Digital Equipment StorageWorks RW546 User manual

Small Optical Disk Library
(RW546)
Service Manual
EK–SOL46–SV. B01
Digital Equipment Corporation
Maynard, Massachusetts

Second Edition, October 1997
The information in this document is subject to change without notice and should
not be construed as a commitment by DIGITAL Equipment Corporation.
DIGITAL Equipment Corporation assumes no responsibility for any errors that
might appear in this document.
The software described in this document is furnished under a license and may be
used or copied only in accordance with the terms of such license. No
responsibility is assumed for the use or reliability of software or equipment that
is not supplied by DIGITAL Equipment Corporation or its affiliated companies.
Reproduced with permission of the Hewlett-Packard Company
The following are trademarks of DIGITAL Equipment Corporation: the Digital
logo and StorageWorks.
1997 DIGITAL Equipment Corporation. All rights reserved.
Printed in USA

EK–SOL46–SV. B01 iii
Contents
1 Product Information
Product Features ............................................................................................................. 1–2
Interface Configurations (RW545/RW546)...................................................................... 1–2
SCSI Interface Options ........................................................................................... 1–3
Single-ended SCSI Interface.................................................................................... 1–3
Differential SCSI Interface ...................................................................................... 1–3
The Optical Drive Mechanism ........................................................................................ 1–3
Magneto–Optical Disks .................................................................................................. 1–4
Product Support .............................................................................................................. 1–5
Product Matrix ............................................................................................................... 1–5
Characteristics ................................................................................................................ 1–5
2 Environmental/Installation/PM
Environmental Requirements ......................................................................................... 2–1
Primary Power/External Ground ..................................................................................... 2–1
Clearance Requirements ................................................................................................. 2–1
Location Requirements ................................................................................................... 2–1
Responsibilities .............................................................................................................. 2–2
Checkout Procedure ....................................................................................................... 2–2
Preventive Maintenance ................................................................................................. 2–3
Cleaning Optical Disks............................................................................................ 2–3
Cleaning Tools Available......................................................................................... 2–4
3 Product Configuration and Operation
Configuring and Operating the RW546 Jukebox.............................................................. 3–1
Assembly and Configuration ................................................................................... 3–1
Jukebox Components....................................................................................................... 3–2
Removing the Shipping Screw......................................................................................... 3–4
Rear Panel Features and Controls.................................................................................... 3–5
Connecting an Uninterruptable Power Supply.................................................................. 3–6
Connecting the SCSI Cables............................................................................................ 3–7
Connecting Power ........................................................................................................... 3–8
Front Panel/Control Panel Operations.............................................................................. 3–9
Host Configuration........................................................................................................ 3–10

Small Optical Disk Library RW546 Service Manual
iv EK–SOL46–SV. B01
3 Product Configuration and Operation (continued)
Autochanger Configuration Choices.............................................................................. 3–10
Setting a Configuration (“CONF”) ................................................................................ 3–14
Displaying Information Logs......................................................................................... 3–14
Choosing Tests and Displaying Results (“TEST”) ......................................................... 3–14
Setting the SCSI Address .............................................................................................. 3–16
Securing the Jukebox..................................................................................................... 3–17
Setting a New Security Code......................................................................................... 3–17
Restricting Disk Insertion and Removal ........................................................................ 3–18
Setting CONF 15 or CONF 20....................................................................................... 3–18
Controlling Mailslot Rotation........................................................................................ 3–19
Moving or Shipping the RW546 Jukebox ..................................................................... 3–20
Moving the Jukebox a Short Distance.................................................................... 3–20
Shipping the Jukebox............................................................................................. 3–21
4 Troubleshooting and Diagnostics
Operation / Installation Troubleshooting – RW546 Jukebox............................................ 4–1
Operation/Installation Error Information ................................................................. 4–1
Accessing and Running Internal Diagnostic Tests.................................................... 4–7
Operation /Installation Troubleshooting................................................................... 4–8
Error and Performance Logs............................................................................................ 4–9
The Find Home Sequence and Information Logs........................................................... 4–11
Specific Steps of the FIND HOME Sequence......................................................... 4–11
Power–on Selftest.......................................................................................................... 4–21
Optical Disk Cleaning – All Jukeboxes.......................................................................... 4–22
Cleaning Tools Available....................................................................................... 4–23
Using the Eject Tool to Remove a Disk From the RWZ53 Drive ........................... 4–23
Troubleshooting Using the Control Panel and Observation ........................................... 4–24
The Autochanger Lists the First "Possibles" .......................................................... 4–25
How to Use the Results of the Internal Tests ......................................................... 4–27
The FRU Isolation Test Sequence ......................................................................... 4–28
Error and Performance Logs ................................................................................. 4–29
Verification/Recovery from Hardware Errors ............................................................... 4–30
Getting Error Information through the SCSI Bus .......................................................... 4–43
Diagnostics .................................................................................................................. 4–44
Internal Diagnostics Tests ............................................................................................. 4–45

