Qualstar RLS-8350 User manual

RLS-8350/85XX Series
Tape Library
Installation and Operation
Manual
511000 Rev. F

Important Manual/Firmware Revision Information
This manual and the operating firmware for the RLS family of tape library systems
are revised periodically as the product is improved. This manual was revised to
correspond with the firmware version indicated below. Do not use this manual with
prior versions of the firmware. Check with Qualstar Technical Support about use of
this manual with older or newer firmware.
Manual Corresponding Firmware
RLS-8350/85XX Series Tape Library
Installation and Operation Manual
511000 Rev. F, Revised 14 Aug 2012
RLS Firmware
700191 Version 0.00101
Copyright Notice
Copyright©2012 by Qualstar Corporation — All Rights Reserved
Information contained in this document is copyrighted by Qualstar Corporation. It is
intended for use by Qualstar's customers and prospective customers to evaluate,
integrate, operate and maintain Qualstar products. Customers and prospective
customers may reproduce this document as needed for these uses. Reproduction in
whole or in part for any other use or by any other party is prohibited without prior
written permission from Qualstar Corporation.
Every effort has been made to keep the information contained in this document
current and accurate as of the date of publication or revision. However, no guarantee
is given or implied that the document is error-free or that it is accurate concerning
any specification. Qualstar reserves the right to modify the design or specification
without notice.
Qualstar and the Qualstar logo are registered trademarks of Qualstar Corporation.
Other trademarks are the property of their respective owners.
511000 Rev. F i

Notices
Qualstar products are covered by one or more of the following U.S. patents:
6,163,139 and 6,560,061. Other patents pending.
Qualstar equipment is manufactured from new parts, or new and used parts. In some
cases, Qualstar equipment may not be new and may have been previously installed.
Regardless, Qualstar’s warranty terms apply unless the equipment is specifically
identified by Qualstar as “used” or “refurbished”.
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his
own expense. Shielded cables are required for this device to comply with FCC Rules.
Use shielded cables when connecting this device to others.
European Union Directive 89/336/EEC and Standard EN55022
(Electromagnetic Compatibility)
Warning
This is a Class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.
European Directive on Waste Electrical and Electronic Equipment (WEEE)
Qualstar encourages its customers to use current recycling practices in order to
reduce the burden that waste electronic products place on the environment.
If you are retiring a fully functional tape library, you are encouraged to transfer the
functional unit to a new user, thereby extending the useful life of the tape library. The
manufacture of all products requires the consumption of energy. By extending the life
of the tape library, energy is conserved.
In accordance with environmental directives that are being implemented in many
countries (refer to the European Directive on Waste Electrical and Electronic
ii 511000 Rev. F

Equipment - WEEE) Qualstar provides customers with “End of Life Instructions” that
identify the process for recycling the materials and components that make up a
Qualstar tape library.
End of Life Instructions
Tools required
•P1 and P2 Phillips head screwdrivers
•Hex head (Allen) wrench/driver set
•1/4-inch hex nut driver
Items recyclable using conventional methods
•Aluminum: Vertical bars on robot
•Stainless steel: Robot guides
•Steel: Frame, fasteners
•Plastic: Window, front panels, cartridge slots
•Copper: Internal wiring, motors
•Paper: Manuals
Items requiring special disposal due to lead-based solder
•Printed Circuit Boards: Controller, numerous miscellaneous small printed
circuit boards
Items that may have salvage or resale value
•Tape drives
Reduction of Hazardous Substances (RoHS)
Qualstar is committed to the implementation of RoHS (Restriction of the use of
certain hazardous substances in electrical and electronic equipment) in accordance
with the European Directive. The effectivity date for compliance is July 1, 2006, at
which time Qualstar will certify that its Tape Library products are compliant with the
RoHS standard. With the exception of Lead Based Solder, Qualstar will certify that
its products are free of all other substances listed in the Directive.
Qualstar Tape Libraries fall under the category of “Information Technology Storage
Array Systems” for which the RoHS Directive provides for a lead solder exemption.
Insofar as lead free solders are new to the electronics industry and no quality or
reliability data is available, Qualstar will invoke the lead based solder exemption
until such time as industry data verifies that lead free solders are capable of meeting
511000 Rev. F iii

iv 511000 Rev. F
or exceeding the documented reliability and quality standards achieved with lead
based solders.
Until such time as Qualstar replaces lead based solder with lead free solder, effected
subassemblies must be disposed of appropriately.
QUALSTAR CORPORATION
3990-B Heritage Oak Court
Simi Valley CA 93063
FAX: [phone]
Phone: [phone]
E-Mail: [email protected]
E-Mail: [email protected]
Web: www.qualstar.com

