the
seek operation, the software
can
continue the
data
transfer.
To reduce
the
rotational latency following a head switch seek, surface one is offset by
17
sectors from
surface zero.
The
eight milliseconds head switch corresponds to
13
sectors
of
this offset and the addi-
tional four sectors allow for software overhead.
To reduce the rotational latency following a one cylinder seek (with head switch), surface 0
of
a cylin-
der is offset by 29 sectors from surface 1
of
the previous cylinder.
The
15
millisecond seek time takes
24 sectors
of
this offset
and
five more sector times are allowed for software overhead.
These two offset patterns are illustrated in Figures
1-4
and
1-5.
SURFACE
"0"
(HDS = 0)
SURFACE
"1"
(HDS
-1)
CYL
=0
I
1
2
I
Figure
1-4
Access Method for Sequential
Transfers
1-7
3
I
..
TO
SPINDLE
MA-0567
Sp·
3
(PHYSICAL
SECTOR)
NOTE:
NUMBERS
IN
BLOCKS
REFER
TO
HEAD
1.
Figure
1-5
Sector Relocation
1.5
BAD
SECTOR FILE
INDEX
MA-0579
The Bad Sector File
is
a list of all bad sectors found
on
an
RLO 1 K/RL02K
disk cartridge.
It
also contains the cartridge serial number. The operating system uses this information to avoid allocating bad
sectors to a user's files.
If
there
is
an error in a header, or if there are
16
consecutive read/write errors within one sector, that
sector
is
defined as a bad sector.
This file
is
recorded
on
surface
1,
track
255
(decimal) of an RLOIK cartridge, and surface
1,
tra(!k
511
(decimal) of an RL02K cartridge. The file consists of
40
sectors of
128
words each. Figure
1-6
shows
the format of the Bad
Sector File.
There
is
room
in
the file for
128
entries written by the factory and for
128
entries that can be written
in
the field if bad sectors develop during field use.
1-8
I
-.0
LAST
CYLINDER
LAST
SURFACE
SEC
TOR
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
BAD SECTOR FILE
CONTENTS
FACTORY
WRITTEN BAD SECTOR INFO
ALL ONES
DUPLICATE OF SECTORS 0, 1
ALL ONES
DUPLICATE OF SECTORS
0,1
ALL ONES
DUPLICATE OF SECTORS
0,1
ALL ONES
DUPLICATE OF SECTORS
0,1
ALL ONES
FIELD WRITTEN BAD SECTOR INFO
ALL ONES
DUPLICATE OF SECTORS 20,
21
ALL ONES
DUPLICATE OF SECTORS 20,
21
ALL ONES
DUPLICATE OF SECTORS 20,
21
ALL ONES
DUPLICATE OF SECTORS 20,
21
ALL ONES
Figure
1-6
Bad Sector File Format
TWO
SECTORS
25616
BIT
WORDS
125
ENTRIES
SECTOR
ENTRY
SECOND
BAD
SECTOR
ENTRY
.
125th BAD {
SECTOR
ENTRY
MSB
16
BIT
WORD
LSB
OR
15
14
113
112
1
11
1
10
1
9
8 1
7
1 6 1
5
1 4 1
3
1
2
11
1
0
0
ZERO
5
MOST
SIGNIFICANT OCTAL DIGITS OF CARTRIDGE SERIAL
NUMBER
1 ZERO
5 LEAST SIGNIFICANT
OCTAL
DIGITS OF CARTRIDGE SERIAL
NUMBER
2
ZEROES
3
ZEROES
4
ZEROES
CYLINDER ADDRESS
5 ZEROES
HEADl
ZEROES
I
SECTOR ADDRESS
6
f--
SAME
FORMAT
AS
"'IRST
BAD
SECTOR ENTRY
7
,
r'
,
.
252
f--
SAME
FORMAT
AS
FIRST BAD SECTOR ENTRY
253
254
ALL
ONES
255
ALL
ONES
NOTE:
UNUSED
BAD SECTOR ENTRIES ARE
ALL
ONES
CZ-2028
1.6 RLOI
jRL02
SPECIFICATIONS
The following tables list the specifications of the
RL01jRL02
drives and the
RL01KjRL02K
car-
tridges.
1.