Contents
EK–SOL46–SV. B01 v
5 Removal and Replacement
Field–Replaceable Assemblies ....................................................................................... 5–2
ESD Precautions ..................................................................................................... 5–3
Tools Required ....................................................................................................... 5–3
Assembly/Disassembly Procedures.................................................................................. 5–3
Service Access ............................................................................................................... 5–4
Replacing the Autochanger Controller PCA ............................................................ 5–6
Replacing Assemblies in the Front Bezel ................................................................ 5–8
Replacing the Fan ................................................................................................. 5–10
Replacing the Display ........................................................................................... 5–11
Replacing the Mailslot Assembly........................................................................... 5–12
Replacing the Optical Drive Mechanism ............................................................... 5–14
Manually Removing Disks from Drives ................................................................ 5–18
Removing a Disk from the RWZ53 Drive.............................................................. 5–19
Replacing the Picker/Carriage Assembly ............................................................... 5–20
Replacing the Leadscrew Assembly ...................................................................... 5–22
Replacing the Power Supply ................................................................................. 5–27
Replacing the Magazine Guides ............................................................................ 5–28
Replacing the SCSI Cable ..................................................................................... 5–29
Replacing the Differential PCA (Differential Versions Only) ................................ 5–29
Re–initializing the Autochanger Controller PCA RAM after Service ............................ 5–29
Variables Set by Configuration 16 ......................................................................... 5–29
Variables Set by Configuration 18 ......................................................................... 5–31
Field Replaceable Units ................................................................................................ 5–36
Recommended Service Kits........................................................................................... 5–37
Miscellaneous ............................................................................................................... 5–38
6 Theory of Operation
The Autochanger ............................................................................................................ 6–1
Movements.............................................................................................................. 6–1
Mechanics ............................................................................................................... 6–3
The Autochanger Controller PCA ................................................................................... 6–4
The Power Supply .......................................................................................................... 6–6
The Multifunction Optical Drive and Drive Controller ................................................... 6–7
Controller PCA........................................................................................................ 6–8
Servo PCA............................................................................................................... 6–8
Mechanism Assembly.............................................................................................. 6–9
4X Drive Mechanism............................................................................................. 6–10
Optical Disk Layout and Error Correction .................................................................... 6–13
Disk Formats......................................................................................................... 6–13
Optical Disk Layout............................................................................................... 6–13
User Zone Layout.................................................................................................. 6–14
Optical Disk Layout - 1.3 Gbyte Capacity.............................................................. 6–16
User Zone Layout - 1.3 Gbyte Capacity................................................................. 6–17

