Quantum LTO-4 User Manual

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Quantum LTO-4 Half-Height Tape Drive User’s Guide, P/N 20020140-001, November 2007. Product of USA.

Quantum Corporation provides this publication “as is” without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability or fitness for a particular purpose. Quantum Corporation may revise this publication from time to time without notice.

Your right to copy this manual is limited by copyright law. Making copies or adaptations without prior written authorization of Quantum Corporation is prohibited by law and constitutes a punishable violation of the law.

TRADEMARK STATEMENT

Quantum and the Quantum logo are registered trademarks of Quantum Corporation.

Other trademarks may be mentioned herein which belong to other companies.

Preface viii

Chapter 1 Introduction 1

Overview............................................................................................................. 1

Drive Models...................................................................................................... 2

Internal ......................................................................................................... 2

Tabletop ....................................................................................................... 2

Features ............................................................................................................... 3

Chapter 2 Installation Procedures 5

Before Installing the LTO-4 Half-Height Tape Drive .................................. 6

Handling Precautions and Installation Guidelines ............................... 6

Preinstallation Requirements.................................................................... 7

Unpacking and Inspecting the Drive....................................................... 7

Installing the Internal LTO-4 Half-Height Tape Drive ................................ 8

Mounting the Internal Tape Drive ........................................................... 9

Connecting the Internal Drive Interface and DC Power Cables........ 10

Restarting the Internal Tape Drive System........................................... 11

Installing the Tabletop LTO-4 Half-Height Tape Drive............................. 12

Connecting the Tabletop Drive Interface and AC Power Cables ...... 12

LTO-4 Half-Height Tape Drive User’s Guide iii

Restarting the Tabletop Drive System ................................................... 13

Installing the LTO Driver Software...............................................................14

Registering the LTO-4 Half-Height Tape Drive ..........................................14

Chapter 3 Operation 15

Understanding the Front Panel Display....................................................... 15

Using LTO Tape Cartridges ........................................................................... 18

Loading a Tape Cartridge........................................................................ 18

Unloading a Tape Cartridge ................................................................... 18

Write Protecting a Tape Cartridge ......................................................... 18

Tape Cartridge Care and Maintenance ................................................. 19

Cleaning the Tape Drive .................................................................................20

Performing an Emergency Cartridge Eject...................................................22

Chapter 4 Theory 23

Track Layout..................................................................................................... 23

Recording Method ...........................................................................................25

Data Buffer ........................................................................................................ 25

Data Integrity.................................................................................................... 25

Error-correction Code (ECC)...................................................................26

Servo-tracking Faults ............................................................................... 27

Data Compression............................................................................................27

Data Compression Considerations.........................................................28

Intelligent Data Compression ................................................................. 29

Chapter 5 Specifications 31

Physical Specifications ....................................................................................32

Power Specifications........................................................................................ 34

Drive Performance Specifications.................................................................. 35

Environmental Requirements ........................................................................37

Injected Noise Specifications..........................................................................38

Reliability Specifications ................................................................................. 38

Mean Time Between Failures..................................................................39

Mean Time to Replace.............................................................................. 39

LTO Cartridge Specifications ......................................................................... 39

Environmental Considerations............................................................... 39

LTO-4 Half-Height Tape Drive User’s Guide iv

Cartridge Memory....................................................................................40

Cartridge Reliability ................................................................................. 40

Chapter 6 Troubleshooting Guide 41

Installation Best Practices ............................................................................... 41

Following SCSI Best Practices................................................................. 41

Using a Serial-attached SCSI Host Bus Adapter ..................................41

HBA Preinstallation Checks.................................................................... 42

Troubleshooting Suggestions.........................................................................42

Computer Does Not Start ........................................................................ 42

Computer Hardware Does Not Recognize the Tape Drive................ 43

Computer Software Does Not Recognized the Tape Drive................ 48

Drive Does Not Load the Tape Cartridge............................................. 50

Drive Does Not Eject the Tape Cartridge.............................................. 52

Slow Backup Operations ......................................................................... 54

Failed Operations TapeAlert Messages................................................. 56

Appendix A Installation Checklists 63

Internal LTO-4 Half-Height Tape Drive Quick Start ................................. 64

Tabletop LTO-4 Half-Height Tape Drive Quick Start ................................ 65

Appendix B Disposal of Electrical & Electronic Equipment 66

Appendix C Regulatory Compliances 67

Safety Compliances.......................................................................................... 68

Electromagnetic Compatibility (EMC) Compliances ................................. 69

Index 71

LTO-4 Half-Height Tape Drive User’s Guide v

Figures

Figure 1 Internal LTO-4 Half-Height Tape Drive ................................... 2

Figure 2 Acceptable Mounting Orientation............................................. 9

Figure 3 Internal Tape Drive Mounting Holes...................................... 10

Figure 4 Internal Drive Interface and Power Connectors.................... 11

Figure 5 Tabletop Drive Interface and Power Cable Connectors....... 13

Figure 6 Front Panel Display ................................................................... 16

Figure 7 Ultrium Tape Cartridge Write-Protect Switch....................... 19

Figure 8 Layout of the Tracks on LTO Ultrium Tapes......................... 24

Figure 9 LTO-4 Half-Height Tape Drive Dimensions.......................... 33

LTO-4 Half-Height Tape Drive User’s Guide vi

Tables

Table 1 Performance Features and Capabilities .................................... 3

Table 2 Front Panel Display Indications............................................... 16

Table 3 Physical Specifications............................................................... 32

Table 4 Voltage and Current Specifications......................................... 34

Table 5 Power Dissipation ...................................................................... 34

Table 6 Drive Performance Specifications............................................ 35

Table 7 Environmental Requirements .................................................. 37

Table 8 Reliability Specifications ........................................................... 38

Table 9 Environmental Tolerances ........................................................ 40

LTO-4 Half-Height Tape Drive User’s Guide vii

Preface

Audience

Purpose

Document Organization

This guide is written for users of the Quantum LTO-4 Half-Height Tape Drive.

This guide provides information about the LTO-4 Half-Height Tape Drive including:

• Installing the drive

• Basic drive operations

• Maintenance

• Specifications

• Troubleshooting

This guide is organized as follows:

• Chapter 1, technologies, and summarizes the drive’s key features.

• Chapter 2, unpacking tips, and installation instructions.

• Chapter 3, drive.

Introduction, provides an overview of LTO and Ultrium

Installation Procedures, describes handling precautions,

Operation, describes the operation and maintenance of the

LTO-4 Half-Height Tape Drive User’s Guide viii

Preface

• Chapter 4, Theory, describes the theory of operation behind the drive,

including the technology used in various drive components.

Notational Conventions

• Chapter 5,

• Chapter 6,

Specifications, provides drive and cartridge specifications.

Troubleshooting Guide provides troubleshooting

procedures you can follow if you encounter a problem with your drive.

• Appendix A,

Installation Checklists, provides abbreviated quick-start

checklists for users who are already familiar with the installation procedures.

• Appendix B, Disposal of Electrical & Electronic Equipment

, provides instructions for proper disposal of unwanted electrical and electronic equipment.

• Appendix C,

Regulatory Compliances, identifies drive compliance

with safety and EMC regulations.

This guide also has an index.

This guide uses the following conventions:

Note: Notes emphasize important information related to the main

topic.

Tech Tip: Tech Tips provide technical information which may be

helpful in performing the procedure.

Caution: Cautions indicate potential hazards to equipment and are

included to prevent damage to equipment.

Warning: Warnings indicate potential hazards to personal safety and

are included to prevent injury.

LTO-4 Half-Height Tape Drive User’s Guide ix

Preface

Overview

Chapter 1

1Introduction

This chapter provides an introductory overview of the Quantum LTO-4 Half-Height Tape Drive. Topics include:

• Overview

• Drive Models

• Features

The Quantum LTO-4 Half-Height Tape Drive is a high-performance 16channel tape drive that complies with the LTO interchange specifications. The drive is suited for mid-range to high-end servers, mainframe systems, and tape library automation systems.

The LTO-4 Half-Height Tape Drive uses Ultrium data cartridges. Its capacity is maximized using intelligent data compression. The drive has a native capacity of 800 Gbytes (1,600 Gbytes assuming 2:1 data compression).

LTO-4 Half-Height Tape Drive User’s Guide 1

Drive Models

Chapter 1 Introduction

Drive Models

The LTO-4 Half-Height Tape Drive has a 5¼-inch half-height form factor with automatic electromechanical cartridge soft load. It is available in two models:

• Internal

• Tabletop

Internal 1

Tabletop 1

Figure 1 Internal LTO-4 HalfHeight Tape Drive

The internal model (see figure 1) is a 5¼-inch drive that you can install inside the drive bay of a:

• Computer workstation or server system

• Quantum rackmount drive enclosure

The tabletop model is a 5¼-inch drive that is already mounted inside a stand-alone external drive enclosure with a built-in power supply.

LTO-4 Half-Height Tape Drive User’s Guide 2

Features

Chapter 1 Introduction

Features

Table 1 describes the key performance features and capabilities of the

LTO-4 Half-Height Tape Drive.

