TapeLabs P/N 5-01-1056-A Tandem P/N 420012-001 Tandem Models 5142-1SE and 5142-2SE Rackmount 4mm DDS-3 Tape Drive Subsystems User Guide 5142-1SE Tape Drive Subsystem 5142-2SE Tape Drive Subsystem Tape Laboratories, Inc. 3753 Howard Hughes Parkway, Suite 200 Las Vegas, NV 89109 1-800-442-0303 © 1998 Tape Laboratories, Inc.
Tape Laboratories, Inc. 3753 Howard Hughes Parkway, Suite 200 Las Vegas, NV 89109 Phone: 1-800-442-0303 © 1998 Tape Laboratories, Inc. All rights reserved No part of this document may be copied in any form or by any means without prior written consent of Tape Laboratories, Inc. EPROMs used in the products described herein contain firmware that is copyrighted by and shall remain the property of Tape Laboratories, Inc.
i List of Acronyms ANSI BOT CPU ECC FRU LAN LCD LED MFC POST SCSI American National Standard Institute Beginning of Tape Central Processing Unit Error Correction Code Field Replacement Unit Local Area Network Liquid Crystal Display Light Emitting Diode Multifunction Controller Power-On Self Test Small Computer Systems Interface Tandem 5142-xSE Rackmount Tape Subsystems User Guide iii
ii Terminology Used in This Manual Emulator The fast SCSI bridge between the host and the tape drive that provides intelligence to execute commands to the tape drive and manipulate data for display on the LCD. Host Computer or platform that contains the tape controller (also known as SCSI initiator). Initiator A SCSI device that initiates the SCSI protocol to control one or many target devices.
iii Safety Summary Observe the following safety precautions during installation, operation and maintenance. Warning!!! Keep away from live circuits. Do not connect or disconnect the tape drive subsystem or make adjustments inside the equipment when the unit's power cord is on. Always disconnect the power cord before removing the cover or touching any internal components. FCC Regulations This equipment generates, uses and can radiate radio frequency energy.
iv Assumptions About Reader Knowledge This manual assumes that the reader is familiar with: • • The operational principles of tape drive subsystems The Small Computer Systems Interface (SCSI) The manual accommodates the intermediate user while considering the needs of the experienced user.
v Table of Contents Chapter One – Introduction...............................................................................................................................................1 Product Description..................................................................................................................................................1 Product Parts List......................................................................................................................................
Chapter Six – Maintenance..................................................................................................................................................32 5142-xSE Subsystem Tape Path Cleaning....................................................................................................32 Cleaning the LCD......................................................................................................................................................33 Operating Environment........
vi 5142-xSE Subsystem Tape Path Cleaning The Media Caution LED is located on the front panel of the tape drive. When it flashes amber, the tape heads are already dirty. Tape Media Caution 1 2 1 2 Detail A Figure 1 5142-xSE Media Caution LED Warning!!! The tape heads must be cleaned regularly. Different tape cartridges (60m, 90m, 120 and 125m) required different cleaning intervals. Use the recommended cleaning schedule as specified per cartridge type. See the Tables 1 and 2.
Using the Cleaning Cartridge Note: To prevent contamination of the subsystem and damage to the heads (1) do not use the cleaning cartridge for more than the manufacturer's specified number of cleaning cycles; and (2) do not attempt to rewind the material in the cleaning cartridge and reuse it. Insert the cleaning cartridge into the drive. The drive automatically takes the cartridge, loads it and cleans the heads. After about 30 seconds, the drive ejects the cartridge.
Chapter One – Introduction 1.1 Product Description The 5142-xSE was designed and built specifically for Tandem Computers by TapeLabs for use in a telco central office environment. It's applications include file backup, archiving and software loading. The 5142-1SE contains one DAT drive. The 5142-2SE contains two independent DAT drives.
Chapter One – Introduction 1.2 Product Parts List The following items are supplied with each 5142-xSE rackmount subsystem: Description Tandem Model ASM: TD, DAT, DDS, DUAL, K-CO The following items are included: • DAT drive (1) • 19" rack mount unit (1) • Terminator, Centronics differential 50 pin (2) • 125m DDS-3 tape cartridge (2) • Cleaning Cartridge (1) • User manual (1) • Order form (1) • Mounting screws, TPN 139218 (10-32X.
Chapter One – Introduction • • 1.3.4 SCSI bus data transfer rates (burst): • 1.3.5 Intelligent front end, backlit, supertwist LCD Advanced drive test and exercise function Firmware upgrade function Drive Rated Performance: • • • • • 1.4 SCSI-2, differential LCD and control panel: • • • 1.3.7 3MB/s asynchronous Interface: • 1.3.6 1.0MB/s uncompressed 2.