Small Optical Disk Library RW546 Service Manual
vi EK–SOL46–SV. B01
6 Theory of Operation (continued)
Drive Defect Management ............................................................................................ 6–28
Slip Sparing Algorithm.......................................................................................... 6–29
Replacement Sparing Algorithm............................................................................ 6–30
Error Thresholds.................................................................................................... 6–30
Error Detection and Recovery ....................................................................................... 6–31
Error Detection...................................................................................................... 6–32
Error Detection Processes...................................................................................... 6–33
SCSI Detected Errors............................................................................................. 6–33
Move Errors........................................................................................................... 6–34
Hardware Error Codes................................................................................................... 6–35
Real Time Event Logging...................................................................................... 6–35
Diagnostic Stragety................................................................................................ 6–36
The SCSI Interface ....................................................................................................... 6–36
Single–Ended versus Differential SCSI Interfaces.................................................. 6–37
SCSI Command Set .............................................................................................. 6–37
Reader Comments
Figures
1–1 The 16–Slot Optical Disk Jukebox – RW546.................................................... 1–1
3–1 Jukebox Major Components ............................................................................ 3–2
3–2 Shipping Screw Location ................................................................................. 3–4
3–3 Rear Panel - RW546 ........................................................................................ 3–5
3–4 Front Panel....................................................................................................... 3–9
3–5 Replacing the Shipping Screw........................................................................ 3–22
4–1 Information and Tests Through the Control Panel........................................... 4–25
4–2 The Autochanger Returns Suspect FRUs ....................................................... 4–25
4–3 How Service Views the Suspect FRUs ........................................................... 4–27
4–4 Information and Tests Through the SCSI Bus ................................................ 4–44
5–1 Removing the Outside Cover ........................................................................... 5–4
5–2 Removing the Access Panel ............................................................................. 5–5
5–3 Removing the Picker Umbilical Cable Shield Rod ........................................... 5–5
5–4 Fastening Picker to the Service Position .......................................................... 5–6
5–5 Controller PCA Cables .................................................................................... 5–7
5–6 Controller PCA Mounting Screws and Tab Holes ............................................ 5–7
5–7 Front Bezel Mounting Screws ......................................................................... 5–9
5–8 Front Panel Tilted Out ................................................................................... 5–10
5–9 Replacing the Fan .......................................................................................... 5–10
5–10 Replacing the Display ................................................................................... 5–12
5–11 Mailslot Mounting Screws ............................................................................. 5–13
5–12 Mailslot Mounting Thumbscrew .................................................................... 5–13
5–13 Removing the RFI Shield .............................................................................. 5–15
5–14 Fastening Picker to the Service Position ........................................................ 5–15
5–15 Drive Cable Connections 1-Drive Version ..................................................... 5–16