Table
1-2
RL01jRL02
Disk Drive Physical and Environmental Specifications
2.
Table
1-3
RLO 1 KjRL02K
Disk Drive Operational Specifications
3.
Table
1-4
RL01K/RL02K
Disk Cartridge Specifications
Table 1-2 RLOljRL02 Disk Drive
Physical and Environmental
Specifications
Characteristics
Width
Depth
Height
Weight
Mounting
Power
Source
Input Power
Power Factor
Starting Current
Heat
Dissipation
Power Cord and
Connector
Specifications
Compatible with
19
inch
RETMA
rack
63.5 cm (25 in) behind bezel
26.52 cm (10.44 in)
34
kg
(75 lb)
The drive mounts
on
chassis slides
90-127 Vac (47.5-63 Hz)
180-256 Vac (47.5-63 Hz)
(Manually selectable)
160W
max
at
115 Vac, 60 Hz
Greater than 0.85
3.5A (rms) max
@ 90 Vacj47.5-63
Hz
5.0A (rms) max @
127
Vac/47.5-63 Hz
1.75A (rms) max
@ 180 Vac/47.5-63 Hz
2.5A (rms) max
@ 254 Vac/47.5-63 Hz
546
Btu/hr
max
A molded line cord compatible with the drive operating voltage and the
861
power control for 120
Vac
is
attached to the drive. The power cord
is
2.74 m
(9
ft)
long and the plug
is
NEMA
5-15P.
The
230 Vac plug to be attached to high voltage
drives
is
NEMA
6-15P.
1-10
Table 1-2 RLOl/RL02 Disk Drive
Physical and Environmental
Specifications (Cont)
Characteristics
Safety
Interlocks
Temperature
/
Humidity
Altitude
Shock
Vibration
Specifications
The
RL01
/RL02
disk drive
is
UL
listed and
CSA
certified.
Interlocks are used where potential exists for
damage to drive, media, operators, or service
personnel.
Operating:
Temperature: 100 C (500 F) to 400 C (1040 F)
Note: Maximum allowable operating temperatures are
reduced by a factor
of
1.80 C/1000
meters (10 F
/1000
feet) for operation above sea level.
Relative Humidity:
10 to 90 percent with maximum wet
bulb
temperature
280 C (820 F) and minimum dew point
20 C (360 F)
Nonoperating:
Temperature:
-400 C
(-400 F) to 660 C (1510 F)
Relative Humidity: 10 to 95 percent, non condensing
Operating:
2440 m (8,000 ft) max
Nonoperating: 9144 m
(30,000
ft)
max
Operating:
Half
sine shock pulse
of
gravity peak and 10 ± 3 ms
duration applied once in either direction of three
orthogonal axes (3 pulses total)
Nonoperating:
Half
sine shock pulses of 40 gravity peak and 30 ±
10 ms duration perpendicular to each of six package
surfaces.
Operating:
Sinusoidal vibration (sweep
rate
1 octave/min)
5-50 Hz, 0.002 in displacement amplitude
50-500 Hz, 0.25 gravity peak
500-50 Hz, 0.25 gravity peak
50-5 Hz, 0.002 in displacement amplitude
I-I
I
Table 1-2 RLOI/RL02 Disk Drive
Physical
and
Environmental
Specifications (Cont)
Characteristics
Vibration
EMI
Dust
Attitude
Specifications
Nonoperating:
Vertical Axis Excitation - 1.40 gravity (rms) overall from
10 to 300 Hz; power spectral density
of
0.029
g2/Hz
from 10 to 50 Hz, with 8
dB/octave
roll-
off from
50 to 300
Hz
Longitudinal and
Lateral
Axis Excitation - 0.68
gravity (rms) overall from
10 to 200 Hz; power
spectral density
of
0.007
g2/Hz
from 10 to 50 Hz,
with 8
dB/octave
rolloff from 50 to 200
Hz
Meets
DEC
Standard
102, Section
7.
The
drive will operate in
an
ambient atmosphere
of
less
than
5 million particles 0.5 microns or larger
per cubic foot
of
air.
The
drive is intended to run
in a light industry or cleaner environment.