Chapter One – Introduction • The DDS-3 format uses the same error correction techniques as the DDS-1 format. These incorporate the error correction techniques used in DAT drives with additional techniques specifically designed to provide the integrity of data necessary for computer use.
Chapter One – Introduction 1.6 SCSI Cabling Limitations Maximum total allowable cable length for a differential SCSI interface is 82 feet (25 meters). This distance must be measured from the controller to the last device on the bus. Remember to add 12 inches for the internal cable of each subsystem. Cables provided are 110 ohm twisted pair. If you are using a cable of unknown composition, we suggest you replace it with the one provided by Tandem Computers.
Chapter Two – Installation 2.1 Unpacking the Subsystem Carefully unpack and inspect the subsystem. Inspect the parts for possible damage. If damage is observed, immediately notify the carrier and your vendor. Save the carton and packing materials in case your need to ship your subsystem. 2.
Chapter Two – Installation 2.3 2.2.5 Connect the -48 volt DC power cord to the power connector(s) of the subsystem. There are independent DC power ports for each drive. 2.2.6 Your hardware is now installed. Refer to your backup software's documentation for instructions on performing a tape backup. Note: Make sure that you have terminated the subsystem and have set the subsystem's SCSI ID. (See Sections 2.3 and 2.
Chapter Two – Installation 2.5 Setting the Subsystem SCSI ID: The 5142-xSE is a SCSI device. Each device connects to your system through the SCSI bus and MUST have a unique SCSI ID in order for your computer to recognize it. There are not any requirements about the order or position of the SCSI IDs; the only requirement is that no duplicate IDs exist. Devices on the SCSI bus malfunction if two or more devices have identical SCSI IDs.
Chapter Two – Installation 2.5.3 Select the SCSI ID screen by pushing the mode switch when the SCSI ID screen displays. This configuration menu item allows you to set the SCSI ID. When the screen reads PRESS to Alter, push the mode switch. The LCD shows the instruction PRESS to Incremnt. On the second line of the display, a highlight indicates what digit is alterable. To increment the digit, push the mode switch. The subsystem SCSI ID must be 5 for connection to the MFC.
Chapter Three - Controls and Indicators 3.1 Controls and Indicators This chapter discusses the 5142-xSE tape subsystem controls and indicators by function, location and type. Figure 6 provides views of the 5142-1SE tape drive subsystem's front panel, and lists the controls and indicators. Figure 7 identifies all the connectors and switches on the 5154-2SE rear panel.
Chapter Three - Controls and Indicators DRIVE A DRIVE B Tape Drive Eject Display LEDs Button Unit Display LEDs Mode LCD Switch 5142-2SE Front Panel DRIVE B DRIVE A SCSI Connectors Fan DC Fan Power Input Connectors SCSI Connectors 5142-2SE Rear Panel Figure 7 3.2 5142-2SE front and rear panels Understanding the Tape Drive LEDs The 5142-xSE tape subsystem has two LEDs that communicate drive status (See Figure 8). By looking at the LEDs, you can determine the operating states.
Chapter Three - Controls and Indicators 3.2.1 3.2.2 3.2.3 The Tape LED (number 1 in Figure 8) uses green to show tape activity as follows: • Slow flashing green means a tape is being loaded or unloaded. • Steady green means a tape is loaded. • Fast flashing green means read or write operations are occurring.
Chapter Four - Tape Cartridges 4.1 Tape Cartridge A cartridge is a storage device that contains either magnetic tape or a cleaning ribbon inside a protective case. The cartridge protects the tape or ribbon and makes handling easier. There are two type of cartridges: (1) cleaning cartridges and (2) cartridge tapes. 1. Cleaning tapes are used to clean the tape drive recording heads with a cleaning ribbon. 2. Cartridge tapes hold magnetic storage media for the tape subsystem.
Chapter Four - Tape Cartridges 4.2 Selecting a Tape Cartridge The 5142-xSE uses data-quality removable, rewriteable 4mm DAT cartridges. The following table shows tape cartridge capacity. Cartridge Type Drive Type 60m cartridge 90m cartridge 120m cartridge 125m cartridge DDS-1 DDS-1 DDS-2 DDS-3 Native Capacity 1.3GB 2.0GB 4.0GB 12.0GB Compressed Capacity* 2.6GB 4.0GB 8.0GB 24.0GB *assumes 2:1 data compression Table 7 4.