Table 1 Performance Features and Capabilities

Feature Description

Cartridge memory Stores pertinent information about the

media to enable fast cartridge loading

Chassis Shock damped and isolated

Data buffering 128 Mbytes for high performance

Head positioner Patented proprietary mechanism for

increased data integrity

Intelligent data compression

Interface Serial-attached SCSI (SAS)

LSI circuitry Custom designed for fast, efficient data

Native data transfer rate Up to 120 Mbytes per second

Read channel Third generation for increased maturity

RISC processors Provide fast, efficient data processing

Analyzes compression factors before recording to maximize performance and capacity

processing

and data integrity

SmartVerify Includes two levels of ECC for extra data

safety and error protection

Supported platforms A wide variety of Windows and UNIX

systems

TapeAlert Monitors and reports drive performance

Tape picking Enhanced implementation for increased

reliability

LTO-4 Half-Height Tape Drive User’s Guide 3

Chapter 1 Introduction

Features

Feature Description

Variable-speed transfer Variable speeds for matching with the host

to:

• Optimize data transfers

• Shorten backup times

• Increase reliability

LTO-4 Half-Height Tape Drive User’s Guide 4

Chapter 2

2Installation Procedures

This chapter provides detailed installation instructions for both the internal and tabletop models of the Quantum LTO-4 Half-Height Tape Drive, including:

• Before Installing the LTO-4 Half-Height Tape Drive

• Handling Precautions and Installation Guidelines

• Preinstallation Requirements on page 7

• Unpacking and Inspecting the

• Detailed procedures for:

• Installing the Internal LTO-4 Half-Height Tape Drive

• Installing the Tabletop LTO-4 Half-Height Tape Drive

• Installing the LTO Driver Software

required

• Registering the LTO-4 Half-Height Tape Drive

Optionally, experienced users who are familiar with installing the LTO-4 Half-Height Tape Drive can refer to the quick-start checklists in

appendix A

installation instructions, with references to the corresponding detailed procedures in this chapter.

on page 63 of this guide. Each checklist provides abbreviated

Drive on page 7

on page 14, optional/when

, which includes:

on page 8

on page 12

on page 14

LTO-4 Half-Height Tape Drive User’s Guide 5

Chapter 2 Installation Procedures

Before Installing the LTO-4 Half-Height Tape Drive

Handling Precautions and Installation Guidelines 2

Always observe the following precautions and guidelines when handling and installing LTO-4 Half-Height Tape Drives:

• Internal, at all times

• Tabletop, when removed from its free-standing enclosure

Handling Precautions

• Internal drives have exposed components that are sensitive to static electricity. To reduce the possibility of damage from static discharge, the drives are packaged in a protective antistatic bag. Do not remove the drive from the antistatic bag until you are ready to install it.

• Wear an ESD-preventive grounding wrist strap or observe similar ESD precautions when working with the drive. Be sure the wrist strap makes good skin contact. Do not remove the wrist strap until you finish working with the drive.

Also, avoid contact between the drive, other equipment, and clothing. The wrist strap only protects the equipment from ESD voltages on the body; ESD voltages on clothing can still cause damage.

• Before removing the drive from the antistatic bag, touch a grounded metal surface to discharge any static electricity buildup from your body.

(continued)

LTO-4 Half-Height Tape Drive User’s Guide 6

Chapter 2 Installation Procedures

Before Installing the LTO-4 Half-Height Tape Drive

Preinstallation Requirements 2

Handling Precautions (continued)

• Handle the drive by its sides rather than by the top cover to reduce the risk of dropping the drive or damaging it during installation.

• Either lay the drive on a nonconductive surface or put it back inside the protective antistatic bag to reduce the chance of damage from static discharge

Installation Guidelines

Due to the high speed of the LTO-4 HalfHeight Tape Drive, do not connect more than one LTO-4 drive to the same channel on a host SCSI adapter.

Before installing the LTO-4 Half-Height Tape Drive, make sure you have:

• A serial SCSI host bus adapter (HBA) installed and properly configured in the host computer

• Interface components, either:

• 7-pin 1x SATA style interface cable for an internal drive

• 26-pin SFF-8088 mini-SAS style interface cable for a tabletop

drive

• Backup application software that supports the tape drive. For a list of the backup software applications that have been tested with the LTO4 Half-Height Tape Drive, please visit our website at:

Unpacking and Inspecting the Drive 2

www.quantum.com/support

Although each LTO-4 Half-Height Tape Drive is inspected and carefully packaged at the factory, damage can occur:

• In shipment

• When being unpacked

LTO-4 Half-Height Tape Drive User’s Guide 7

Chapter 2 Installation Procedures

Installing the Internal LTO-4 Half-Height Tape Drive

Observe the handling precautions listed in Handling Precautions and

Installation Guidelines and carefully unpack and inspect the LTO-4 Half-

Height Tape Drive as follows:

1 Visually inspect the shipping container and notify your carrier

immediately of any damage.

2 Place the shipping container on a flat, clean, stable surface and

carefully remove the contents.

3 Visually inspect the LTO-4 Half-Height Tape Drive and notify your

Quantum representative immediately of any damage.

4 Always save the shipping container and packing materials for any

future reshipment.

Installing the Internal LTO-4 Half-Height Tape Drive

To install the internal LTO-4 Half-Height Tape Drive, complete the following procedures in the order presented:

1 M

ounting the Internal Tape Drive

2 Connecting the Internal Drive Interface and DC Power Cables on

page 10

3 Restarting the Internal

4 Installing the LTO Driver Software

5 Registering the LTO-4 Half-Height Tape Drive

Tape Drive System on page 11

on page 14, if required

on page 14

LTO-4 Half-Height Tape Drive User’s Guide 8

Chapter 2 Installation Procedures

YES YES YES NO

Installing the Internal LTO-4 Half-Height Tape Drive

Mounting the Internal Tape Drive 2

Figure 2 Acceptable Mounting Orientation

You can mount the internal LTO-4 Half-Height Tape Drive either horizontally or vertically, but not upside down (see figure 2

IF you mount the drive . . . THEN the . . .

horizontally, base of the drive must be within 15

degrees of horizontal.

vertically, side of the drive should be within 5

degrees of horizontal.

Mount the drive in a 5.25-inch, half-height drive bay as follows:

1 As required:

a Save and close your open files and terminate all running

applications.

b Shut down the workstation or server system.

c Disconnect the system AC power cord from the facility AC

power receptacle.

2 Remove the cover from the workstation or server system.

Note: See your computer manufacturer’s instructions for the

proper procedures to remove the cover.

3 Select an available 5.25-inch half-height bay and, if required, remove

the bay cover.

LTO-4 Half-Height Tape Drive User’s Guide 9

Figure 3 Internal Tape Drive

Lower mounting holes

Upper mounting holes

Mounting Holes

Chapter 2 Installation Procedures

Installing the Internal LTO-4 Half-Height Tape Drive

4 Position the drive in the bay and align either the upper or lower

mounting holes—whichever is appropriate—with the holes in the chassis (see figure 3).

5 Secure the drive using two M3.0 X 5 metric screws on each side.

Caution: Using screws longer than 5 mm can damage the drive.

Do not use screws longer than 5 mm to secure the internal LTO-4 Half-Height Tape Drive.

After mounting the internal LTO-4 Half-Height Tape Drive, proceed to

onnecting the Internal Drive Interface and DC Power Cables in the

following subsection.

Connecting the Internal Drive Interface and DC Power Cables 2

As shown in figure 4, the rear panel of the internal LTO-4 Half-Height Tape Drive has connectors for:

• A 7-pin 1x SATA style interface cable

• A serial library interface cable

• The internal drive DC power cable

Connect the interface and DC power cables to the internal drive as follows:

1 Verify that the system is shut down and the AC power cord is

disconnected from the facility AC power receptacle.

2 Attach the internal SAS interface cable to the 7-pin 1x SATA style SAS

connector on the back of the drive.

LTO-4 Half-Height Tape Drive User’s Guide 10

Figure 4 Internal Drive

Serial library port

DC power connector 7-pin 1x SATA style SAS connector

Interface and Power Connectors

Chapter 2 Installation Procedures

Installing the Internal LTO-4 Half-Height Tape Drive

3 If you are installing the internal LTO-4 Half-Height Tape Drive in a

tape library system, connect the RS-422 serial interface cable to the serial library port on the back of the drive. (The serial library port is not used in workstation or server systems.)

4 Connect the internal drive DC power cable to the DC power

connector on the back of the drive.

Restarting the Internal Tape Drive System 2

5 Reinstall the system cover.

6 Reconnect the system AC power cord to the facility AC power

receptacle.

After connecting the interface and DC power cables, proceed to

Restarting the Internal

Tape Drive System in the following subsection.

After connecting the internal drive interface and DC power cables:

1 Restart the workstation or server system.

2 Refer to the operating procedures in chapter 3

to verify that the internal LTO-4 Half-Height Tape Drive comes on and completes the Power On Self Test (POST) functions.

3 As required, proceed to either:

• Installing the LTO Driver Software

• Registering the LTO-4 Half-Height Tape Drive

on page 14

LTO-4 Half-Height Tape Drive User’s Guide 11

Chapter 2 Installation Procedures

Installing the Tabletop LTO-4 Half-Height Tape Drive

The tabletop LTO-4 Half-Height Tape Drive is a compact external drive that connects to the host computer through an external serial-attached SCSI (SAS) port.

Do not attempt to install the LTO-4 Half-Height Tape Drive until you have reviewed Handling Precautions and Installation Guidelines page 6.

To install the tabletop LTO-4 Half-Height Tape Drive, complete the following procedures in the order presented:

1 C

onnecting the Tabletop Drive Interface and AC Power Cables on

page 12

2 C

onnecting the Tabletop Drive Interface and AC Power Cables on

page 12

3 R

estarting the Tabletop Drive System on page 13

Connecting the Tabletop Drive Interface and AC Power Cables 2

4 Installing the LTO Driver Software

5 Registering the LTO-4 Half-Height Tape Drive

As shown in figure 5, the rear panel of the tabletop LTO-4 Half-Height Tape Drive has connectors for:

• A 26-pin SFF-8088 mini-SAS style interface cable

•The AC power cable

Connect the interface and AC power cables to the tabletop drive as follows:

1 As required:

a Save and close your open files and terminate all running

applications.

b Shut down the workstation or server system.

c Disconnect the system AC power cord from the facility AC

power receptacle.

on page 14, if required

on page 14

LTO-4 Half-Height Tape Drive User’s Guide 12

Figure 5 Tabletop Drive

26-pin SFF-8088 mini-SAS connector

AC power switch

AC power connector

Interface and Power Cable Connectors

Chapter 2 Installation Procedures

Installing the Tabletop LTO-4 Half-Height Tape Drive

2 Attach the external SAS interface cable to the 26-pin SFF-8088 mini-

SAS connector on the back of the drive.

3 Verify that the tabletop LTO-4 Half-Height Tape Drive AC power

switch is set to the off position, and connect the AC power cord to the power connector on the back of the drive.

4 Connect the drive AC power cord to the facility AC power receptacle.

5 Reconnect the workstation or server system AC power cord to the

facility AC power receptacle.

After connecting the tabletop drive interface and AC power cables, proceed to R

estarting the Tabletop Drive System in the following

subsection.

Restarting the Tabletop Drive System 2

After connecting the tabletop drive interface and AC power cables:

1 Set the tabletop LTO-4 Half-Height Tape Drive power switch to the

on position.

