Digital Equipment RWZ52 User manual
RWZ52OpticalDiskDrive
User'sGuide
Order Number: EK-RWZ52-UG. A01
Digital Equipment Corporation
Maynard, Massachusetts
April 1994
The information in this document is subjet 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
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ZK5909
Contents
Drive Characteristics 1-1
Features of the RWZ52 Multifunction Optical Disk Drive.......................................................1-2
Performance Characteristics ....................................................................................................1-3
Media Characteristics..............................................................................................................1-4
Interface..................................................................................................................................1-4
Environmental Specifications..................................................................................................1-5
AC Power Requirements (Standalone).....................................................................................1-5
Reliability and Service.............................................................................................................1-6
Physical Characteristics...........................................................................................................1-6
Setting up the RWZ52 2-1
Preparing the environment.......................................................................................................2-1
Clearance requirements.....................................................................................................2-1
Location requirements ......................................................................................................2-1
Rear panel features..................................................................................................................2-2
To set the SCSI ID............................................................................................................2-3
To set the operation mode.................................................................................................2-4
Connecting to the host computer..............................................................................................2-5
Troubleshooting.......................................................................................................................2-6
Using Optical Disks 3-1
Choosing an optical disk..........................................................................................................3-2
Labeling an optical disk cartridge............................................................................................3-3
Write-protecting an optical disk...............................................................................................3-4
Maintaining an optical disk in good condition .........................................................................3-5
Operating the RWZ52 4-1
Identifying front panel features................................................................................................4-2
To manually eject a cartridge ..................................................................................................4-3
Software Applications For The RWZ52 5-1
Product Numbers Options and Supplies A-1
Figures
Rear Panel Features.................................................................................................................2-2
Proper Label Positions.............................................................................................................3-3
Write-Protect Button Location.................................................................................................3-4
Front Panel Features................................................................................................................4-1
Tables
RWZ52 Supported Options......................................................................................................5-2
Optical Library Products Matrix............................................................................................. A-1
Basic Supplies and Reorderable Parts..................................................................................... A-2
Related Documentation .......................................................................................................... A-3
iv
Preface
Purpose of This Guide
This guide provides information on setting up and using the RWZ52
Optical Disk Drive.
Who Should Use This Guide
This guide is written for owners and users of the RWZ52 Optical Disk
Drive.
Structure of This Guide
This guide is organized as follows:
Chapter 1: Drive Characteristics - This chapter provides an overview
of the RWZ52 Optical disk drive. Included are tables listing the drive's
physical, environmantal, electrical, reliability, and performance
specifications.
Chapter 2: Setting up the RWZ52 - Instructions on choosing a location,
configuring the drive, and connecting it to the host computer are
contained in this chapter.
Chapter 3: Using Optical Disks - This chapter explains how to label
and write-protect optical disks. In addition, suggestions are provided for
the proper care and handling of disks.
Chapter 4: Operating the RWZ52 - The front panel features are
described in this chapter. A procedure for manually ejecting a cartridge
is included as well.
v
Chapter 5: Software Applications for the RWZ52 - This chapter
provides a summary of some of the supported software applications and
operating systems available for the RWZ52.
Appendix A: Product Numbers, Options, and Supplies -Tables are
supplied listing part numbers for Digitals family of optical disk products,
order numbers for media and supplies, and order numbers for related
documentation.
vi
1
Drive Characteristics
This chapter provides information on the following topics:
•product features
•performance characteristics
•media characteristics
•environmental specifications
•power requirements
•service specifications
•physical characteristics
1-1
Drive Characteristics
Features of the RWZ52 Multifunction Optical Disk Drive
High Performance
•23 millisecond average seek time
•8 millisecond average latency
•1000 Kbytes/second data transfer rate for reads
•500 Kbytes/second data transfer rate for writes
•less than 3 second media load and spin-up time
•Digital Signal Processor based servo - intelligent servo system for
faster seeks and lower error rates
•split optics - lighter optical head for faster and more accurate data
access
•caching - full read and write caching for optimizing system
performance
Industry Standard Compliance
•5.25 inch industry standard media (ISO and ANSI)
•Continuous composite format
Superior Reliability
•100,000 hours MTBF (Mean Time Between Failures)
•1,200,000 MSBF (Mean Swaps Between Failure - Autochanger only)
1-2
Drive Characteristics
Performance Characteristics
650 MByte Disks
1.3 GByte Disks
Seek Times
Average Seek 23.5 ms
23.5 ms
Full Stroke 45 ms
45 ms
Short Seek(across 2.2 Mbyte) 5 ms
4 ms
Single track(track-to-track) 2 ms
2 ms
Average Latency 8.3 ms
12.5 ms
Average Access Time 31.8 ms
36 ms
Spindle Rotational Speed 3600 rpm
2400 rpm
Data Transfer Rates
Reads (max. sustained) 1.0 Mbytes/sec.
Up to 1.6
Mbytes/sec.
Writes (max. sustained) 0.5 Mbytes/sec.
Up to 0.8
Mbytes/sec.
Burst (synchronous) 5 Mbytes/sec.
5 Mbytes/sec.
Burst (asynchronous) 3 Mbytes/sec.
3 Mbytes/sec.
Buffer size 512 Kbytes
512 Kbytes
Read buffering Read aheads
Read aheads
Write buffering Immediate
Reporting Write Re-
ordering
Immediate
Reporting Write Re-
ordering
Read/Write Error Rate less than 1 per 10
14
bytes
less than 1 per 1014
bytes
Media Load/Unload Times (Autochanger)
Load (including spin up) 2.8 sec. avg.
2.3 sec. avg.
Unload (including spin down) 1.4 sec. avg.
1.4 sec. avg.
Media Load/Unload Times (Standalone)
Load (including spin up) 3.8 sec. avg.
3.3 sec. avg.
Unload (including spin down) 2.3 sec. avg.
2.3 sec. avg.
1-3
Drive Characteristics
Media Characteristics
650MByte Disks
1.3GByte Disks
Formatted Capacity
1024 Bytes/sector disks 650 Mbytes
(325/side)
1.3 Gbytes (650/side)
512 Bytes/sector disks 594 Mbytes
(297/side)
1.2 Gbytes (600/side)
Bytes per sector 10241/512
10241/512
Sector per track 31/17
31/17
Physical tracks per surface 18751
21600
Logical tracks per surface 18751
37594
Rewritable media format Continuous
Composite
conforming to
ISO/IEC 10089A;
ANSI X3.212
ECMA-184; ISO/IEC
DIS 13549 (draft)
Write-Once media format Continuous
Composite write-
once (CCW)
conforming to
ISO/IEC DIS 11560;
ANSI X3.220
ECMA-184; ISO/IEC
DIS 13549 (draft)
Media Life 30 years
30 years
Interface SCSI-2 single-ended
SCSI-2 single-ended
1Digital supports 512 byte sectors only!
1-4
Table of contents
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