Chapter Four - Tape Cartridges 4.5 Loading a Tape Cartridge Warning!!! 4.5.1 Ensure the subsystem's power is on and the tape drive is ready before loading a cartridge. Be careful not to insert a cartridge backwards or upside down. Power on the subsystem. Input power for the 5142-xSE is controlled by the S-series computer. Note: 4.5.2 Use only cartridges labeled DDS. Never use DAT cartridges because the mechanism of the cartridge is not certified.
Chapter Four - Tape Cartridges 4.6 Unloading a Tape Cartridge The cartridge ejects from the tape drive either when you press the Eject Button, or in response to a SCSI LOAD/UNLOAD command with the LOAD bit set to 0. Note: If the drive is engaged in a task when you press the Eject button, it may be a long time before it responds to the request, because it must first finish the task. This ensures that the task is terminated in a controlled manner and no data is lost.
Chapter Five - SCSI Bridge Electronics 5.1 Introduction to the Subsystem Display At the heart of the display system is the Infourmm fast SCSI bridge, which provides performance information about the tape operation. In addition to bridging communications between the host and tape drive, Infourmm autonomously sends commands to the tape drive to extract the data necessary for the display.
Chapter Five - SCSI Bridge Electronics 5.5 Understanding the Capacity Bar Graph The capacity bar graph dynamically tracks remaining and consumed capacities. It updates dynamically during read and write operations.
Chapter Five - SCSI Bridge Electronics 5.7 Performance LCD Format Upon receiving a TEST UNIT READY or INQUIRY SCSI command from the host, the LCD switches to the Performance Format. This is the main operational format of the LCD. The top two lines of the LCD always display the current SCSI command and the tape-capacity bar graph. The bottom two lines of the display alternate between five performance/status items.
Chapter Five - SCSI Bridge Electronics 5.7.2 Total Data Transferred Total data bytes read or written to/from the subsystem show with a KB (1024), MB (1024 x 1024) or GB (1024 x 1024 x 1024) multiplier. On the first read or write command following a rewind, the count is set to zero. Write E F TOTL XFR 74MB Figure 19 5.7.
Chapter Five - SCSI Bridge Electronics 5.7.5 Remaining Capacity This value is an estimate of remaining tape capacity. It is computed by multiplying the average compression ratio by the remaining block count. KB, MB and GB represent multipliers of 1024, 1024 x 1024, and 1024 x 1024 x 1024, respectively. Read E F REMAIN'G 1.7GB Figure 22 5.7.
Chapter Five - SCSI Bridge Electronics When the desired tape density appears, push the mode switch to select it. The selected setting is used until the unit is repowered or reset. The choices offered are as follows: C0 = Compressed format 40 = Non-compressed format FF = Density controlled by the host software Note: 5.9 The setting from the last change of tape density is used as the default start-up value.
Chapter Five - SCSI Bridge Electronics 5.10.2 Changing a Setting Depending on the menu item, alter settings by the appropriate method explained below. When the instruction reads PRESS to Alter you have the option of exiting from the editing mode ore remaining in the editing mode to review the settings. Numeric-Entry Method With this method you change settings by entering a decimal or hexadecimal number, digit-bydigit.
Chapter Five - SCSI Bridge Electronics 5.11 Setup 1 Configuration Display Format Items Enter Set-Up 1 PRESS to Select SCSI ID: [00] PRESS to Alter Tape ID: [00] *NOT sel ectable* Tape Term: On *NOT sel ectable* Density: [C0] PRESS to Alter Rwr% 0.5 Ecc: 0.5 PRESS to Alter Figure 29 5.11.
Chapter Five - SCSI Bridge Electronics 5.11.3 Setting the Tape Termination This configuration item has been factory-configured and is, therefore, not selectable. Tape Term:On *NOT sel ectable* Figure 32 5.11.4 Tape termination Selecting the Tape Density Tape density format may be controlled by the display unit or by the host system. When the appropriate drivers exist, the latter method is generally preferred and a setting of FF should be used.
Chapter Five - SCSI Bridge Electronics 5.11.5 Setting the Error-Alert (ECC/Rewrite Percentages) Thresholds The electronics allow you to set a numeric percentage for error-alert thresholds that, when exceeded, cause the amber LED (the lower LED on the subsystem's front panel) to blink. Enter error-alert thresholds by the Numeric Entry method. First, set the rewrite threshold followed by the ECC threshold. Entries take the form XX.X, so that you may enter values in the range of 00.0 percent to 99.9 percent.
Chapter Five - SCSI Bridge Electronics 5.12.1 Editing the option access key This configuration item has been factory-configured and is, therefore, not selectable. Key:7.0E [288FEA] *NOT sel ectable* Figure 36 5.12.