2 Restart the workstation or server system.

3 Refer to the operating procedures in chapter 3

to verify that the tabletop LTO-4 Half-Height Tape Drive comes on and completes the Power On Self Test (POST) functions.

LTO-4 Half-Height Tape Drive User’s Guide 13

As required, proceed to either:

• Installing the LTO Driver Software

• Registering the LTO-4 Half-Height Tape Drive

Installing the LTO Driver Software

Chapter 2 Installation Procedures

Installing the LTO Driver Software

If you intend to use the LTO-4 Half-Height Tape Drive with the Microsoft 2003, Windows XP appropriate version of the LTO driver software. (See the Downloads page for LTO-4 drivers under Standalone Tape Drives on the Quantum support website at www.quantum.com/support

Note: The LTO driver software is not necessary with commercial

native backup applet on a Windows 2000, Windows Server®

backup application software.

, or Windows Vista operating system, install the

Registering the LTO-4 Half-Height Tape Drive

After installing the LTO-4 Half-Height Tape Drive, be sure to register it via the Quantum website at:

www.quantum.com/registration

Registering the drive ensures that you will receive the latest technical information about the drive, as well as other product, service, and support information.

LTO-4 Half-Height Tape Drive User’s Guide 14

Chapter 3

3Operation

This chapter describes how to operate the LTO-4 Half-Height Tape Drive.

Topics covered in this chapter are:

• Understanding the Front Panel Displa

• Using LTO Tape Cartridges on page 18

• Cleaning the Tape Drive

• Performing an Emergency

on page 20

Cartridge Eject on page 22

Understanding the Front Panel Display

As shown in figure 6, to reflect the operating condition of the drive, the LTO-4 Half-Height Tape Drive front panel display has:

• A seven-segment LED display that provides a single character code for status, diagnostic, and maintenance functions

• An LED dot display that augments the seven-segment LED

• A two-color (amber/green) status LED

The on/steady, on/flashing, or off condition of the front panel LEDs indicate the various drive conditions as shown in table 2

LTO-4 Half-Height Tape Drive User’s Guide 15

Figure 6 Front Panel Display

Seven-segment LED

LED dot

Two-color status LED

Chapter 3 Operation

Understanding the Front Panel Display

Table 2 Front Panel Display Indications

Seven-

Drive Condition

segment

LED LED Dot

Two-color

Status LED

Powered off Blank Off Off

Powered on Blank Off Green

Initializing/power-on self-tests underway

Successful initialization/ power-on self-tests

Active/busy or loading or unloading a cartridge

Ready with cartridge

Post

Flashing Amber

pattern

Blank On for 3

Green

seconds

Blank Off Flashing

green

Blank Off Green

loaded

Write-protected cartridge loaded

Downloading or updating firmware

Running diagnostics Function-

P Off Flashing

amber

F Flashing Flashing

amber

Flashing Amber

dependent

Cleaning required C On Flashing

amber

Cleaning operation in progress

Expired cleaning cartridge detected

LTO-4 Half-Height Tape Drive User’s Guide 16

C Flashing Flashing

green

7 Off Flashing

amber

Chapter 3 Operation

Understanding the Front Panel Display

Seven-

Drive Condition

segment

LED LED Dot

Two-color

Status LED

Temperature fault 1 Off Flashing

amber

Power fault 2 Off Flashing

amber

Firmware fault 3 Off Flashing

amber

Firmware/hardware fault 4 Off Flashing

amber

Hardware fault 5 Off Flashing

amber

Media or hardware fault 6 Off Flashing

amber

Media fault 7 Off Flashing

amber

Interface fault 8 Off Flashing

amber

Degraded operation A Off Flashing

amber

Cartridge load or unload failure

Maintenance mode dump

Failure-

Off Flashing

dependent

Blank Flashing Off

amber

available

LTO-4 Half-Height Tape Drive User’s Guide 17

Using LTO Tape Cartridges

Chapter 3 Operation

Using LTO Tape Cartridges

Loading a Tape Cartridge 3

Unloading a Tape Cartridge 3

Write Protecting a Tape Cartridge 3

To load an Ultrium tape cartridge into the LTO-4 Half-Height Tape Drive, gently insert the cartridge into the slot and then either:

• Push the cartridge further into the drive until the drive senses the cartridge and automatically completes the load operation.

• Use a library or host command to complete the load operation.

To unload an Ultrium tape cartridge from the LTO-4 Half-Height Tape Drive, either:

• Use a library or host command to unload the tape.

• Press the Eject button on the front panel of the drive.

Caution: After you press the Eject button, several minutes can

elapse before the drive ejects the cartridge. Do not power down the tape drive or the host computer until the drive has completely ejected the cartridge.

Ultrium tape cartridges have a sliding write-protect switch at the rightrear corner as shown in figure 7

Sliding the write-protect switch toward the . . . Enables data to be . . .

center of the cartridge (the Locked position),

corner of the cartridge (the Unlocked position),

LTO-4 Half-Height Tape Drive User’s Guide 18

read from the cartridge, but not written to it. (This is the write-protected position.)

both read from and written to the cartridge. (This is the write-enabled position.)

Figure 7 Ultrium Tape

Write protect switch (unlocked)

Unlocked

Locked

Front

Cartridge Write-Protect Switch

Chapter 3 Operation

Using LTO Tape Cartridges

Tape Cartridge Care and Maintenance 3

Observe the following precautions to protect the data on your Ultrium tape cartridges:

Always:

• Remove the cartridge from the drive when not in use and store it in its protective case.

• Avoid dropping the cartridge. This can damage components inside the cartridge, possibly rendering the tape unusable. If you drop a tape cartridge, open the cartridge door and make sure that the leader pin is in the correct position.

• Re-tension a dropped cartridge before using.

• Keep the cartridge away from:

• Direct sunlight and heat sources, such as radiators, heaters, or warm air ducts.

• Sources of electromagnetic fields, such as telephones, computer monitors, dictation equipment, mechanical or printing calculators, motors, magnetic tools, and bulk erasers.

LTO-4 Half-Height Tape Drive User’s Guide 19

Chapter 3 Operation

Cleaning the Tape Drive

Do not:

• Expose the cartridge to dirt, dust or moisture.

• Touch the tape media within the cartridge.

• Bulk erase Ultrium tape cartridges. LTO tape cartridges have prewritten servo patterns that cannot be reformatted by the tape drive. A bulk erase operation would make them unusable.

• Use tape cartridges outside the specified operating conditions: 10 humidity.

If a tape cartridge has been exposed to conditions outside the specified range, recondition the tape before using in the operating environment by exposing it to the operating environment for a time equal to or greater than the time it was outside the operating environment, up to a maximum of 24 hours. Then re-tension the tape to stabilize the tape pack for better performance.

C to 40o C, 20% to 80% relative

Cleaning the Tape Drive

Excessive tape debris or other material can accumulate on the tape heads if the drive is:

• Used with non-approved media

• Operated in a hot, dusty environment

When this happens, the drive can:

• Experience excessive errors while reading or writing

• Display the letter “C” on the seven-segment LED, illuminate the amber status LED continuously, and flash the LED dot during operation

This means that the drive needs to be cleaned.

The LTO cleaning cartridge has the same dimensions as the tape cartridge and contains an LTO Cartridge Memory (LTO-CM), but is loaded with

LTO-4 Half-Height Tape Drive User’s Guide 20

Chapter 3 Operation

Cleaning the Tape Drive

cleaning media instead of recording media. Always keep the LTO cleaning cartridge in its protective case when not in use.

Procedure

To clean the LTO-4 Half-Height Tape Drive:

1 Load an LTO cleaning cartridge into the tape drive.

2 Observe that the seven-segment LED displays the letter “C” and both

the LED dot and the green status LED are flashing during the cleaning process.

Note: If the LTO-4 Half-Height Tape Drive does not recognize

the cartridge as an LTO cleaning cartridge, the drive stops the cleaning process and ejects the cartridge.

3 After the cleaning process completes, depending on the drive

configuration, either:

a The drive automatically ejects the LTO cleaning cartridge, or

b You must press the Eject button to eject the LTO cleaning

cartridge.

4 Write the date on the cartridge label for future reference.

Each time you use the LTO cleaning cartridge, the cleaning media advances to a new, unused section. After approximately 50 cleanings, all of the media will be used up and the LTO-4 Half-Height Tape Drive:

• Displays the number “7” on the seven-segment LED

• Turns off the LED dot

• Flashes the amber status LED

• Ejects the LTO cleaning cartridge

Always discard used-up LTO cleaning cartridges.

Note: If the letter “C” and flashing amber status LED reappears

continuously within 24 hours after a cleaning cycle, perform the cleaning procedure again. If, after three cleaning cycles in a 72-hour period, the condition persists, contact Quantum Technical Support.

LTO-4 Half-Height Tape Drive User’s Guide 21

Performing an Emergency Cartridge Eject

If the LTO-4 Half-Height Tape Drive stops communicating with the host computer, use the following procedure eject a cartridge (if necessary).

Caution: When you perform an emergency cartridge eject, any data

in the drive or host buffers will not be written to the tape and the tape record may not be correctly terminated with an end-of-data mark. If the end-of-data mark is not written to the tape, you will not be able to append any data to that tape unless you overwrite the existing data on the tape.

To perform an emergency cartridge eject, hold down the Eject button between 5 to 15 seconds, and then release it. The tape drive firmware ignores all outstanding SCSI commands and ejects the tape.

If the emergency cartridge eject procedure does not eject the cartridge from the drive, see Drive Does Not Eject the Tape Cartridge

Chapter 3 Operation

on page 77.

LTO-4 Half-Height Tape Drive User’s Guide 22

Chapter 4

4Theory

This chapter describes operational theories used in the LTO-4 HalfHeight Tape Drive.

The topics covered in this chapter are:

• Track Layout

• Recording Method on page 25

• Data Buffer

• Data Integrity

• Data Compression

on page 25

on page 27

Track Layout

With the LTO-4 Half-Height Tape Drive, there are 704 data tracks on the LTO tape, numbered 0 through 703. Data track 703 is the track closest to the bottom edge of the tape (the reference edge).

The area between adjacent servo bands is a data band. There are 4 data bands, each of which includes 176 data tracks. The data bands are numbered 2, 0, 1, 3. Data band 2 is closest to the bottom edge of the tape.