Table of Contents
1.Introduction................................................................................................................... 1-1
1.1Who Should Read This Manual ................................................................................... 1-1
1.2Important Safety Information ..................................................................................... 1-2
1.3Lithium Battery............................................................................................................ 1-3
2.Product Description .................................................................................................... 2-1
2.1General Description...................................................................................................... 2-1
2.2Standard Features Found in All Models..................................................................... 2-1
2.3Optional Features Available........................................................................................ 2-2
2.4Models ........................................................................................................................... 2-3
2.5Model Identification ..................................................................................................... 2-4
2.6Major Features ............................................................................................................. 2-4
2.6.1Cabinet ................................................................................................................... 2-4
2.6.2Front Panel Components ...................................................................................... 2-4
2.6.3Rear Panel Components........................................................................................ 2-7
2.6.4Medium-changer Components.............................................................................. 2-8
2.6.5Barcode Labels..................................................................................................... 2-11
2.7ADI (Automation/Drive Interface)............................................................................. 2-12
2.8RLS Operating Features ............................................................................................ 2-12
2.8.1Medium-changer Control System....................................................................... 2-12
2.8.2Inventory Database ............................................................................................. 2-12
2.8.3Library and Multi-Sequential (Multiple Stacker) Operation ........................... 2-12
2.8.4Manual Operation ............................................................................................... 2-13
2.8.5Library Partitions................................................................................................ 2-13
3.Specifications ................................................................................................................ 3-1
3.1Dimensions.................................................................................................................... 3-1
3.2Weight ........................................................................................................................... 3-3
3.3Standard AC Power Requirements and Consumption............................................... 3-3
3.3.1Power Source Disturbances .................................................................................. 3-4
3.3.2Power Entry ........................................................................................................... 3-4
3.3.3Power Cord............................................................................................................. 3-5
3.4Temperature, Humidity and Altitude ......................................................................... 3-5
3.5Acoustical Noise............................................................................................................ 3-6
4.Unpacking ...................................................................................................................... 4-1
5.Installation ..................................................................................................................... 5-1
5.1Installation Considerations ......................................................................................... 5-1
5.1.1Operating Environment ........................................................................................ 5-1
511000 Rev. F v

5.1.2Ventilation ............................................................................................................. 5-1
5.1.3AC Power Requirements ....................................................................................... 5-1
5.2Rack Mounting.............................................................................................................. 5-1
5.2.1Cautions ................................................................................................................. 5-2
5.2.2Preparing the Library for Rack Mount Installation ........................................... 5-2
5.2.3Rack Mounting the Library .................................................................................. 5-2
5.2.4Installing the Optional FastPass Elevator Expansion Module........................ 5-12
5.2.5Removing the Optional FastPass Elevator Expansion Module........................ 5-24
5.2.6Removing the Library from the Rack................................................................. 5-26
5.3Quick Check ................................................................................................................ 5-31
5.4Cable Connections ...................................................................................................... 5-31
5.4.1External Cable Requirements ............................................................................ 5-31
5.4.2Cable Connection Examples ............................................................................... 5-32
5.5Tape Drive Installation .............................................................................................. 5-33
5.5.1Installing a Tape Drive ....................................................................................... 5-33
5.5.2Removing a Tape Drive....................................................................................... 5-33
5.5.3Drive Fillers......................................................................................................... 5-34
5.6Media Handling Precautions ..................................................................................... 5-34
5.6.1General Precautions............................................................................................ 5-34
5.7Installing Media ......................................................................................................... 5-35
5.7.1Static Precautions ............................................................................................... 5-35
5.7.2Media Selection ................................................................................................... 5-35
5.7.3Write Enable Tabs............................................................................................... 5-35
5.7.4Loading a Storage Matrix with Tape Cartridges .............................................. 5-36
5.7.5Bulk Loading Media in Storage Matrices .......................................................... 5-37
5.7.6Checking the RLS Configuration ....................................................................... 5-39
5.7.7Testing Basic SCSI Operation............................................................................ 5-39
6.The Operator Interface ............................................................................................... 6-1
6.1The Standby Power Switch .......................................................................................... 6-1
6.2The Key Locks............................................................................................................... 6-1
6.3Control Panel ................................................................................................................ 6-2
6.3.1The Touch Screen .................................................................................................. 6-2
7.Home Page...................................................................................................................... 7-1
7.1Introduction .................................................................................................................. 7-1
7.1.1Table View ............................................................................................................. 7-2
7.1.2The I/O Ports Screen ............................................................................................. 7-4
7.1.3Quick Commands .................................................................................................. 7-4
7.1.4Changer Status...................................................................................................... 7-5
8.Resource Management ................................................................................................ 8-1
vi 511000 Rev. F