Maximum
pitch: ±
15
degrees
Maximum
roll: ±
15
degrees
1-12
Table 1-3 RLOI/RL02 Disk Drive
Operational Specifications
Characteristics
General
Transfer
Rate
(Unbuffered
Values)
Latency
Seek Time
Start/Stop
Time
Data
Format
Specifications
Linear bit density: 147
bits/mm
(3725 bits/in)
at
innermost track
16-bit words per sector: 128
Number
of sectors per track: 40
Track density:
4.9/mm
(125/in) for RL01K,
9.8/mm
(250/in) for
RL02K
Number
of tracks per surface: 256 for RL01K, 512 for
RL02K
Number
of surfaces: 2
Formatted capacity (megabytes): 5.2 for
RL01K,
lOA
for RL02K
Encoding method: Modified Frequency Modulation (MFM)
Bit rate:
4.1
megabits/second ± 1 percent
Bit cell width: 244 ns
± 1 percent
Word transfer rate (16-bit words): 256 kilowords/
second ± 1 percent
Rotational frequency:
2400 rev/min ± 0.25%
Average latency: 12.5 ms ± 0.25%
Maximum latency: 25.0 ms ± 0.25%
Average seek time:
55
ms max (85 tracks for RL01,
170 tracks for RL02)
One cylinder/track seek time:
15
ms max
Maximum seek time:
100 ms max (256 tracks for RL01,
512 tracks for RL02)
Start
time:
45
seconds
Stop time: 30 seconds
Refer to Figure
1-3
1-13
Table 1-4 RLOIKjRL02K Disk Cartridge
Specifications
Characteristics
Operating
Environment
Storage
Environment
Dirnensions
(Cartridge)
Maximum
Speed
Track Geometry
Identification
of Data
Location
Specifications
The cartridge
will
operate over a temperature range
of
4° C to 48° C (40° F to 120° F),
at
a relative
humidity of 8 to
80
percent. The wet bulb reading
must be less than
25° C (78° F). Before a cartridge
is
placed in operation, it should be conditioned
within its cover for a minimum of 2 hours in the
same environment as that in which the disk drive
is
operating. (The above specified ranges do not
necessarily apply to the disk drive.)
The cartridge should be stored
at
a temperature be-
tween
-400 C to
650 C
(-400 F to 150° F), with a wet
bulb reading not exceeding
29° C (85° F). For wet
bulb. temperatures between
0.56° C and
29
0
C (33
0
F
and
85° F) the disk cartridge will withstand a rela-
tive humidity of 8 to
80
percent. The stray mag-
netic field intensity shall not exceed
50 Oersteds.
The external diameter of the top cover
is
38.35 cm
(15.1 in).
The external diameter of the protection cover
is
37.03 cm (14.58 in).
The external height of the cartridge
is
6.19 cm
(2.44 in).
The rotating parts of the disk cartridge are capable
of withstanding the effect of stress created while
rotating
at
2,500 rev Imin.
There are 256 discrete concentric tracks per data
surface for the
RLO 1 K,
512 tracks per data surface
for the
RL02K.
Data Track Identification - Data tracks are numbered
by consecutive decimal numbers
(000 - 255, RLOIK;
000
- 511, RL02K) starting
at
the outermost data
track of each data surface.
Data Surface Identification - The upper data surface
is
numbered 0 and the lower surface
is
numbered
1, to correspond with the head numbers.
1-14
Table 1-4 RLOIKjRL02K Disk Cartridge
Specifications (Cont)
Characteristics Specifications
Cylinder Address - A cylinder
is
defined as both
data tracks (on either surface) with a common data
track identification.
Data Track Address - A 16-bit word defines the data
track address. Bits
0 - 5 define the sector, bit 6
defines the surface, and bits 7 -
15
define the
cylinder address. This information
is
in word 1 of
each sector's header.
1-15
2.1
SITE
PREPARATION
AND
PLANNING
CHAPTER 2
INSTALLATION
This
chapter
describes power, space, environmental, cabling, and safety requirements
that
must be con-
sidered before installation
of
the
RLOl/RL02
disk subsystem.
2.1.1 Environmental Considerations
The
RLOl/RL02
disk subsystem is designed to operate in a business or light industry environment.
Although cleanliness is
an
important consideration in the installation
of
any computer system, it is par-
ticularly crucial for proper operation
of
a disk drive.