LTO-4 Half-Height Tape Drive User’s Guide 23

Chapter 4 Theory

Tape edge

Even # wrap

Servo band

Odd # wrap

Tape edge

Even # wrap

Servo band

Odd # wrap

Sub-band 0

Sub-band 15

Sub-bands 1 through 14 (not shown)

Beginning of tape (BOT)

End of tape (EOT)

Data Band

Track Layout

A track group is a set of tracks that is recorded concurrently. The sets of 11 data tracks in a data band are data sub-bands. There are 16 data subbands per data band. The data tracks are accessed in a serpentine manner.

A wrap is a track group recorded in the physical forward or physical reverse direction. The wraps are recorded in a serpentine fashion starting in data band 0. The tape contains 56 track groups, 28 written in the forward direction and 28 written in the reverse direction. Even-numbered wraps are recorded in the forward direction (BOT to EOT), and oddnumbered wraps are recorded in the reverse direction (EOT to BOT).

Figure 8 Layout of the Tracks on LTO Ultrium Tapes

Figure 8

shows the layout of data on an LTO tape.

LTO-4 Half-Height Tape Drive User’s Guide 24

Recording Method

Data Buffer

Chapter 4 Theory

Recording Method

The LTO-4 Half-Height Tape Drive records data using write-equalized (0,13/11) Run Length Limited (RLL) code. RLL (0,13/11) Data bits are defined as follows:

•

ONE is represented by a flux transition at the center of a bit-cell.

•

ZERO is represented by no flux transition in the bit-cell.

In its default configuration, the LTO-4 Half-Height Tape Drive has a 128Mbyte buffer. The buffer controller has a burst transfer rate of 320 Mbytes/sec., and utilizes bank switching to achieve a maximum average bandwidth of nearly 240 Mbytes/sec. The high bandwidth is needed to support look-aside data compression in the case of compressible data being transferred from the SCSI.

Data Integrity

The mechanical and electrical design of the drive ensures that drive performance does not degrade over time. Changes in head alignment, head wear, component drift, and other factors are minimized to ensure that data integrity and interchange capability are not compromised. The drive also incorporates adaptive Finite Impulse Response (FIR) filters that modify the equalization of each read channel dynamically to compensate for many of those changes.

The error rate of the LTO-4 Half-Height Tape Drive is less than 1 hard error in 10

LTO-4 Half-Height Tape Drive User’s Guide 25

bits. The undetectable error rate is 1 in 1027 bits read.

Chapter 4 Theory

Data Integrity

Error-correction Code (ECC) 4

The use of Cyclic Redundancy Checking (CRC), two-level orthogonal Error Correction Coding (ECC) provides a very low probability of encountering a hard error. During the read process, ECC correction is performed on the fly without affecting tape streaming.

There are two levels of Error Correction Coding (ECC). These two levels are orthogonal — that is, an ECC codeword at one level intersects ECC codewords at the other level just once, which means there will be only one common symbol between them. The two levels are called C1 and C2.

C1 ECC

As data is written to memory from the data processing unit, the DMA/ ECC interface generates C1 ECC bytes and writes them to memory.

As data is written to tape, the C1 ECC is checked and an interrupt generated if there is an error. The C1 ECC read from memory is the ECC that is written to tape.

When data is read from tape and stored into memory, C1 ECC is checked and:

• If the C1 ECC is good, the “Valid” bit for the codeword pair is set.

• Otherwise, a pointer to the invalid codeword pair is passed to the C1 ECC correction engine.

• If the C1 ECC correction engine can correct the error, then the

corrected bytes are written to memory, and the Valid bit is set.

• Otherwise, the Valid bit is left cleared.

As data is read from memory to the data processor for decompression, the C1 ECC is again checked and an interrupt generated if it is not correct.

C2 ECC

C2 ECC involves three distinct operations:

Encoding: Generating C2 ECC bytes from data bytes (performed by

ECC coprocessor hardware).

Decoding: Generating ECC syndromes from data and ECC bytes,

testing for all-zeroes (performed by ECC coprocessor hardware).

LTO-4 Half-Height Tape Drive User’s Guide 26

Chapter 4 Theory

Data Compression

3 Correction: Generating corrected data from syndromes.

The correction depends on the number and types of errors involved:

• For one known C1 codeword pair in error in a subdata set (C2

codeword), the operation is performed by the ECC coprocessor hardware.

• For two or more known C1 codeword pairs in error, the matrix is

computed by firmware and the correction is performed by hardware.

• For one or more unknown C1 codeword pairs, syndromes are

generated by hardware, error location is computed by firmware, the matrix is computed by firmware and the correction is performed by hardware.

Servo-tracking Faults 4

Data Compression

During a write operation, if the servo system detects an error that may result in adjacent data tracks being overwritten, the write operation is aborted. The write operation will not continue until the correct servo tracking is re-established.

Typical data streams of text, graphics, software code, or other forms of data contain repeated information of some sort, whether it is at the text level where you can readily recognize regular repetitions of a single word, or at the binary level where the repetitions are in bits or bytes. Although most data is unique and random, the binary level data exhibits patterns of various sizes that repeat with varying degrees of regularity.

Storage efficiency is increased if the redundancies or repetition in the data are removed before the data is recorded to tape. Data compression technology significantly reduces or eliminates redundancies in data before recording the information to tape. This increases the amount of data that can be stored on a finite medium and increases the overall storage efficiency of the system.

With data compression, the redundant information in a data stream is identified and represented by codewords or symbols that allow the same

LTO-4 Half-Height Tape Drive User’s Guide 27

Chapter 4 Theory

Data Compression

data to be recorded in a fewer number of bits. These codewords or symbols point back to the original data string, using fewer characters to represent the strings. Because these smaller symbols are substituted for the longer strings of data, more data can be stored in the same physical space.

Some important benefits result from data compression in tape drives:

• The same amount of information can be stored on a smaller length of tape.

• More data can be stored on a given length of tape.

• Performance can more closely parallel to that of high-transfer-rate computers.

• More information can be transferred in the same time interval.

Data Compression Considerations 4

In an effective data-compression method, several factors are important:

• The amount of compression, which is measured by the compression ratio. This ratio compares the amount of uncompressed data to the amount of compressed data. It is obtained by dividing the size of the uncompressed data by the size of the compressed data.

• The speed with which data is compressed and decompressed relative to the host transfer rate.

• The types of data to be compressed.

• The data integrity of the compressed data.

The amount of compression possible in a data stream depends on factors such as:

• Data pattern

• Compression algorithm

• Pattern repetition length

• Pattern repetition frequency

• Object size (block of information to be compressed)

• Starting pattern chosen

LTO-4 Half-Height Tape Drive User’s Guide 28

Chapter 4 Theory

Data Compression

The transfer rate depends on factors such as:

• Compression ratio

•Drive buffer size

• Host computer input/output (I/O) speed

• Effective disc speeds of the host computer

• Record lengths that the host computer transmits

Data compression algorithms can be tailored to provide maximum compression for specific types of data. Because varying types of data are encountered in normal day-to-day operating circumstances, however, an effective data compression method for a tape drive must serve various data types. Additionally, the data compression method must adapt to different data types, automatically providing optimum handling for all types of data.

Intelligent Data Compression 4

The compressed capacity of the tape is maximized through the use of intelligent data compression. The intelligent data compression hardware determines the compressibility of each record. If the size of the record is larger after a compression attempt than the native (uncompressed) size, then the record is written in its native form.

The intelligent data compression utilizes two compression schemes:

• Scheme-1 is a LZ1-based compression scheme using a history buffer to achieve data compression.

• Scheme-2 is a pass-through compression scheme designed to pass uncompressible data through with minimal expansion.

There are three specific requirements for compliance with the LTO specification.

• The output data stream must be decompressible following LTO rules to create the input sequence of records and file marks perfectly.

• An LTO compressed data stream may not contain any of the eight reserved control symbols.

• While control symbols allow switching to Scheme 2, this should never be used by operational software because this capability is only for diagnostic and testing purposes.

LTO-4 Half-Height Tape Drive User’s Guide 29

Chapter 4 Theory

Data Compression

Software data compression should never be used because the built-in intelligent data compression of the LTO-4 Half-Height Tape Drive is much more efficient than software data compression.

The LTO-4 Half-Height Tape Drive uses a derivative of ALDC-2 lossless data compression that includes additional control codes for intelligent data compression.

LTO-4 Half-Height Tape Drive User’s Guide 30

Chapter 5

5Specifications

This chapter provides technical specifications for the LTO-4 Half-Height Tape Drive.

The topics covered in this chapter are:

• Physical Specifications

• Power Specifications on page 34

• Drive Performance Specifications

• Environmental Requirements

• Injected Noise Specifications

• Reliability Specifications

• LTO Cartridge Specifications

LTO-4 Half-Height Tape Drive User’s Guide 31

on page 38

on page 35

on page 37

on page 38

on page 39

Physical Specifications

Table 3 lists the physical specifications of the LTO-4 Half-Height Tape

Drive, which is shown in figure 9

Table 3 Physical Specifications

Chapter 5 Specifications

Physical Specifications

Internal Drive

Specification

Height 1.63 inches

(41.3 mm)

Width 5.76 inches

(146.30)

Length 8.56 inches

(217.50 mm)

(Max. to end of connector)

Weight 3.66 lbs.

(1.66 kg)

1.70 inches (43.1 mm)

5.87 inches (149.10 mm)

8.76 inches (222.57 mm)

(Max. to end of connector)

3.72 lbs. (1.69) kg)

Tabletop DriveWithout Bezel With Bezel

2.60 inches

66.2 mm)

8.35 inches (212.13 mm)

10.73 inches (272.49 mm)

8.00 lb. (3.63 kg)

LTO-4 Half-Height Tape Drive User’s Guide 32

Figure 9 LTO-4 Half-Height

TO CARTRIDGE CENTER FROM SIDE MOUNTING SURFACE

TO CARTRIDGE CENTER FROM BOTTOM MOUNTING SURFACE

Tape Drive Dimensions

Chapter 5 Specifications

Physical Specifications

LTO-4 Half-Height Tape Drive User’s Guide 33

Power Specifications

The tabletop LTO-4 Half-Height Tape Drive has a built-in 90-260 VAC (47-63 Hz) automatic switching power supply.

Maximum voltage and power specifications for the internal LTO-4 HalfHeight Tape Drive is listed in table 4 for other SCSI drives unless otherwise noted.