8.1Introduction .................................................................................................................. 8-1
8.1.1Element Addresses................................................................................................ 8-1
8.1.2Default Element Addresses .................................................................................. 8-2
8.1.3Inventory Validation ............................................................................................. 8-4
8.2Logical Libraries........................................................................................................... 8-4
8.3Sequential Operations.................................................................................................. 8-5
8.4Resource Inventory....................................................................................................... 8-5
9.Configuration Page ...................................................................................................... 9-1
9.1Configuration/Library Page ......................................................................................... 9-1
9.1.1Configuration/Library/Log Screen........................................................................ 9-2
9.1.2Configuration/Library/Network Screen ............................................................... 9-4
9.1.3Configuration/Library/Network User Screens .................................................... 9-6
9.1.4Configuration/Library/IO Port, Barcode and Power On Policy Screen.............. 9-7
9.1.5Configuration/Library/Identification and Security Screen................................. 9-9
9.2Configuration/Partition Page..................................................................................... 9-10
9.2.1Encryption Key Digest ........................................................................................ 9-12
9.3Configuration/Partition Items Page .......................................................................... 9-18
9.4Configuration/Drive Page .......................................................................................... 9-19
9.5Configuration/Drive Cleaning Items Page................................................................ 9-21
9.6Configuration/Set To Defaults Page.......................................................................... 9-22
10.The Operation Page ................................................................................................... 10-1
10.1Operation/Drive Page ............................................................................................. 10-4
10.2Operation/Element Status Page ............................................................................ 10-5
10.3Operation/Move Cartridge Page ............................................................................ 10-7
10.4Operation/Position Handler Page .......................................................................... 10-7
10.5Operation/Sequential Operations Page ................................................................. 10-8
10.6Operation/Quick Operation Page........................................................................... 10-9
11.Sequential Operation ................................................................................................ 11-1
11.1Introduction............................................................................................................. 11-1
11.2Configuration/Partition Page ................................................................................. 11-2
11.2.1Type...................................................................................................................... 11-3
11.2.2Sequential or Recycle Configuration Example .................................................. 11-4
11.2.3Dual Bin Configuration Example....................................................................... 11-4
11.2.4Start ..................................................................................................................... 11-5
11.3Interruptions ........................................................................................................... 11-6
11.3.1Power Failure/Interruption ................................................................................ 11-6
11.3.2Unrecoverable Handler Fault............................................................................. 11-6
12.Preventive Maintenance........................................................................................... 12-1
12.1.1Cleaning the Exterior.......................................................................................... 12-1
511000 Rev. F vii

viii 511000 Rev. F
12.1.2Cleaning the Interior........................................................................................... 12-1
12.1.3Cleaning the Tape Drives ................................................................................... 12-2
12.2Checking the Air Filter........................................................................................... 12-2
12.3Replacing the Air Filter.......................................................................................... 12-3
12.3.1Replacing an Air Filter in a RLS-85XX library ................................................. 12-3
12.3.2Replacing an Air Filter in a RLS-8350 library .................................................. 12-4
12.4Storage Matrices ..................................................................................................... 12-4
12.5Cartridges................................................................................................................ 12-5
13.Repacking..................................................................................................................... 13-1
13.1Repacking the RLS ................................................................................................. 13-2
13.2Preparation for Packing.......................................................................................... 13-2
13.3Packing the RLS...................................................................................................... 13-2
14.Glossary......................................................................................................................... 14-1