The
RLO 1 K/RL02K
disk cartridge is not sealed
while being loaded and is therefore vulnerable to dust or smoke particles suspended in the air, as well as
to fingerprints, hair, lint, etc. These minute obstructions can cause head crashes, resulting in severe
damage to the
read/write
heads and disk surfaces.
2.1.1.1
Cleanliness -
The
RLOl/RL02
disk drives
can
operate in
an
ambient with less than five mil-
lion particles per cubic foot of air which are
0.5 micron or larger in diameter.
The
drive contains a filter
system which, under these conditions, maintains the particle count within the cartridge below 100 particles per cubic foot.
2.1.1.2 Space Requirements - Provision should be made for service clearances
of
1 m (39 in)
at
the
front
and
rear
of
the rack or cabinet in which the drive
is
mounted and 1 m (39 in)
at
either side.
Storage space for the
RLOIK/RL02K
cartridges should also be made available.
Each
cartridge has a
diameter
of
approximately 38
cm
(15 in) and a height
of
approximately 6
cm
(2.5 in).
CAUTION
RL01K/RL02K
disk cartridges must never be
stacked on top
of
each other. A designated shelf area
or
specially designed disk cartridge storage unit is
recommended (see the DIGITAL
Supplies and Ac-
cessories Catalog).
2.1.1.3
Floor Loading -
The
weight
of
the
RLOl/RL02
disk drive alone
is
34 kg (75 lb), which will
not place undue stress on most floors. However, the added weight
of
the rack or cabinet as well as the·
number
of
drives to be installed should be considered in relation to the weight
of
existing computer
systems. Possible future expansion should also be a consideration.
2.1.1.4
Heat
Dissipation -
The
heat
dissipation
of
each
RLOl/RL02
disk drive is 546
Btu/hour
max-
imum.
The
approximate cooling requirements for the entire system can be calculated by multiplying
this figure by the number
of
drives, adding the result to the total
heat
dissipation
of
the other system
components,
and
then adjusting
the
total figure to compensate for personnel, cooling system efficiency,
etc.
It
is advisable to allow a safety margin of
at
least
25
percent above the maximum estimated re-
quirements.
2-1
2.1.1.5 Acoustics - Most computer sites require
at
least some degree of acoustical treatment. How-
ever, the
RLOl/RL02
disk subsystem should not contribute unduly to the overall system
leve:1.
Ensure
that
acoustical materials used do not produce or harbor dust.
2 . .1.1.6 Temperature - The
RLOl/RL02
disk subsystem operates over a temperature range of
10
0
C
(500 F) to 400 C (1040 F). The maximum temperature gradient
is
16.60 C (300 F) per hour. The non-
operating temperature range
is
from
-400 C
(-40
0
F) to 66
0
C (151
0
F).
2 . .1.1.7 Relative Humidity - Humidity control
is
important for proper operation of any computer system since static electricity may cause memory errors or even permanent danlage to logic components.
The
RLOI/RL02
disk subsystem
is
designed to operate within a relative humidity range of
10
to 90
percent with a maximum wet bulb temperature of
280 C (82
0
F) and a minimum dew point of 2
0
C
(36
0
F). The nonoperating relative humidity range
is
from
10
to 95 percent, with a maximum wet
bullb
temperature of 460 C (115
0
F).
2.1.1.8 Altitude - Computer systems operating
at
high altitudes may have heat dissipation problems.
Altitude also affects the flying height of
read/write
heads in disk drives. The maximum altitude speci-
fied for operating the
RLOI/RL02
disk subsystem
is
2440 m (8000 ft). Also, the maximum allowable
operating temperature
is
reduced by a factor of 1.80 C per 1000m
(l0
F per 1000 ft) above sea
level
Thus, the maximum allowable operating temperature
at
2440 m (8000 ft) would be reduced to 360 C
(96
0
F).
2.1.1.9 Power and Safety Precautions - The
RLOI/RL02
disk subsystem presents
no
unusual fire or
safety hazards to an existing cOlnputer system.
AC
power wiring should be checked carefully, however,
to ensure
that
its capacity
is
adequate for the added load as well as for any possible expansion. The
RLO 1 /RL02
disk drive
is
UL
listed and
CSA
certified.