Chapter 5 Specifications

Power Specifications

. Specifications are the same as those

Table 4 Voltage and Current Specifications

Table 5 Power Dissipation

Specification +12 VDC +5 VDC

DC Voltage Tolerance 12.00 ± 10% 5.00 ± 5%

Non-operating max voltage

Max operating current

Continuous: Peak:

Standby current (max) 0.45 amps RMS 1.50 amps RMS*

Ripple (peak-to-peak) <

* RMS parameters measured at the power connector using a true RMS digital meter.

Power Specification Dissipation

Max Standby Power 12.5 watts RMS*

14 Volts peak 7 Volts peak

0.8 amps RMS

2.3 amps RMS (1 sec max)

100 mV < 100 mV

4.1 amps max RMS*

Max Continuous Operating Power 31 watts RMS*

LTO-4 Half-Height Tape Drive User’s Guide 34

Power Specification Dissipation

Max Peak Operating Power 36 watts RMS (1 sec max)

* RMS parameters measured at the power connector using a true RMS digital meter.

Drive Performance Specifications

Table 6 lists the performance specifications of the LTO-4 Half-Height

Tape Drive.

Chapter 5 Specifications

Drive Performance Specifications

Table 6 Drive Performance Specifications

Specification Value

Average data access time (650-m tape) from BOW (beginning of wrap)

Average rewind time (650-m tape)

Max rewind time (650-m tape)

Capacity LTO Ultrium 4 (680 m)

Cartridge unload time 25 seconds

Error recovery Read-after-write Reed Solomon

Flux density 13250 cells per mm

60 seconds

51 seconds

120 seconds

800 Gbytes (native)

ECC (2 levels)

LTO-4 Half-Height Tape Drive User’s Guide 35

Drive Performance Specifications

Specification Value

Head configuration 2 bumps

16 thin-film write heads per bump 16 MR read heads per bump 2 MR servo heads per bump

Chapter 5 Specifications

Maximum data access time

120 seconds

(650-m tape) from BOW

Maximum rewind time

115 seconds

(650-m tape)

Recording density 6,760 RLL-encoded ONEs per mm

Recording format Ultrium 16-channel (U-416)

Recording method 0, 13/11 RLL

Recording undetectable errors Less than 1 in 10

Recording unrecoverable errors Less than 1 in 10

Synchronous transfer rate

160 Mbytes per sec max

data bits

(burst)

Tape drive type LTO (Ultrium)

Tape speed Up to 6.07 meters per second

Track density 70 tracks per mm

Transfer rate (sustained) 120 Mbytes/second (max, native)

LTO-4 Half-Height Tape Drive User’s Guide 36

Environmental Requirements

Table 7 lists the environmental specifications of the LTO-4 Half-Height

Tape Drive.

Table 7 Environmental Requirements

Specification Operational Nonoperational

Chapter 5 Specifications

Environmental Requirements

Acoustic level idling (A-wt sum)

Acoustic level operational (A-wt sum)

Airflow requirements Internal: 9 CFM (front to back) N/A

Altitude max 10,000 feet MSL

Humidity gradient 10% per hour 10% per hour

Relative humidity 20% to 80% non-condensing 10% to 95% non-condensing

Shock (1/2 sine wave) 10 Gs peak, 11 msec 40 Gs peak, 11 msec

Temperature +50° to +104°F

Thermal gradient 11°C per hour (10-40°C) 11°C per hour (10-40°C)

Vibration (sweep test) 0.005 inches DA (5-43 Hz)

52 dBA maximum 5.0 LwA Bels —

57 dBA maximum 5.5 LwA Bels —

40,000 feet (power off)

(at 25°C)

–40° to +149°F

(+10° to + 40°C)

0.50 G peak (43–1000 Hz) sweep rate 5-1000Hz;

1.0 octave per minute

(–40° to + 66°C)

0.1 inches (5-–15Hz)

1.0 G (15–500 Hz)

1.0 octave per minute

LTO-4 Half-Height Tape Drive User’s Guide 37

Injected Noise Specifications

The internal drive operates without degradation of error rates with 100 mV of noise injected between the chassis and 0 V at the power connector at any frequency between 45 Hz and 20 MHz.

Reliability Specifications

The LTO-4 Half-Height Tape Drive is designed for maximum reliability and data integrity. Table 8

Chapter 5 Specifications

Injected Noise Specifications

lists the reliability specifications.

Table 8 Reliability Specifications

Specification Description

Cartridge load/eject 100,000 cartridge load/eject cycles (no thread)

Error recovery and control

Mean time between failures (MTBF)

Mean time to replace (MTTR)

Nonrecoverable error rate

• Error correction code techniques (C1 and C2 ECC)

• Read-after-write (RAW)

• Error monitoring and reporting (error log)

•Retry on

300,000 hours MTBF at 100% duty cycle: power applied and tape moving continuously (tabletop drive; 50,000 hours at full load and 25°C)

Less than 30 minutes

Less than 1 in 10

bits

LTO-4 Half-Height Tape Drive User’s Guide 38

Chapter 5 Specifications

LTO Cartridge Specifications

Mean Time Between Failures 5

Mean Time to Replace 5

The mean time between failures (MTBF) for the internal drive is specified at 300,000 hours minimum. This specification includes all power-on and operational time but excludes maintenance periods. Operational time is assumed to be 100% of the power-on time. Operational time is the time the tape is loaded.

The MTBF for the tabletop drive power supply is 50,000 hours with the unit operated at full load and 25°C.

Note: The MTBF rating does not represent any particular drive, but

is derived from a large database of test samples. Actual rates may vary from unit to unit.

The mean time to replace (MTTR) is the average time required by a qualified service technician to diagnose a defective drive and to install a replacement drive. The MTTR for LTO products is less than 0.5 hour (30 minutes).

The Quantum LTO drives are field-replaceable units. If a problem occurs with a subassembly or component in the drive, you should replace the entire unit. Return the drive to the factory in its original packaging. Contact your distributor, dealer, your computer system company or your Quantum sales representative to arrange the return.

LTO Cartridge Specifications

Environmental Considerations 5

LTO-4 Half-Height Tape Drive User’s Guide 39

Table 9 lists the basic environmental tolerances for LTO Ultrium

cartridges.

Chapter 5 Specifications

LTO Cartridge Specifications

Table 9 Environmental Tolerances

Cartridge Memory 5

Specification Value

Maximum localized temperature-

Greater than 52°C

permanent tape damage

Operating temperature 10°C to 40°C

Relative humidity 10% to 80% storage,

20% to 80% operating

Wet bulb temperature 26° C max

If during storage and/or transportation a cartridge has been exposed to conditions outside the specified values, it must be conditioned before use in the operating environment. The conditioning shall be exposure to the operating environment for a time equal to, or greater than, the time away from the operating environment, up to a maximum of 24 hours. There shall be no deposit of moisture anywhere on or in the cartridge.

The stray magnetic field at any point on the tape shall not exceed 4000 A/m.

Each Ultrium 1, 2, and 3 cartridge has 4 Kbytes of nonvolatile memory:

• 3 Kbytes are used to store tape-directory and hardware specific information.

• 1 Kbyte is available for application and OEM use.

Each Ultrium 4 cartridge has 8 Kbytes of nonvolatile memory:

• To store tape-directory and hardware specific information.

• For application and OEM use.

The cartridge memory is powered, read, and written to via a radiofrequency link.

Cartridge Reliability 5

LTO-4 Half-Height Tape Drive User’s Guide 40

After 5,000 load/eject cycles, replace the cartridge to insure data integrity.

This chapter provides best-practice installation guidelines for getting the most out of your LTO-4 Half-Height Tape Drive and troubleshooting information you can use to identify and resolve tape drive problems.

Topics covered in this chapter are:

• Installation Best Practices

• Troubleshooting Suggestions on page 42

Installation Best Practices

Chapter 6

6Troubleshooting Guide

Following SCSI Best Practices 6

Using a Serial-attached SCSI Host Bus Adapter 6

LTO-4 Half-Height Tape Drive User’s Guide 41

Always follow SCSI best practices when installing an LTO-4 Half-Height Tape Drive to ensure trouble-free installation and operation.

To achieve the very best performance from your LTO-4 Half-Height Tape Drive and optimize your backup operations, always attach the drive to a serial-attached SCSI controller that supports 3 GBytes per sec. per port transfer rate.

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

HBA Preinstallation Checks 6

Before installing the HBA, check and record your current system configuration. For example:

In the . . . operating system,

Windows 2000 1 Double-clicking

UNIX/Linux Viewing the boot log text file.

Refer to your operating system documentation for specific information on reviewing your system configuration.

After installing the SCSI HBA, restart the system. Then, ensure that the operating system recognizes the HBA and that there are no conflicts with other adapters.

You can find information on any currently installed SCSI HBA by . . .

Administrative Tools in

the Control Panel

2 Clicking

Manager

3 Clicking the SCSI host adapters listed

4 Clicking

tab

Computer Management > Device

Properties to view the Resources

Troubleshooting Suggestions

Computer Does Not Start 6

LTO-4 Half-Height Tape Drive User’s Guide 42

If the computer started and operated properly before installing a SCSI HBA and the LTO-4 Half-Height Tape Drive, but does not start now:

1 Remove the SCSI HBA.

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

2 Restart the system.

IF the system . . . THEN . . .

starts normally, there is a problem with the SCSI HBA.

1 Make sure that the SCSI HBA:

• Is compatible with system

• Does not have burnt components

Reinstall the SCSI HBA in a different PCI slot and restart the computer.

still does not start, contact Technical Support.

Computer Hardware Does Not Recognize the Tape Drive 6

If the computer starts normally but does not recognize the tape drive:

1 Restart the system and check whether the SCSI controller is

recognized at system startup. You should see messages similar to:

SCSI Adapter Manufacturer SCSI BOIS xxxxxxx CHA: SCSI ID #, SCSI Device Name SCSI ID #, SCSI Device Name”

IF the SCSI controller is . . . during system startup, THEN . . .

recognized proceed to step 2 to determine

whether the tape drive is recognized when the SCSI controller scans for devices.

not recognized contact Technical Support.