Contents
EK–SOL46–SV. B01 vii
Figures (continued)
5–16 Drive Cable Connections 2-Drive (4X)Version .............................................. 5–17
5–17 Right–Side Drive Mounting Screws ............................................................... 5–17
5–18 Left–Side Drive Mounting Screws ................................................................. 5–18
5–19 Inserting the C1113 Disk Eject Tool .............................................................. 5–19
5–20 Dismounting the Carriage/Picker Assembly .................................................. 5–20
5–21 Removing the Carriage Shaft ......................................................................... 5–21
5–22 Removing the Leadscrew Mounting Screw .................................................... 5–22
5–23 Fastening Picker to the Service Position ........................................................ 5–23
5–24 Loosening the Power Cable Clamps .............................................................. 5–24
5–25 Removing the Leadscrew Assembly .............................................................. 5–25
5–26 Preparing the Leadscrew Assembly for Replacement ..................................... 5–26
5–27 Power Supply Removal (Single–Ended module shown) ................................. 5–27
5–28 Removing the Magazine Guides .................................................................... 5–28
5–29 RW546 Exploded View ................................................................................ 5–33
6–1 SCSI Command Translation for Autochanger Operation................................... 6–2
6–2 Autochanger Controller PCA Block Diagram .................................................. 6–5
6–3 Functional Diagram ......................................................................................... 6–7
6–4 4X Drive Functional Diagram ........................................................................ 6–10
6–5 Optical Disk Layout....................................................................................... 6–14
6–6 User Zone Layout for 650-Mbyte Media ........................................................ 6–16
6–7 User Zone Layout for 1.3 Gbyte Media, g=1 .................................................. 6–18
6–8 User Zone Layout for 1.3 Gbyte Media, g=16................................................. 6–19
6–9 User Zone Layout for 2.6 Gbyte, 1024 bytes/sector........................................ 6–22
6–10 User Zone Layout for 2.3 Gbyte, 512 bytes/sector.......................................... 6–23
6–11 Error Detection and Recovery ........................................................................ 6–31
Tables
1–1 Jukebox Capacities .......................................................................................... 1–4
1–2 RW546 Jukebox Product Matrix ........................................................................ 1–5
1–3 Optical Disk Standards Met by Digital Optical Disks ........................................ 1–9
3–1 UPS Power Requirements .................................................................................. 3–6
3–2 SCSI Cable Lengths .......................................................................................... 3–7
3–3 Autochanger Configuration Choices................................................................. 3–11
4–1 Sequence Tests................................................................................................... 4–2
4–2 Exerciser Tests .................................................................................................. 4–3
4–3 Electronic Core Tests......................................................................................... 4–5
4–4 Information Logs ............................................................................................... 4–9
4–5 List of Micro-Move Reference Table ............................................................... 4–13
4–6 Operation Errors - SCSI Connect Jukebox........................................................ 4–17
4–7 Recovery for Specific Hardware Errors............................................................ 4–30
5–1 Non-Exchange Assemblies............................................................................... 5–32
5–2 List of Field Replaceable Units ....................................................................... 5–36
5–3 Exchange Parts................................................................................................. 5–37
5–4 Common Resource Parts .................................................................................. 5–38
6–1 Values for n and m for 1.3–Gbyte with g=16 (1024 media) ............................. 6–20

Small Optical Disk Library RW546 Service Manual
viii EK–SOL46–SV. B01
Tables (continued)
6–2 Physical Revolution to Logical Track Layout .................................................. 6–20
6–3 4X 1,024 Bytes /Sector Disk Sector Structure................................................... 6–24
6–4 4X 512 Bytes /Sector Disk Sector Structure ..................................................... 6–25
6–5 Technical Comparisons of 1X, 2X, and 4X Optical Drives............................... 6–27
6–6 Error Thresholds ............................................................................................. 6–31
6–7 Group 0 Commands (6–byte command) .......................................................... 6–38

EK–SOL46–SV. B01 ix
Revision Record
This Revision Record provides a concise publication history of this manual. It lists the
guide revision levels, release dates, and reasons for the revisions. It also describes how
the changes to affected pages are marked in the manual.
Revision Level Date Summary of Changes
EK–SOL46–SV. A01 March 1997 First Edition
EK–SOL46–SV. B01 October 1997 Corrects Table 5–1. Also
adds recommended
service kits and common
resource parts to end of
Chapter 5.

EK–SOL46–UG. B01 xi
About This Manual
This manual describes how to install, configure, and maintain the small optical disk
library RW546. It also contains a chapter describing the theory of operation.
Audience
This manual supports trained service personnel for the small optical disk library
RW546.
Document Organization
This manual contains the following chapters:
Chapter 1: Product Information
Describes product features and possible configurations. Also contains a matrix of
environmental specifications.
Chapter 2: Environmental/Installation/PM
Describes site requirements, general checkout procedures, and preventive
maintenance.
Chapter 3: Product Configuration and Operation
Describes how to setup the RW546, connect to a host, and verify operation.
Chapter 4: Troubleshooting and Diagnostics
Describes how to use locally available error information plus external and
internal tests to determine corrective action.
Chapter 5: Removal and Replacement
Describes how to remove and replace sub-assemblies in the RW546 enclosure.
Also includes Field Replaceable Units (FRU’s), recommended service kits, and
common resource parts.