2.1.1.10 Radiated Emissions - Any source of electromagnetic interference
(EMI)
that
is
near the
computer system may affect the operation of the processor and its related peripheral equipment
..
Conl-
m.on
EMI
sources
that
are known causes of failures include:
•
Thunderstorms,
•
Broadcast stations,
•
Radar,
•
Mobile communications,
•
High-voltage power lines,
•
Power tools,
•
Arc welders,
•
Vehicle ignition systems,
•
Static
electricity.
The effect of radiated
EMI
emissions on a computer system
is
unpredictable. Thus, grounding plays an
inlportant role in protecting the circuits used in disk drive subsystems.
To help reduce the effects of known high-intensity
EMI
emissions, perform the following actions:
• Ground window screens and other large metal surfaces,
• Ensure
that
the overall computer system
is
grounded properly (refer to Paragraph 2.1.5,
Grounding Requirements),
• Provide proper storage (metal cabinets with doors) for disk cartridges.
2-2
2.1.1.11 Attitude/Mechanical Shock - Performance of the
RL01/RL02
disk subsystem will not be
affected by an attitude where maximum pitch and roll do not exceed
15
degrees.
The subsystem
is
designed to operate while a half-sine shock pulse of
10
gravity peak and
10
± 3 ms
duration
is
applied once in either direction of three orthogonal axes (three pulses total).
2.1.2 Options
The
RL01/RL02
disk drive can be shipped with various controllers (for UNIBUS,
OMMIBUS
and
LSI-II
Bus computer systems), and can be configured for
115
Vac or 230 Vac operation.
Table
2-1
shows saleable
RL01/RL02
subsystem options. Table
2-2
shows
RL01/RL02
cabinet com-
ponents.
Table 2-1 Saleable
RLOI/RL02 Subsystem Options
Option
Number
RL01A
RL02A
RL01-AK
RL02-AK
RL01K-DC
RL02-DC
RL11-AK
RL211-AK
RLV11-AK
RLV12-AK
RL8A-AK
RL28A-AK
RLV21-AK
RLV22-AK
Description
RL01 unit, BC20J
I/O
cable, chassis slide and mounting hardware
RL02 unit, BC20J
I/O
cable, chassis slide and mounting hardware
RL01-A (drive), RL01K-DC (cartridge)
RL02-A (drive), RL02K-DC (cartridge)
RL01 data cartridge
RL02 data cartridge
RL01-AK, RL11 controller, BC06R, terminator
RL02-AK, RL11 controller, BC06R, terminator
RL01-AK, RLV11 controller,
BC06R, terminator
RL02-AK, RLV11 controller, BC06R, terminator
RL01-AK, RL8A controller, BC80J, terminator
RL02-AK, RL8A controller, BC80J, terminator
RL01-AK, RLV12 controller, BC80M, terminator
RL02-AK, RLV12 controller, BC80M, terminator
2-3
NOTE
BC20J cables come in lengths
of
20, 40 or 60 feet.
If
10 foot cables are desired, then the cable designation
becomes 70-12122-10. Total length
of
cables from
this controller to the last drive must not exceed
30
M (100 ft.).
Table 2-2 Saleable Cabinet Options:
(Includes Skins, Doors,
Covers, Trim, and Power
Controllers)
Ty
pe Volts
Dwg.
Remarks
H
950 110
H960-BC
Includes five 26.67 cm {l0.5 in)
220
H960-BD
high panels
H 967
110
H967-BA
26.67 cm
(10.5 in) cover panels
220 H967-BB
(H950-QA) must be ordered if
required
H
9500 110 H9603-ED SWLB with H9514-B top covers
220 H9603-EE
DWLB with H9514-A top covers
110 H9601-ED
220 H9601-EE
SWHB complete hiboy cabinet
110 H9602-EA
220
H9602-EB
DWHB complete hiboy cabinet
110 H9600-EA
H
9500 220 H9600-EB SWHB option arrangement dwg.
H9602-B-O Order as required
H9600-A-O DWHB option arrangement dwg.
Order as required
H9603-B-O SWLB option arrangement dwg.
Order as required
H
9500 H9601-A-O
DWHB option arrangement dwg.
Order as required
2-4
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