Introduction
1. Introduction
1.1 Who Should Read This Manual
This manual covers the Qualstar RLS-8350/85XX Series tape library systems. The
common product reference is RLS or library. Where model differences require separate
treatment exceptions are noted specifically. For clarity and compliance with the SCSI
specification, the library control interface of the RLS is defined as a “Medium-changer”
and alternately referred to throughout this manual as the “changer”.
This Installation and Operation Manual is written for the RLS installer, the system
administrator and the user/operator. This manual includes instructions on unpacking,
installation, configuration and operation. Also included are preventive maintenance
procedures and repacking instructions, in case it ever becomes necessary to transport
the unit.
For information about the SCSI interface, or other information outside the scope of
this manual, please refer to the appropriate documents listed below.
Subject Document
Qualstar
Document
Number
Specifications RLS-8500 Tape Library Product Spec 511001
Specifications RLS-8350 Tape Library Product Spec 511002
Service RLS-8350/85XX Series Tape Library
Technical Service Manual
501510
Approved Data Cartridges Product Information Note PIN-038
Barcode Label Specifications Product Information Note PIN-040
SCSI Medium-changer Information RLS SCSI-2 Interface Reference 501551
SCSI-2 Specification ANSI X3.131-1994 N/A
SCSI SPI-3 Specification NCITS T10 Project 1302D N/A
SCSI-1 ANSI X3.131-1986 N/A
SCSI-2 ANSI X3.131-1994 N/A
SCSI Parallel Interface-2 Specification (SPI-2) ANSI X3.302-1998 N/A
SCSI Architecture Model-2 (SAM-2) ANSI INCITS 366-2003 N/A
SCSI-3 Primary Commands (SPC) ANSI X3.301-1997 N/A
SCSI-3 Primary Commands - 2 (SPC-2) ANSI INCITS 351-2001 N/A
SCSI-3 Primary Commands - 3 (SPC-3) ANSI INCITS 408-2005 N/A
SCSI-3 Media Changer Commands (SMC) ANSI INCITS 314-1998 [R2003] N/A
Automation/Drive Interface - Transport Protocol (ADI) ANSI INCITS 406-2005 N/A
Automation/Drive Interface - Commands (ADI) ANSI INCITS 403-2005 N/A
Table 1-1 Applicable Documents
511000 Rev. F 1-1

Although Qualstar has made every effort to insure the accuracy of the information
contained in this manual, no guarantee is expressed nor implied that the manual is
error-free. Qualstar reserves the right to make changes at any time without prior
notification.
The Qualstar RLS is a sophisticated, state-of-the-art computer peripheral. It should
only be serviced by an authorized service technician who is experienced with the
operation and maintenance of tape libraries, and only after reading and
understanding this manual and the RLS-8350/85XX Series Tape Library Technical
Service Manual.
1.2 Important Safety Information
All of the operating instructions and maintenance procedures in Qualstar manuals
must be followed to prevent personal injury or damage to the equipment. In the
interests of safety, there are two kinds of warnings used in Qualstar documents, as
shown below.
DANGER
PERSONAL INJURY MAY RESULT IF YOU DO NOT FULLY COMPLY WITH THE
HANDLING, OPERATING, OR SERVICE INSTRUCTIONS FOUND IN A DANGER
PARAGRAPH.
GEFAHR
UNSACHGEMAESSE BENUTZUNG, BEDLENUNG ODER RAPARATUR
AUFGRUND VON NICHTBEACHTUNG DER SICHERHEITSANWEISUNG KANN
ZU VERIETZUNGEN FUEHREN.
CAUTION
EQUIPMENT DAMAGE OR LOSS OF DATA may result if you do not fully comply
with the handling, operating, or service instructions found in a CAUTION
paragraph.
In addition, useful information and tips may be found throughout the document in the
following formats:
511000 Rev. F1-2 Introduction

NOTE
SPECIAL ATTENTION to explanatory statements found in a NOTE paragraph will help you avoid
mistakes and/or save time.
NOTICE
A NOTICE box contains additional important information not covered by the
other three types of special text: DANGER, CAUTION, or NOTE.
1.3 Lithium Battery
Please observe the following when repairing the unit.
DANGER
U10, A DALLAS SEMICONDUCTOR CORPORATION DS1225AB OR A SGS-
THOMPSON MICROELECTRONICS M48258X IC ON THE EXECUTIVE PCBA
CONTAINS AN INTEGRAL LITHIUM BATTERY. AN EXPLOSION DANGER EXISTS
IF THE IC IS INCORRECTLY REPLACED. REPLACE THE IC ONLY WITH THE SAME
PART NUMBER, OR AN EQUIVALENT DESIGNATED BY THE MANUFACTURER.
DISPOSE OF THE USED IC ACCORDING TO THE MANUFACTURER'S
INSTRUCTIONS.
GEFAHR
DER U10, EIN DALLAS SEMICONDUCTOR CORPORATION DS1225AB ODER EIN
A SGS-THOMPSON MICROELECTRONICS M48258X IC AUF DEM EXECUTIVE
BOARD ENTHAELT EINE INTEGRIERTE LITHIUM BATTERIE. WENN DIESE
UNSACHGEMAESS AUSGETAUSCHT WIRD, BESTEHT EXPLOSIONS GEFAHR.
DER IC DARF NUR DURCH EINEN ARTIKEL MIT DER SELBEN ARTIKELNUMMER,
BZW, MIT EINEM VERGLEICHBAREN ARTIKEL LAUT HERSTELLER ANGABE
ERSETZT WERDEN. DIE ENTSORGUNG DES ALTEN IC’S DARF NUR GEMAESS
HERSTELLERANGABEN ERFOLGEN.
511000 Rev. F Introduction 1-3