2 If the SCSI controller is recognized during system startup, restart the

system to determine whether the tape drive is recognized when the SCSI controller scans for devices. You should see messages similar to:

Bus Target Lun Device 0 0 0 Quantum ULTRIUM 4

LTO-4 Half-Height Tape Drive User’s Guide 43

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

IF the tape drive is . . . during system startup, THEN . . .

recognized the problem has been resolved.

not recognized proceed to step 3 to determine whether

the tape drive is receiving power.

3 If the tape drive is not recognized when the SCSI controller scans for

devices, check the green status LED on the LTO-4 Half-Height Tape Drive front panel to make sure the drive is receiving power.

IF the green status LED is . . . THEN . . .

off, proceed to step 4 to check the

power connections to the tape drive.

on, proceed to step 5 to determine

whether the drive passed the Power On Self Test functions.

4 If the green status LED is off, check the power connections to the tape

drive.

For the internal tape drive:

a Shut down the system, remove the cover, and re-seat the DC

power cable connector on tape drive.

b Restart the system and check the green status LED.

LTO-4 Half-Height Tape Drive User’s Guide 44

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

IF the green status LED is . . . THEN . . .

off, shut down the system, replace

the power connector attached to the tape drive with one from a known working device such as a CD-ROM, and restart the system.

If the green status LED:

• Comes on, then resolve the problem with the DC power cable/connector.

• Remains off, then contact Technical Support to resolve the possible problem with the tape drive.

on, repeat step 2 of this procedure

to confirm that re-seating the DC power cable to the tape drive solved the problem and the tape drive is recognized during system startup.

If the tape drive is:

• Recognized during the SCSI controller scan, then the problem is resolved. Reinstall the computer cover.

• Still not recognized, then proceed to step 5 to determine whether the drive passed the Power On Self Test functions.

LTO-4 Half-Height Tape Drive User’s Guide 45

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

For the tabletop tape drive:

a Set the drive AC power switch to the off position and re-seat the

AC power cord connector.

b Set the drive AC power switch to the on position and check the

green status LED.

IF the green status LED is . . . THEN . . .

off, set the drive AC power switch

to the off position, replace the AC power cable with one from a known working device, and reset the AC power switch to the on position.

If the green status LED:

• Comes on, then resolve the problem with the AC power cable/connector.

• Remains off, then contact Technical Support to resolve the possible problem with the tape drive.

on, repeat step 2 of this procedure

to confirm that re-seating or replacing the AC power cable solved the problem and the tape drive is recognized during system startup.

If the tape drive is:

• Recognized during the SCSI controller scan, then the problem is resolved.

• Still not recognized, then proceed to step 5 to determine whether the drive passed the Power On Self Test functions.

LTO-4 Half-Height Tape Drive User’s Guide 46

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

5 If the green status LED is on, but the tape drive is not recognized

during the SCSI controller scan, use the front panel LEDs to determine whether the drive passes the Power on Self Test (POST) functions. (See table 2

on page 16.)

IF the LEDs show that the tape drive . . . the POST functions, THEN . . .

fails contact Technical Support to resolve

the possible problem with the tape drive.

passes proceed to step 6 to check for possible

SCSI problems.

6 If the front panel LEDs indicate that the drive has passed the POST

functions, check the SCSI bus connections.

For the internal tape drive:

a Shut down the system.

b Verify that there are no SCSI ID conflicts between the tape drive

and other SCSI devices.

c Check the SCSI cable for bent pins.

d If possible, replace the SCSI cable with one from another SCSI

controller bus chain.

e If checks a

through d do not reveal a problem, contact Technical

Support to resolve the possible problem with the tape drive.

For the tabletop tape drive:

a Shut down the system and cycle the tape drive AC power switch

through its Off/On positions.

b Verify that there is no SCSI ID conflict between the tape drive

and other SCSI devices.

c Check the SCSI cable for bent pins.

d If possible, replace the SCSI cable with one from another SCSI

controller bus chain.

e If checks a

through d do not reveal a problem, contact Technical

Support to resolve the possible problem with the tape drive.

LTO-4 Half-Height Tape Drive User’s Guide 47

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

Computer Software Does Not Recognized the Tape Drive 6

Depending on your operating system environment, refer to the following subsections for troubleshooting guidelines if the LTO-4 Half-Height Tape drive is recognized by the system hardware at startup, but not by the operating system or applications.

Windows Operating System Environments

When a tape drive is installed in a Windows operating system environment, Windows displays a message on the screen if it does not have a driver in place for the tape drive.

IF the tape drive is for use in . . . THEN you . . .

an ISV application, can click the

Cancel button to

clear the message.

When the ISV backup software application is running, the application invokes its own drivers to run the tape drive.

a native Windows operating system backup utility,

must install the proper driver for the tape drive.

Red Hat Linux Operating System Environments

The tape driver for Red Hat Linux, called st, is included as part of the Red Hat Linux operating system.

When Red Hat Linux starts, the operating system recognizes the tape drive and automatically configures it as a device in the is the first tape device in the

/dev/st0 or /dev/nst0.

LTO-4 Half-Height Tape Drive User’s Guide 48

/dev directory, the tape drive is known as:

/dev directory. If it

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

There are various ways to view the log files to see whether Linux recognizes the tape drive:

• One method is to open a terminal window and issue the following command from the root directory:

dmesg | grep SCSI

This command produces an output similar to:

(scsi0)<Adaptec AHA-294XX Ultra2 SCSI host adapter> found at PCI 0/16/0

• Another method might be to use the command:

cat /proc/scsi/scsi

This command produces an output similar to:

Host: scsi0 Channel: 0 Id:6 Lun:00 Vendor: Quantum Model: ULTRIUM 3 Rev: 1897 Type: Sequential-Access ANSI SCSI revision 04

• You can also use a text editor to view the messages in the file /var/log/ and look for tape drive entries.

• Sometimes a system can have multiple tape device names in the

/dev

directory and will not know which st number to use. To view the st device number for your attached tape drive, use the command:

dmesg | grep tape

This command produces an output similar to:

Detected SCSI tape st0 and scsi0 . . .

LTO-4 Half-Height Tape Drive User’s Guide 49

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

Drive Does Not Load the Tape Cartridge 6

If you cannot load a tape cartridge into the LTO-4 Half-Height Tape Drive:

1 Verify that the tape drive green status LED is on and that all other

LEDs are off.

IF the green status LED is . . .

AND other LEDs are . . . THEN . . .

off, off, refer to the procedures

for troubleshooting power problems under

Computer Hardware Does Not Recognize the Tape Drive on page 43 to

determine why the green status LED is not on.

on, on or flashing, see table

on page 15 to determine whether the other LED activity is normal or abnormal. Then proceed to step 2 of this procedure.

If the amber status LED is flashing and the seven-segment LED displays the number “4” or “5” to indicate a possible Power On Self Test error, contact Technical Support to resolve the possible problem with the tape drive.

on, off, skip to step 3 of this

procedure.

LTO-4 Half-Height Tape Drive User’s Guide 50

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

2 If other LEDs are on, reset the tape drive by either:

• Pressing and holding the cartridge eject button on the front panel for more than 5 seconds and releasing it (both internal and tabletop drives),

• Or by cycling the drive AC power switch off and on (tabletop tape drive only).

3 Verify that the tape drive passes the Power On Self Test by viewing

LED activity. All LEDs should be off for approximately 20 to 30 seconds after the tape drive resets.

4 If the green status LED is on, all the other LEDs are off, and you still

cannot load a tape cartridge into the tape drive, examine the tape and the inside of the tape drive.

• Verify that:

• There are no tape labels interfering with tape insertion.

• Tape labels are only on proper tape surfaces, and that labels

are flat and not curled.

• The tape drive opening is free of debris and tape labels.

• The tape pin and tape are fully within the cartridge.

• If you are inserting a cleaning cartridge, verify that the cleaning tape:

• Is valid. The tape drive ejects unsupported cleaning tapes.

• Has not expired. See table 2

on page 16 for Expired cleaning

cartridge detected.

5 Attempt to insert a different tape cartridge.

6 If a tape still cannot be inserted into the tape drive, contact Technical

Support to resolve the possible problem with the tape drive.

LTO-4 Half-Height Tape Drive User’s Guide 51

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

Drive Does Not Eject the Tape Cartridge 6

If you cannot eject a tape cartridge from the LTO-4 Half-Height Tape Drive:

1 Verify that the green status

IF the green status LED is . . .

LED is on and that all other LEDs are off.

AND other LEDs are . . . THEN . . .

off, off, refer to the procedures

for troubleshooting power problems under

Computer Hardware Does Not Recognize the Tape Drive on page 43 to

determine why the green status LED is not on.

on, on or flashing, see table 2

on page 16 to determine whether the other LED activity is normal or abnormal. Then proceed to step 2 of this procedure.

on, off, skip to step 3 of this

procedure.

LTO-4 Half-Height Tape Drive User’s Guide 52

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

2 If other LEDs are on, reset the tape drive by either:

• Pressing and holding the cartridge eject button on the front panel for more than 5 seconds and releasing it (both internal and tabletop drives)

• Cycling the drive AC power switch off and on (tabletop tape drive only)

3 With the green status LED on and all other LEDs off, press the

cartridge eject button on the front panel.

IF . . . THEN . . .

the green status LED flashes, with no other LED indicators on,

you see a message similar to:

You cannot eject the cartridge because the tape drive is in use. Wait until the operation is complete before ejecting the cartridge. The backup software may still have the tape drive in prevent mode so that the cartridge cannot be ejected. Use the backup software commands to eject the tape.

wait for the tape to eject (normally takes from 2 to 3 minutes).

• If the tape ejects, and the green status LED stops flashing, the problem has been resolved.

• If the tape does not eject, and there are no other LED indications, contact Technical Support to resolve the possible problem with the tape drive.

use the mt offline command to eject the tape.

Note: In UNIX/Linux

environments, the message may not appear, even though the operating system prevents the drive from ejecting the tape. Use the

mt offline command

anyway.

LTO-4 Half-Height Tape Drive User’s Guide 53

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

IF . . . THEN . . .

Slow Backup Operations 6

the amber status indicate a hardware error,

LED flashes to

the cartridge might be physically jammed inside the drive. Contact Technical Support to resolve the possible problem with the tape drive.

Many factors can make backups appear to be slow. To achieve the highest possible transfer rate, the LTO-4 Half-Height Tape Drive:

• MUST be attached to a SCSI controller capable of a minimum of 80 Mbytes per sec., and

• MUST NOT share the same SCSI bus as another active SCSI device such as hard drives.