Chapter Five - SCSI Bridge Electronics 5.13 Setup 3 Off-line Utilities Display Format Items Enter Set-Up 3 PRESS to Select Drive Test PRESS to Run Hdwr Test PRESS to Run Create a CodeTape PRESS to Run Load a CodeTape PRESS to Run Exit Set-Up 3 PRESS to Select Figure 39 Setup 3 configuration items Pressing the mode switch at this menu item invokes the drive self-test and offers a series of options from which you may select.
Chapter Five - SCSI Bridge Electronics Enter Set-Up 3 PRESS to Select Drive Test PRESS to Run 200M Fixd.Tst PRESS to Run 200M Fixd.Tst PRESS to Confirm 200M Fixd.Tst Waiting for Tape Write E F TOTL XFR 24MB Write E F XFR RATE 424KB/s Write E F COMPRESS 2.3:1 Write E F RWr Rate 0.0% Write E F REMAIN'G 1.9GB Pass E F REMAIN'G 1.9GB 200M Fixd.
Chapter Five - SCSI Bridge Electronics Enter Set-Up 3 PRESS to Select Drive Test PRESS to Run Custom Test PRESS to Select 1MB to Xfer PRESS to Increment Variable Mode PRESS to Toggle Run Once PRESS to Toggle Ready to Run PRESS to Start Ready to Run PRESS to Escape Ready to Run PRESS to Confirm Ready to Run Waiting for tape Write E F TOTL XFR 1024MB Write E F XFR RATE 301KB/s Write E F COMPRESS 1.0:1 Write E F RWr RATE 0.0% Write E F REMAIN'G 1.
Chapter Five - SCSI Bridge Electronics 5.13.2 Activating a hardware self test Enter Set-Up 3 PRESS to Select Hdwr Test PRESS to Run Hdwr Test Testing Scsi Hdwr Test Ram Test & Reset InFourmm ======== Power On SelfTest C1537A Rev L610 5142 T133BID5 Figure 43 Activating a hardware self-test This diagnostic item provides you with a more thorough method of testing memory and peripheral hardware. 5.13.
Chapter Five - SCSI Bridge Electronics 5.13.4 Loading a Code Tape Enter Set-Up 3 PRESS to Select Load a CodeTape PRESS to Run Load a CodeTape PRESS to Confirm Load a CodeTape waiting for tape Load Tape Load a CodeTape PRESS to Escape Figure 45 Loading a code tape The SCSI bridge electronics firmware may be upgraded by reading a Code Load Tape. You will be prompted to insert the tape. DO NOT disturb the unit's power until the end of the procedure.
Chapter Six – Maintenance 6.1 5142-xSE Subsystem Tape Path Cleaning The Media Caution LED is located on the front panel of the tape drive. When it flashes amber, the tape heads are already dirty. DRIVE B DRIVE A Display Mode LCD LEDs Switch Tape Drive Eject Display LEDs Button Unit Figure 46 5142-xSE Media Caution LED Warning!!! The tape heads must be cleaned regularly. Different tape cartridges (60m, 90m, 120 and 125m) required different cleaning intervals.
Chapter Six – Maintenance 6.1.1 Using the Cleaning Cartridge Note: 1. To prevent contamination of the subsystem and damage to the heads (1) do not use the cleaning cartridge for more than the manufacturer's specified number of cleaning cycles; and (2) do not attempt to rewind the material in the cleaning cartridge and reuse it. Insert the cleaning cartridge into the drive. The drive automatically takes the cartridge, loads it and cleans the heads. After about 30 seconds, the drive ejects the cartridge.
Chapter Seven – Specifications 7.1 Electrical 7.1.1 Input Power • 7.1.2 Internal DC Power: • 7.2 -48 Volts DC +5, +12 volts Physical 7.2.1 Dimensions • 7.2.2 Shipping weight • 7.2.3 7.2.4 L113" x W19" x H7.0" 27 lbs.
Chapter Seven – Specifications 7.3 Display Unit • • • • 7.4 Signal Cables • 7.
Chapter Eight – Technical Support 8.
Index Agency Approvals 35 Cabling 35 Capacity 2 Controls and Indicators 9 DDS-3 Format and Compatibility 3 Dimensions 34 Display Unit Specifications 35 Electrical Specifications 34 Environmental Specifications 34 Installation 5 Interface 2 Interfaces 34 LCD 3 LEDs Additional LED Patterns 11 Media Caution LED 11 Tape Drive 10 Tape LED 11 Maintenance LCD 33 Operating Environment 33 Tape Path Cleaning 32 Numeric-Entry Method 22 Pick-Entry Method 22 Power On/Off 6 Recording Technology 2 SCSI Cabling Limitation