Product Description
2. Product Description
2.1 General Description
The RLS Series is a high density, automated rack-mountable tape library. The RLS-
85XX libraries are 10 rack-units tall (10U = 17.50-inches) while the RLS-8350 models
are 6 rack-units tall (6U = 10.50-inches). There are presently four models that utilize
LTO tape technology.
Models are available with native storage capacities of over 171-terabytes. The entire
system (drives and library) is under host control via the ADI host interface.
Each library contains a high performance robotics system for handling data
cartridges, one to five (model dependent) LTO 5 SAS or fibre channel tape drives and
storage slots for data cartridges. All units operate on internationally available AC
power with active power factor correction.
The RLS Series is designed for maximum reliability. Only the highest quality
components are used in a design that is inherently robust and simple. Brushless
motors are used exclusively to effect smooth and reliable operations. All digital,
closed-loop servo systems using magnetic and optical position sensors assure fast,
smooth, trouble-free cartridge handling. The servos automatically calibrate
themselves, thus eliminating all electrical adjustments. Preventive maintenance
consists of replacing the air filter(s) and cleaning the gripper pads.
2.2 Standard Features Found in All Models
•Library interface to the application is established, via ADI, (Automation/Drive
Interface) through the tape drive's interface
•Barcode scanning of data cartridge labels
•Rack mount kit
•Simultaneous Random and Multi-Sequential operating modes with two or more
tape drives
•Library resources may be partitioned
•Multiple initiators may simultaneously connect to a single partition
•The front panel has a window for visibility into the interior
•Interior illumination
•Color touch screen Control Panel
•Easy-to-use menu system for configuration, operation and maintenance
•Tape drives are in quick-change hot swappable carriers
•Programmable, automated tape drive cleaning
•Mean-Exchanges-Between-Failures (MEBF) rating is 2,000,000 exchanges
2-1511000 Rev. F

•Maintenance-friendly by design: no adjustments, quick-swap drives, hot-swap
power supply modules
•Filtered, forced-air cooling of library and tape drives provided by redundant fans
and front replaceable air filter(s)
•Universal input power rating (100- to 240-VAC, 50/60 Hz)
•Power Factor Corrected (PFC) power system is efficient and fully CE compliant
2.3 Optional Features Available
•N+1, hot-swappable power supply modules
•FastPass™ elevator expansion option, which allows up to four RLS-85XX libraries
to be interconnected or a single RLS-8350 may be connected to an RLS-8560 or
RLS-85120 library.
•Right side Storage Matrix – adds 60 slots, or 54 if the optional I/O port is also added
for the RLS-85XX models. The RLS-8350 adds 28 slots.
•Additional I/O port in right side Storage Matrix for RLS-85XX models only.
2-2 Product Description 511000 Rev. F

2.4 Models
FEATURE/MODEL RLS-8350 RLS-8560 RLS-85120 RLS-85120
Tape Technology LTO LTO LTO LTO
Maximum Number of Drives 3 5 5 5
Standard Number of Slots 50 54 114 108
Maximum Number of Slots 50 114{114{108|
Standard I/O Ports 1 1 1 1
Optional I/O Ports 0 1}0 1}
Cartridges per I/O Port 4 4 4 4
Barcode Reader Standard Standard Standard Standard
Hot-swap Tape Drive Carriers Standard Standard Standard Standard
N+1, Hot-Swappable Power Supply Modules Optional Optional Optional Optional
FastPass Elevator Expansion option Optional Optional Optional Optional
{Includes right side Storage Matrix without I/O port
|Includes right side Storage Matrix with I/O port
}Subtracts six data slots
Table 2-1 RLS-8350/85XX Models, Features and Options
511000 Rev. F Product Description 2-3