1 Verify that the tape drive is attached to a SCSI controller. You can do

this by:

• Watching the system the startup process

• Examining the system startup log files

IF the tape drive is . . . to a SCSI controller, THEN . . .

attached proceed to step 2 of this

procedure to determine whether the tape drive shares the SCSI bus with another active SCSI device.

not attached attach the tape drive to a SCSI

controller to achieve the best possible hardware performance for the best possible transfer rate.

LTO-4 Half-Height Tape Drive User’s Guide 54

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

2 If the tape drive is attached to a SCSI controller, verify that it does not

share the SCSI bus with another active SCSI device by:

•Checking:

• Windows Device Manager

• Unix/Linux logs

• Monitoring the SCSI controller activity during system startup.

IF the tape drive . . . THEN . . .

shares the SCSI bus with other SCSI devices that are active when tape backups are

reconfigure the SCSI setup to make the tape drive the only active device on the SCSI bus.

performed,

is the only active device on the SCSI bus

proceed to step 3 of this procedure to determine whether the method of performing tape backups is a factor.

3 The method of performing tape backups can be a factor in slow

backup operations. Data sent to the tape drive over a network connection and delays in data transfer over a network connection can cause backups to slow down.

To determine whether the method of performing tape backups is a factor:

a Use the tape diagnostic software to perform a write/read test.

Caution: The read/write test will overwrite any data on the

tape. Always use a new/blank or “scratch” cartridge for diagnostic read/write tests.

The diagnostic write/read test evaluates the connection between the tape drive and the SCSI controller and removes the network data transfer and the backup software from the performance evaluation.

LTO-4 Half-Height Tape Drive User’s Guide 55

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

b When the test finishes, determine the megabytes per second data

transfer rate to verify that the tape drive is performing at an acceptable rate.

IF you believe that the read/ write transfer rate is . . . THEN . . .

too slow, use the tape diagnostic

software to perform a trace buffer retrieval.

Send the diagnostic output file to Technical Support for evaluation of the SCSI bus condition.

Failed Operations TapeAlert Messages 6

acceptable, but backups still seem to be slow,

it might be attributed to the number of files and the average size of the backup files.

These factors can have a significant effect on the backup performance.

Backups where the average file size is less than 200 Kbytes, for example, are slower than backups where the average file size is greater than 200 Kbytes.

Obtain backup log files to determine number of files and average file size.

The LTO-4 Half-Height Tape Drive supports the TapeAlert standard, and issues the appropriate alert messages in response to operational error conditions. You can view TapeAlert messages either directly, on the system screen, or in the log file of your backup application. Note, however, that some operational error conditions can cause more than one TapeAlert message.

LTO-4 Half-Height Tape Drive User’s Guide 56

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

The following subsections provide troubleshooting guidelines for dealing with the most common TapeAlert error conditions.

Backup Failure TapeAlert Messages

A number of problems can cause a backup operation to fail.

This TapeAlert message . . . Signifies . . .

The operation has stopped because an error has occurred while reading or writing data which the drive cannot correct.

that a media error occurred during a read or write operation.

Proceed to step 1 of the following procedure.

The tape is from a faulty batch or the tape drive is faulty.

or:

The tape is damaged or the drive is faulty. Call the tape drive supplier helpline.

that a media error occurred during a read or write operation.

These messages frequently appear in addition to the “

operation has stopped because...

message. In this case, proceed to step 1 of the following procedure.

Otherwise, repeat the backup operation with a known good tape and proceed to step 1 of the following procedure if the problem persists.

The

”

1 Retry the backup operation if you make any changes are made to the

SCSI cabling, or if you unplug and reconnect any SCSI cables

2 If the problem persists, remove the data tape, insert a cleaning

cartridge to clean the tape drive (see Cleaning the Tape Drive

page 20).

3 After the tape drive ejects the cleaning cartridge, reload the data tape

and retry the backup operation.

LTO-4 Half-Height Tape Drive User’s Guide 57

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

4 If the problem persists, use the tape diagnostic software to perform a

write/read test with 4 Gbytes of data.

Caution: The write/read test will overwrite any data on the

tape. Always use a new/blank or “scratch” cartridge for diagnostic write/read tests.

IF the diagnostic test . . . THEN . . .

completes normally, retry the backup operation

using the same new/blank or “scratch” tape that you used for the diagnostic write/read test.

If the backup retry:

• Succeeds, discard the original data tape. The problem is resolved.

• Fails, repeat steps 3 and 4 of this procedure to clean the tape drive a second time and proceed to step 6.

fails, repeat steps 3 and 4 of this

procedure to clean the tape drive a second time and proceed to step 6.

5 Retry the backup operation. If the backup retry:

• Succeeds, the problem is resolved.

• Fails, contact Technical Support to resolve the possible problem with the tape drive.

LTO-4 Half-Height Tape Drive User’s Guide 58

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

Write-Protected TapeAlert Messages 6

Write-protected TapeAlert messages can appear in response to:

• Actual write-protected tape cartridges

• Defective tape cartridges

• Cartridges of a type that appear to be write protected

This TapeAlert message . . . Signifies . . .

You are trying to write to a writeprotected cartridge. Remove the write-protection or use another tape.

The memory in the tape cartridge has failed, which reduces performance. Do not use the cartridge for further backup operations.

and/or:

You have loaded a cartridge of a type that is read-only in this drive. The cartridge will appear as writeprotected.

that you are trying to write to a tape cartridge that is actually write protected.

1 Eject the tape cartridge

from the drive.

2 Set the cartridge write-

protect switch to the unlocked (read-enabled) position (see figure 7

page 19).

3 Retry the backup operation.

you are trying to write to a tape cartridge that is either defective (failed Cartridge Memory chip), or the wrong type.

Retry the backup operation using a known good cartridge of the proper type.

If the problem persists, contact Technical Support to resolve the possible problem with the tape drive.

Overwrite protection is set to <setting>. Click OK to overwrite the media or insert new media that can be overwritten.

a software-related problem.

Refer to the documentation for your backup software for information on the overwrite and append settings.

LTO-4 Half-Height Tape Drive User’s Guide 59

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

Hardware Failure TapeAlert Messages 6

Hardware failure TapeAlert messages are descriptive and straightforward.

This TapeAlert message . . . Signifies . . .

The tape drive has a hardware fault:

1. Eject the tape or magazine.

2. Reset the drive.

3. Restart the operation.

a tape drive hardware failure.

Or:

The tape drive has a hardware fault:

1. Turn the tape drive off and then on again.

2. Restart the operation.

3. If the problem persists, call the tape drive supplier helpline.

1 Press the cartridge eject button on the front panel to eject the tape

cartridge.

2 Cycle the tape drive power to the off then on position:

For the internal LTO-4 Half-Height Tape Drive:

a Terminate all running applications.

b Shut down the workstation or server system.

c Restart the system.

For the tabletop LTO-4 Half-Height Tape Drive, use the AC power on/off switch on the back panel to cycle the drive power to the off then on position.

LTO-4 Half-Height Tape Drive User’s Guide 60

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

3 Check the tape drive front panel LED indicators to determine the

operational condition of the drive (see table 2

on page 16).

This LED indication . . . Signifies . . .

• Green status LED on steady

and:

the normal operational configuration. The problem is resolved.

• All others off

• Amber status LED flashing a hardware failure condition.

Contact Technical Support to resolve the possible problem with the tape drive.

•Amber status

LED flashing

and:

• Seven-segment LED displaying a number

a failed Power On Self Test function.

Contact Technical Support to resolve the possible problem with the tape drive.

Tape Cleaning TapeAlert Messages

Tape cleaning TapeAlert messages indicate problems when you insert a cleaning cartridge into the LTO-4 Half-Height Tape Drive. Like hardware failure TapeAlert messages, tape cleaning TapeAlert messages are descriptive and straightforward.

This TapeAlert message . . . Signifies . . .

The last cleaning cartridge used in the tape drive has worn out:

1. Discard the worn out cleaning cartridge.

2. Wait for the current operation to finish.

3. Then use a new cleaning cartridge.

LTO-4 Half-Height Tape Drive User’s Guide 61

that the cleaning cartridge is used up. Discard it.

See Cleaning the Tape Drive

on page 20 and use a new or still functional LTO cleaning cartridge to clean the tape drive.

Chapter 6 Troubleshooting Guide

Troubleshooting Suggestions

This TapeAlert message . . . Signifies . . .

The last cleaning cartridge used in the tape drive was an invalid type:

1. Do not use this cleaning cartridge in this drive.

2. Wait for the current operation to finish.

3. Then use a valid cleaning cartridge.

The tape drive needs cleaning:

1. If the operation has stopped, eject the tape and clean the drive.

2. If the operation has not stopped, wait for it to finish and then clean the drive.

3. Check the tape drive users manual for device specific cleaning instructions.

the tape drive does not recognize the cleaning tape as being of a valid type.

See Cleaning the Tape Drive

on page 20 and use a valid LTO-type cleaning cartridge to clean the tape drive.

the tape drive has issued a message to the backup software to instruct you to clean the tape drive.

See Cleaning the Tape Drive

on page 20.

LTO-4 Half-Height Tape Drive User’s Guide 62

Appendix A

AInstallation Checklists

Use the following quick-start checklists to get your tape drive up and running as quickly as possible:

• Internal LTO-4 Half-Height Tape Drive Quick Start

• Tabletop LTO-4 Half-Height Tape Drive Quick Start

LTO-4 Half-Height Tape Drive User’s Guide 63

Appendix A Installation Checklists

Internal LTO-4 Half-Height Tape Drive Quick Start

Use the following quick-start procedure to install the internal LTO-4 Half-Height Tape Drive. Print this page and check each step as you complete it. If you need more information about a step, see the sebsection referenced in the step.



1 Unpack the contents of your drive package, and check for damaged items.

See Unpacking and Inspecting the

2 Turn off your computer, remove its covers and power cable, and select a mounting

bay for the drive.

See M

ounting the Internal Tape Drive on page 9.

3 Connect a serial-attached SCSI (SAS) interface cable to the drive.

See C

onnecting the Internal Drive Interface and DC Power Cables on page 10.