Small Optical Disk Library RW546 Service Manual
xii EK–SOL46–SV. B01
Chapter 6: Theory of Operation
Describes how the RW546 works and the relationship between the mechanical
operation and command set execution.
Typographical Conventions
The following typographical conventions are used in this manual:
Italic Font - Italic font designates the title of a document and statements that
need to be emphasized.
SERIF TYPE – denotes information that is displayed in the display window of
the jukebox.
SAN-SERIF TYPE – indicates the key to press on the jukebox control panel
NOTES, CAUTIONS, and WARNINGS
NOTE
A note calls attention to information which can be
helpful in understanding the operation of the
product.
CAUTION
Caution calls attention to an operating procedure
or practice which could result in damage to the
product if not correctly performed. Do not
proceed beyond this symbol until you fully
understand and meet the indicated conditions.
WARNING
Warning calls attention to a procedure or practice
which could result in personal in-jury if not
correctly performed. Do not proceed beyond this
symbol until you fully understand and meet the
indicated conditions.
Reader Comments
DIGITAL is committed to providing the best products, and we consider our manuals to
be important components of our products. Therefore, you are encouraged to submit
your comments, suggestions, and corrections to help us improve our product
documentation.
Please submit all comments and corrections to this manual on the Reader Comment
Form included at the back of this manual.

About This Manual
EK–SOL46–SV. A01 xiii
Support and Services
Who to contact in the Americas
Information and Product Questions: Local Sales Office / StorageWorks
Hotline [phone]
Installation Support: Contact the DIGITAL Distributor where
the Storage Solution was Purchased /
Local Digital Sales Office.
DIGITAL Multivendor Customer Service (MCS)
Installation Contact the DIGITAL Customer Support
Center (CSC).
Warranty Contact the DIGITAL Customer Support
Center (CSC) for warranty service after
solution is installed and operating.
Remedial Contact the DIGITAL Customer Support
Center (CSC)
Note: A Service Contract is
recommended when the equipment is
out of warranty. Contact the local
DIGITAL Sales Office.
Customer Support Center (CSC) 1 800-354-9000
Who to contact in Europe
Information and Product Questions, Contact the DIGITAL 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 DIGITAL 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 DIGITAL Distributor or reseller from whom the
equipment was purchased.

EK–SOL46–SV. B01 1–1
1
Product Information
This chapter provides general product information and lists important features and speci-
fications. A matrix of environmental specifications provide parameters for several sub-
assemblies.
Figure 1–1 The 16-Slot Optical Disk Jukebox - RW546

Small Optical Disk Library RW546 Service Manual
1–2 EK–SOL46–SV. B01
Product Features
The RW546 optical disk jukebox has the following features:
• direct on-line access to data
• data security through the ability to "lock" the jukebox, preventing disk re-
moval.
• SCSI Interface
• single-ended (RW545) or differential (RW546)
• SCSI-2 command set
• autochanger reliability of:
• 100,000 hours MTBF (Mean Time Between Failure)
• 1,000,000 MSBF (Mean Swaps Between Failure)
• modular replacement of all major assemblies
• downloadable firmware for the drive mechanism and the autochanger con-
troller PCA
• a Digital Signal Processor (DSP) based servo built into the drive mechanism
for faster seek times and lower error rates
• split1 optics resulting in the use of a lighter optical head for faster and more
accurate data access
• full read data caching to optimize system performance
• high reliability and data security when using Digital brand rewritable and
write-once 5.25-inch optical disks
• Digital magneto-optical disks meet the standards given in Table 1–3.
Interface Configurations (RW545/RW546)
This jukebox is available with either a single-ended (RW545) or a differential
(RW546) SCSI interface. These different product configurations are described in
the following paragraphs.