2.5 Model Identification
Product Description 511000 Rev. F
RLS-00000
Series Identifier
Maximum Number of Drives
Number of Cartridges in Magazines
Figure 2-1 Model Number Identification Scheme
This manual applies to all models. The installation and operation of the various
models is virtually identical. Differences among the models are noted where required.
2.6 Major Features
2.6.1 Cabinet
The cabinet provides easy access for upgrades and field service while the library is
installed in a standard 19” equipment rack. Tape drives and Power Supply Modules
(PSMs) all plug into the rear of the library, providing all power and data connections.
2.6.2 Front Panel Components
The library’s functions can be controlled through the Control Panel. Manually
operated I/O Ports slide out from the front panel, and are electronically locked. Bulk
loading can be accomplished by removing the right or left storage matrix. Figure 2-2
shows the various features of the front panel. The library may be configured to
continue operation while either of the I/O Port(s) is extended.
2-4

Left Side
I/O Port
Optional
Right Side
I/O Port
Control Panel
Key Locks
Left Side
Storage Matrix
Optional
Right Side
Storage Matrix
Figure 2-2 RLS-85XX Front Panel Details
2.6.2.1 Control Panel
The Control Panel is a color LCD with LED backlight and touch screen overlay. The
operator may use the Control Panel menus to configure and operate the RLS and
monitor its status. The following information is an example of what can be displayed:
•Model number and all firmware revisions
•Extensive menu system for configuration, maintenance and operation
•Operational status (indicates all active cartridge movements)
•History log which stores the most recent commands and status
•Error conditions
•Library partition information
•Inventory information
2.6.2.2 I/O Port
The operator gains access to the media by unlocking the I/O Port through the Control
Panel and then manually extending the I/O Port. When closed, the I/O Port is locked
electronically. Once extended, four cartridges may be removed or inserted. The library
status may be configured to be "not ready" when the I/O Port is extended. Under this
configuration, while the door is open, the RLS can respond to a host interface
command with a busy status, a not ready status or it can accept the command and
wait for door closure to complete the command.
511000 Rev. F Product Description 2-5

Figure 2-3 I/O Port Extended
2.6.2.3 Security
The storage matrix must be secured with a key operated lock for the library to
operate.
2.6.2.4 Power Switch and Indicator
The library’s power status is indicated by a blue LED Power Indicator button on the
front of the library that illuminates when the power is applied. Standby/Soft-power is
controlled by a switch located inside the LED Power Indicator button. During standby
mode the center of the button flashes blue at the rate of one blink approximately
every two seconds. During power on mode the button is fully illuminated.
The primary power for the library is controlled by a rocker switch located on the rear
panel.
2-6 Product Description 511000 Rev. F

2.6.3 Rear Panel Components
Tape Drives
Power
Supply
Modules
Power Inlet, Line Fuse and Rocker Switch
Expansion
Card Slots
Control
Electronics
Figure 2-4 RLS-85XX Rear Panel Details
2.6.3.1 N+1 Power Option
The RLS libraries have a distributed power system. The RLS-85XX models can have
up to four power supply modules (PSM), which accommodate a range of power
requirements. The RLS-8350 models can accommodate a maximum of two PSM’s. The
N+1 Option adds an extra module, ensuring system redundancy.
The PSMs operate in parallel, sharing the load. This reduces the stress on the
individual power supplies and greatly extends their service life. When the N+1 Option
is installed, the library will continue to operate if one module fails. The remaining
power supply module or modules will power the RLS indefinitely. The library and
tape drives will continue to function, uninterrupted by the failure and subsequent
replacement of the failed PSM. A green "Power Good" LED indicates that a PSM is
operating properly. A failed PSM causes an alarm condition.
All PSMs supply regulated 24-volts DC to the RLS-8350/85XX. The unit is powered
from AC mains of 100- to 240-volts, 50 or 60 Hertz.
511000 Rev. F Product Description 2-7

Figure 2-5 The Power Supply Module (PSM)
2.6.4 Medium-changer Components
Storage Slots
Tape Drives
I/O Port
Robotics
Figure 2-6 RLS Components (RLS-85XX shown)
2.6.4.1 Storage Slots
Each RLS model utilizes a left and right fixed matrix of storage slots. The RLS-85XX
models contains up to 60 cartridges on the right side and 54 on the left. The RLS-8350
contains up to 28 cartridges on the right side and 22 on the left. The storage matrices
may be removed from the unit for bulk loading or removal of cartridges.
2-8 Product Description 511000 Rev. F