4 Connect a serial cable, if installing the tape drive in a tape library system.

See C

onnecting the Internal Drive Interface and DC Power Cables on page 10.

5 Connect a DC power cable to the drive.

See C

onnecting the Internal Drive Interface and DC Power Cables on page 10.

6 Replace the computer covers and AC power cable, turn on the computer, and

verify that the internal tape drive is operating properly.

7 Register your tape drive.

See Registering the LTO-4 Half-Height Tape Drive

Drive on page 7.

on page 14.

LTO-4 Half-Height Tape Drive User’s Guide 64

Appendix A Installation Checklists

Tabletop LTO-4 Half-Height Tape Drive Quick Start

Use the following quick-start procedure to install tabletop LTO-4 HalfHeight Tape Drive. Print this page and check each step as you complete it. If you need more information about a step, see the subsection referenced in the step.



1 Unpack the contents of your drive package, and check for damaged items.

See Unpacking and Inspecting the

2 Connect a serial-attached SCSI (SAS) interface cable to the drive.

See C

onnecting the Internal Drive Interface and DC Power Cables on page 10.

3 Connect a power cable to the drive.

See C

onnecting the Tabletop Drive Interface and AC Power Cables on page 12.

4 • Turn on the computer

• Turn on the tabletop tape drive

• Verify that the tabletop tape drive is operating properly.

5 Register your tape drive.

Registering the LTO-4 Half-Height Tape Drive

Drive on page 7.

on page 14.

LTO-4 Half-Height Tape Drive User’s Guide 65

Appendix B

BDisposal of Electrical & Electronic

Equipment

This symbol on the LTO-4 Half-Height Tape Drive or on its packaging indicates that the tape drive should not be disposed of with your other waste materials. Instead, it should be submitted to a designated collection point for the recycling of electrical and electronic equipment. The separate collection and recycling of your waste equipment at the time of disposal helps conserve natural resources and ensures that the equipment is

recycled in a manner that protects human health and the environment.

For more information about properly disposing of your waste equipment for recycling, please visit our website at qcare.quantum.com your local government authority, your household waste disposal service, or the business from which you purchased the product.

LTO-4 Half-Height Tape Drive User’s Guide 66

or contact

Appendix C

CRegulatory Compliances

This appendix identifies the he LTO-4 Half-Height Tape Drive regulatory compliances. The topics include:

• Safety Compliances

• Electromagnetic Compatibility (EMC) Compliances on page 69

LTO-4 Half-Height Tape Drive User’s Guide 67

Safety Compliances

The LTO-4 Half-Height Tape Drives are safety compliant with the following regulatory codes in the countries indicated:

Country Regulatory Organization Compliant to:

Appendix C Regulatory Compliances

Safety Compliances

Canada Canadian Standards Association

(CSA)

EU member nations Comité Europèen de Normalisation

Electrotechnique – the European Committee for Electrotechnical Standardization (CENELEC)

IECEE member nations*

Israel SII CB Scheme

Taiwan BSMI BSMI certification,

United States Underwriters Laboratories (UL) UL/CSA 60950-1

* IECEE member nations include: Argentina, Austria, Australia, Belgium, Brazil, Canada, China (PR), Czech Republic, Denmark, Finland, France, Germany, Hungary, India, Ireland, Israel, Italy, Japan, (South) Korea, Montenegro, Netherlands, Norway, Poland, Russian Federation, Serbia, Singapore, Slovakia, Slovenia, South Africa, Spain, Switzerland, Turkey, United Kingdom, and USA.

International Electrotechnical Commission on Electrical Equipment (IECEE) for Mutual Recognition of Test Certificates for Electrical Equipment “CB Scheme”

UL/CSA 60950-1

EN 60950-1, 1st edition

CB Scheme per IEC 60950-1 with details and exceptions for each member country

CNS 14336

LTO-4 Half-Height Tape Drive User’s Guide 68

Appendix C Regulatory Compliances

Electromagnetic Compatibility (EMC) Compliances

The LTO-4 Half-Height Tape Drives are EMC compliant with the following regulatory organizations and codes in the countries indicated:

Country Regulatory Organization Compliant to:

Australia Australian Communications and

Media Authority (ACMA)

Canada Industry Canada Digital Apparatus

- Interference-Causing Equipment Standard (ICES-003)

EU member nations CE Emissions per CISPR

Israel SII CISPR 22 and CISPR 24

Japan Voluntary Control Council for

Interface (VCCI)

New Zealand Australian Communications and

Media Authority (ACMA)

South Korea MIC CISPR 22 and CISPR 24

Taiwan Bureau of Commodity Inspection

and Quarantine (BSMI)

AS/NZS 3548 (same as CISPR 22)

ICES-003 Digital Apparatus

22, EN55022 and Immunity per CISPR 24, EN55024

VCCI

AS/NZS 3548 (same as CISPR 22)

BSMI EMC certification, CNS 14338

United States Federal Communications

Commission (FCC)

LTO-4 Half-Height Tape Drive User’s Guide 69

Title 47: Code of Federal Regulations, Part 15, Subpart B (47CFR15B),

Appendix C Regulatory Compliances

Electromagnetic Compatibility (EMC) Compliances

Note: Use the LTO-4 Half-Height Tape Drive only in equipment

where the combination has been determined to be suitable by an appropriate certification organization (for example, Underwriters Laboratories Inc. or the Canadian Standards Association in North America).

Also consider the following safety points:

• Install the drive in an enclosure that limits the user’s access to live parts, gives adequate system stability and provides the necessary grounding for the drive.

• Provide the correct voltages (+5 VDC and +12 VDC) based on the regulation applied—Extra Low Voltage (SEC) for UL and CSA, and Safety Extra Low Voltage for BSI and VDE (if applicable).

LTO-4 Half-Height Tape Drive User’s Guide 70

Index

backup/restore problems 56 best practices 41

cartridge memory, description 3

cartridges

care and maintenance

ejecting

loading 18

specifications

troubleshooting unloading 18

write-protecting

cautions, internal drives chassis, description 3

data buffer 25

data buffering, description

data compression

considerations description 3

intelligent

data integrity

error-correction code 26

servo-tracking faults

data transfer rate

description

variable-speed

drive performance specifications

ejecting a cartridge 18

environmental requirements

error-correction code

features 3

front panel display 15

guidelines, handling and

installation 6

handling precautions 6

head positioner, description

injected noise 38 inspecting the drive 7

installation guidelines

installation instructions

internal drives

preinstallation requirements

tabletop drives

installing the LTO driver 14

LTO-4 Half-Height Tape Drive User’s Guide 71

intelligent data compression

description

interface, description 3

internal drives

guidelines and cautions installation instructions 8

mounting

quick-start checklist registering 14

layout of track 23

loading a cartridge LSI circuitry, description 3

mean time between failures 39

method of recording mounting, internal drives 9

native data transfer rate, description

overview 1

physical specifications 32

platforms, supported

power specifications preinstallation requirements 7

quick-start checklist

internal drives tabletop drives 65

read channel, description 3

recording method registering tape drive 14

regulatory compliance

reliability RISC processor, description 3

servo-tracking faults 27

slow backups SmartVeirfy, description 3

specifications

drive performance environmental requirements 37

injected noise

LTO cartridge mean time between failures 39

physical

power regulatory compliance 67

reliability

supported platforms 3

tabletop drives

installation instructions quick-start checklist 65

tape drive

registering troubleshooting 50

tape picking, description

TapeAlert

description

messages

track layout troubleshooting 42

backup/restore problems

computer boots but does not

recognize tape drive 43

slow backups

tape drive not recognized by

operating system or application 48

tape drives and cartridges tape will not eject from drive 52

TapeAlert messages

unloading a cartridge 18 unpacking the drive 7

variable-speed data transfer,

description 4

LTO-4 Half-Height Tape Drive User’s Guide 72

write-protecting a cartridge 18

LTO-4 Half-Height Tape Drive User’s Guide 73

Quantum LTO-4 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Figures

Tables

Preface

Overview

1Introduction

Drive Models

Internal 1

Tabletop 1

Features

2Installation Procedures

Before Installing the LTO-4 Half-Height Tape Drive

Handling Precautions and Installation Guidelines 2

Preinstallation Requirements 2

Unpacking and Inspecting the Drive 2

Installing the Internal LTO-4 Half-Height Tape Drive

Mounting the Internal Tape Drive 2

Connecting the Internal Drive Interface and DC Power Cables 2

Restarting the Internal Tape Drive System 2

Installing the Tabletop LTO-4 Half-Height Tape Drive

Connecting the Tabletop Drive Interface and AC Power Cables 2

Restarting the Tabletop Drive System 2

Installing the LTO Driver Software

Registering the LTO-4 Half-Height Tape Drive

3Operation

Understanding the Front Panel Display

Using LTO Tape Cartridges

Loading a Tape Cartridge 3

Unloading a Tape Cartridge 3

Write Protecting a Tape Cartridge 3

Tape Cartridge Care and Maintenance 3

Cleaning the Tape Drive

Performing an Emergency Cartridge Eject

4Theory

Track Layout

Recording Method

Data Buffer

Data Integrity

Error-correction Code (ECC) 4

Data Compression

Servo-tracking Faults 4

Data Compression Considerations 4

Intelligent Data Compression 4

5Specifications

Physical Specifications

Power Specifications

Drive Performance Specifications

Environmental Requirements

Injected Noise Specifications

Reliability Specifications

LTO Cartridge Specifications

Mean Time Between Failures 5

Mean Time to Replace 5

Environmental Considerations 5

Cartridge Memory 5

Cartridge Reliability 5

Installation Best Practices

6Troubleshooting Guide

Following SCSI Best Practices 6

Using a Serial-attached SCSI Host Bus Adapter 6

Troubleshooting Suggestions

HBA Preinstallation Checks 6

Computer Does Not Start 6

Computer Hardware Does Not Recognize the Tape Drive 6

Computer Software Does Not Recognized the Tape Drive 6

Drive Does Not Load the Tape Cartridge 6

Drive Does Not Eject the Tape Cartridge 6

Slow Backup Operations 6

Failed Operations TapeAlert Messages 6

AInstallation Checklists

Internal LTO-4 Half-Height Tape Drive Quick Start

Tabletop LTO-4 Half-Height Tape Drive Quick Start

CRegulatory Compliances

Safety Compliances

Electromagnetic Compatibility (EMC) Compliances

Index