Chapter 1. Product Information
EK–SOL46–SV. B01 1–3
NOTE
For an explanation of the product numbers for
each configuration, see the "Product Matrix" in this
chapter.
SCSI Interface Options
Single-ended SCSI Interface (RW545-ZA)
With a single-ended SCSI interface the total SCSI cable length allowed between
peripherals and the host is 6 meters. The internal SCSI cable length of 1.45 me-
ters must be included in this calculation.
A single-ended SCSI interface may be preferable when peripherals are physically
close to the host and short SCSI cables are adequate to connect (or daisy-chain)
them. An example of an appropriate use of a single-ended SCSI interface is when
a host and several peripherals are daisy-chained and located in an upright cabi-
net, connected with 1-meter cables.
Differential SCSI Interface (RW546-ZA)
The differential SCSI interface specifies the use of a differential SCSI converter
PCA. This PCA enables the jukebox to be connected to an external differential
SCSI bus. The differential SCSI converter PCA uses the equivalent of 10 meters
of SCSI cable internally, so the allowable external cable length is limited to 15
meters instead of the 25 meters usually allowed on a differential SCSI bus.
A differential SCSI interface is used when up to 15 meters of SCSI cabling is
needed, and the peripherals need to be physically located farther apart than the
single-ended SCSI interface allows. An example of an appropriate use of a dif-
ferential SCSI interface is when a peripheral must be located in a different loca-
tion than the host system for security reasons or for user convenience.
The differential SCSI interface has better noise immunity than the single-ended
SCSI bus, so may also be used in a hardware configurations that produce noise
on the SCSI bus.
The Optical Drive Mechanism
The optical drive mechanism (RWZ53) in the autochanger of the jukebox is a
multifunction drive that can operate in both rewritable and write-once modes.
The drive uses both rewritable and write-once 5.25-inch magneto-optical disks
that comply with ANSI and ISO standards for Continuous Composite format.
The drive can sense a rewritable or write-once disk by the formatting on the disk
and enter the appropriate mode.

Small Optical Disk Library RW546 Service Manual
1–4 EK–SOL46–SV. B01
Table 1–1 Jukebox Capacities
Disk Capacity/Format Max. Jukebox Capacity
594 Mbyte, 512 bytes/sector1 9.5 GBytes
650 Mbyte, 1,024 bytes/sector 10.4 GBytes
1.2 Gbyte, 512 bytes/sector119.2 GBytes
1.3 Gbyte, 1,024 bytes/sector 20.8 GBytes
2.4 Gbyte, 512 bytes/sector 36.8 GBytes
2.6Gbyte, 1,024 bytes/sector 41.6 Gbytes
NOTE
1X-Density disks are read-only compatible.
Magneto-Optical Disks
Magneto-optical disks are more durable, more reliable, removable, and cost far
less per megabyte than magnetic disks. Data can be read through fingerprints
and minor scratches. MO disks can withstand x-rays, magnetic interference, and
can be dropped from desk height without damage.
Magneto-optical disks store data on a magnetic layer in the form of magnetic
flux reversals rather than on a pitted surface used in other optical technologies.
Because surfaces of the MO disk are not physically changed, they can be written
to and erased repeatedly with no measurable data degradation. Optical disks have
an archival life of thirty years based on accelerated life tests for data retention.
The disk is mounted in a rigid plastic case with a metal shutter, similar to a 3.5-
inch magnetic flexible disk. Optical disk storage capacity varies depending on
the disk type (see Table 1-1). Check the host system documentation to determine
which disk format is supported. MO disks have two recording sides. To access
the second side, the cartridge must be ejected, turned over, and re-inserted into
the drive.
There are two types of magneto-optical disks: rewritable optical disks and write-
once optical disks. The two disk types can be differentiated by the words
"rewritable" or "write-once" printed on the disk's metal shutter.
For data safety, you can independently write-protect each side of the disk by set-
ting the write-protect tab on the corner of the cartridge.
1 Digital Operating Systems only support 512 bytes/sector.

