IBM TS2340 User Guide - Page 73

HP-UX Tape and Medium Changer Device Driver, Purpose, Data Flow

Page 73 highlights

Chapter 4. HP-UX Tape and Medium Changer Device Driver Purpose 55 Data Flow 55 Product Requirements 56 ATDD Implementation 56 Hardware Requirements 56 Software Requirements 57 Software Interface to the Device Driver . . . . 58 Installation and Configuration Instructions . . . . 58 Installation and Configuration for PCI Drivers. . 58 Installation and Configuration of Precision Bus Drivers 66 Supported Configuration Parameters 75 Configuration Parameter Definitions . . . . . 75 Special Files 79 Persistent Naming Support 80 Control Path Failover Support for Tape Libraries . . 81 Configuring and Unconfiguring Path Failover Support 81 Primary and Alternate Paths 82 Querying Primary and Alternate Path Configurations 82 Disable and Enable Primary and Alternate Paths 82 Data Path Failover and Load Balancing Support for Tape Drives 83 Configuring and Unconfiguring Path Failover Support 83 Primary and Alternate Paths 84 Querying Primary and Alternate Path Configuration 85 Disable and Enable Primary and Alternate Paths 85 Problem Determination 85 Error Logging 85 Reservation Conflict Logging 85 Sense Data Logging 86 Support_info Script 86 Tracing Facility 86 Atdd_d Log Daemon 87 Problems and Solutions 89 This chapter provides an overview of the IBM Tape and Medium Changer Device Driver for HP-UX that provides support for IBM tape drives and medium changer devices. For tape diagnostic and utility functions refer to Chapter 10, "IBM Tape Diagnostic Tool (ITDT)," on page 259 or "HP-UX System - Tape Utility Program (tapeutil)" on page 375. Purpose This device driver product provides SCSI-3 attachment for the IBM tape devices to selected Hewlett-Packard Precision Bus and PCI-based operating systems running HP-UX 10.20, 11.0, 11i v1, 11i v2, and 11i v3. The HP-UX installed name of this device driver is Advanced Tape Device Driver (ATDD). ATDD is used throughout this section to identify this driver. ATDD is designed specifically to take advantage of the features provided by the IBM tape devices (refer to "Supported Hardware" on page 9. The goal is to give applications access to the functions required for basic operations (such as backup and restore) and the advanced functions needed by full tape management systems. Whenever possible, the device driver is designed to take advantage of the IBM tape system features transparent to the application. Data Flow Both data and commands flow between the application program and the tape subsystem by way of the IBM Tape and Medium Changer Device Driver for HP-UX (ATDD). Figure 9 on page 56 shows the relationships between the IBM Tape and Medium Changer Device Driver for HP-UX, the application program, the SCSI or Fibre Channel adapter device driver, and the IBM tape subsystem. © Copyright IBM Corp. 2007, 2009 55

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Chapter 4. HP-UX Tape and Medium Changer Device Driver
Purpose
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Data Flow
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Product Requirements
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ATDD Implementation
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Hardware Requirements
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Software Requirements
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Software Interface to the Device Driver
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Installation and Configuration Instructions
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Installation and Configuration for PCI Drivers.
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Installation and Configuration of Precision Bus
Drivers
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Supported Configuration Parameters
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Configuration Parameter Definitions
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Special Files
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Persistent Naming Support
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Control Path Failover Support for Tape Libraries .
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Configuring and Unconfiguring Path Failover
Support
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Primary and Alternate Paths
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Querying Primary and Alternate Path
Configurations
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Disable and Enable Primary and Alternate Paths
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Data Path Failover and Load Balancing Support for
Tape Drives
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Configuring and Unconfiguring Path Failover
Support
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Primary and Alternate Paths
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Querying Primary and Alternate Path
Configuration
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Disable and Enable Primary and Alternate Paths
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Problem Determination
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Error Logging
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Reservation Conflict Logging
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Sense Data Logging
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Support_info Script
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Tracing Facility
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Atdd_d Log Daemon
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Problems and Solutions
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89
This chapter provides an overview of the IBM Tape and Medium Changer Device
Driver for HP-UX that provides support for IBM tape drives and medium changer
devices.
For tape diagnostic and utility functions refer to Chapter 10, “IBM Tape Diagnostic
Tool (ITDT),” on page 259 or “HP-UX System - Tape Utility Program (tapeutil)” on
page 375.
Purpose
This device driver product provides SCSI-3 attachment for the IBM tape devices to
selected Hewlett-Packard Precision Bus and PCI-based operating systems running
HP-UX 10.20, 11.0, 11i v1, 11i v2, and 11i v3.
The HP-UX installed name of this device driver is Advanced Tape Device Driver
(ATDD).ATDD is used throughout this section to identify this driver.
ATDD is designed specifically to take advantage of the features provided by the
IBM tape devices (refer to “Supported Hardware” on page 9. The goal is to give
applications access to the functions required for basic operations (such as backup
and restore) and the advanced functions needed by full tape management systems.
Whenever possible, the device driver is designed to take advantage of the IBM
tape system features transparent to the application.
Data Flow
Both data and commands flow between the application program and the tape
subsystem by way of the IBM Tape and Medium Changer Device Driver for
HP-UX (ATDD). Figure 9 on page 56 shows the relationships between the IBM
Tape and Medium Changer Device Driver for HP-UX, the application program, the
SCSI or Fibre Channel adapter device driver, and the IBM tape subsystem.
© Copyright IBM Corp. 2007, 2009
55