Chapter 1. Product Information
EK–SOL46–SV. B01 1–5
Product Support
Host support for the jukebox is continually expanding; therefore, specific host
system support cannot be provided accurately in this manual. However, host
system support is documented in the current Product Service Plan, and the appli-
cable Software Product Description (SPD).
Product Matrix
The following products are discussed in this manual. To determine the product
and option numbers, find the product information labels located on the rear panel
and check the corresponding information in the following table.
Table 1–2 RW546 Jukebox Product Matrix
Product Option HP Designation Description
RW546-ZA Model 40XT (C1115H) 36.8 Gbyte (16 slot) multifunction optical
disk library - includes two 2.6 Gbyte
5.25 inch multifunction drive and a differ-
ential SCSI interface
RW545-ZA Model 40FX (C1100H) 36.8 Gbyte (16 slot) multifunction optical
disk library - includes one 2.6 Gbyte
5.25 inch multifunction drive and a sin-
gle-ended SCSI interface
Characteristics
The characteristics and environmental specifications for the RW546/RW545 are:
Optical Disk Jukebox/Drive Mechanism
Technical Characteristics (Drive)
Rotational speed 3000 rpm (1X & 2X)
3600 rpm (4X)
Average seek 25.0 ms
Average access time 35 ms (4X disks)
33.3 ms (1X and 2X disks)
Burst transfer rate (asynchronous) 3 Mbytes/s
Burst transfer rate (synchronous) 5 Mbytes/s
Read transfer rate - max. sustained For 1,024 bytes/sector–
up to 1.69 Mb/s (4X disks)
up to 1.24 Mb/s (2X disks)
up to 1.04 Mb/s (1X disks)

Small Optical Disk Library RW546 Service Manual
1–6 EK–SOL46–SV. B01
Optical Disk Jukebox/Drive Mechanism (continued)
Technical Characteristics (Drive)
Write transfer rate - max sustained For 1,024 bytes/sector –
up to 0.84) Mb/s (4X disks)
up to 0.62 Mb/s (2X disks)
up to 0.52 Mb/s (1X disks, read
only) Burst transfer rate (synchronous)
5 Mb/s
Burst transfer rate (asynchronous) 3 Mb/s
Read/Write error rate less than 1 block in error per 1014
bytes
Buffer size 1 Mb
Read Buffering readaheads
Write Buffering immediate reporting write re-
ordering
Interface SCSI-2 single ended /differential
asynchronous/synchronous
Physical Characteristics (Jukebox)
Height 495.3 mm (19.5 in.)
Width 220.1 mm (8.7 in.)
Depth 749.3 mm (29.5 in.)
Weight (net) 19.7 kg (43.5 lb.)
Weight (packaged) 26.3 kg (58.0 lb.)
Environmental Specifications Autochanger Drive Media
Temperature
Operating 10°to 40°C5°to 50°C10°º to 60°C
Non-operating -40°to 70°C -40°to 70°C -10°to 50°C
Temperature gradient 10°C per hour 10°C per hour 10°C per/hour
Transportation -40°to 60°C
(<14 consecutive days)
Humidity
(non-condensing)
Operating (relative) 10 to 90% 5 to 90% 10 to 80%
Non-operating 5 to 95% 5 to 95% 10 to 90%
Maximum wet bulb 29°C29°C29°C

Chapter 1. Product Information
EK–SOL46–SV. B01 1–7
Environmental Specifications (continued)
Autochanger Drive Media
Shock
(non-operating)
End-use, handling (half-sine) 150 g (3 ms) 5 g (11 ms) 760 mm
drop
(to 2 mm
vinyl-covered
concrete)
Transportation 30 g (523 cm/s) 30 g (742 cm/s)
(trapezoidal)
Vibration
(5-500 Hz range)
Operating (max. accel.) 0.21 grms 0.3 grms >0.21 grms
Non-operating random 2 g rms 3 g rms
Non-operating swept-sine 0.5 g (0-peak) 1 g (0-peak)
Altitude
Operating 4,572 m (15,000 ft)
Non-operating 15,240 m (50,000 ft)
Acoustic emissions
Operating 61.5 dB (L noise power emission level)
Idle 47 dB (L noise power emission level)
Particulates Less than 200
micrograms/cubic meter
particles suspended
Electrostatic discharge
Airgap (operating) 0 to 10 kV
Airgap (non-operating 0 to 25 kV
survival)
Direct contact (operating) 0 to 4 kV
Cooling requirements 15 CFM bi-directional
through drive