Contents

Safety and Environmental Notices

. .

. v

Danger Notices

. .

.

. v

Caution Notices

. .

.

. v

Laser Safety Information

. .

.

vi

Product Recycling and Disposal. . . .

. .

.

vi

Battery Return Program

. .

.

vi

Environmental Design

. .

.

vi

About Setting up your 0578, 5074, 5078

or 5079 Expansion Unit (SA41–5149) . . vii

Who should read this book . . . . . . . . . vii Prerequisite and related information . . . . . . vii iSeries Navigator . . . . . . . . . . . . vii How to send your comments . . . . . . . . viii

Chapter 1. Preparing to set up your 5074 or 5079 Expansion Unit . . . . . . . . 1

Hardware requirements

.

.

1

Site planning considerations for the 5079 . . .

.

.

1

Identifying HSL and SPCN Cables . . . .

.

. 2

Planning your cable layout

.

.

2

Configuration rules

.

.

5

Powering down your iSeries system unit . . . . . 6

Chapter 2. Setting up your 5074

expansion unit . . . . . . . . . . . . 9

Connecting your 5074 directly to your system unit . 9 Connecting your 5074 to another expansion unit . . 10 Connecting your 5074 at the beginning of a loop 11 Connecting your 5074 to the middle of a loop . . 13 Connecting your 5074 to the end of a loop . . . 14

Chapter 3. Setting up your 0578

expansion unit . . . . . . . . . . . 15 Connecting your 0578 directly to your system unit 15

Chapter 4. Setting up your 5079 Expansion Unit . . . . . . . . . . . 19

Connecting your 5079 directly to your system unit 19 Connecting your 5079 to another expansion unit . . 22

Connecting your 5079 at the beginning of a loop 22 Connecting your 5079 in the middle of a loop . . 24 Connecting your 5079 to the end of a loop . . . 25

Chapter 5. Completing your installation 27

Chapter 6. Verifying Your New Configuration . . . . . . . . . . . . 29

Appendix A. Removing the back covers 31

5075 and 820 back cover . . . . . . . . . . 31 5074, 830 and 890 back cover . . . . . . . . 31 5079 and 840 back cover . . . . . . . . . . 32 Accessing units in a rack . . . . . . . . . . 34

Appendix B. Connector Locations . . . 35

820 HSL connector locations . . . . . . . . . 35 830 HSL connector locations . . . . . . . . . 36 840 HSL connector locations . . . . . . . . . 37 890 HSL connector locations . . . . . . . . . 38 5079 connector locations . . . . . . . . . . 39 5074 connector locations . . . . . . . . . . 40 5075 connector locations . . . . . . . . . . 41 5078 connector locations . . . . . . . . . . 41

Appendix C. System unit control panel 43

Appendix D. Cabling rules for systems with a migration unit or the 9079 and

9094 expansion unit . . . . . . . . . 45

Notices . . . . . . . . . . . . . . 51

Trademarks . . . . . . . . . . . . . . 52 Electronic Emission Notices . . . . . . . . . 53

Federal Communications Commission (FCC) Statement . . . . . . . . . . . . . . 53

Electronic Emission Notices . . . . . . . . . 54 Federal Communications Commission (FCC) Statement . . . . . . . . . . . . . . 54

© Copyright IBM Corp. 2000, 2002

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IBM 5078, 578, 5074, 5079 manual Contents

5078, 5079, 578, 5074 specifications

The IBM 5074, 578, 5079, and 5078 are part of IBM's influential line of midrange computer systems that emerged during the late 1970s and early 1980s. These models were pivotal in the evolution of business computing at a time when companies were increasingly adopting automated systems for data processing tasks.

The IBM 5074, also known as the IBM 5100 Series, was particularly notable for being one of the first portable computers, offering a versatile computing environment for both technical and business applications. It featured an impressive combination of hardware and software capabilities, including a built-in keyboard, a screen, and the ability to run various programming languages. Both APL and BASIC were readily available, making it a popular choice for developers and mathematicians alike.

The 578 model was an advanced variant of the 5074, emphasizing enhanced performance and expanded memory capacity. The 578 integrated more sophisticated I/O capabilities, which included diverse connection options for external devices. This system was geared toward small and medium enterprises requiring robust computing power without the complexities of mainframe management.

The IBM 5079, on the other hand, distinguished itself with its unique multi-user capabilities, allowing for simultaneous access by multiple users. This built-in support for multitasking made it a formidable tool in office environments where collaboration and efficient resource sharing were paramount. Its operating system was designed to optimize performance across various applications, facilitating smoother operations in busy work environments.

Lastly, the IBM 5078 served as a bridge between traditional minicomputers and the growing demand for microcomputing solutions. It included critical innovations in processing speed and data handling capabilities, allowing businesses to better manage their operations. With a focus on reliability and uptime, the 5078 was engineered for critical business functions that demanded robust performance in a pragmatic package.

Together, these models underscored IBM's commitment to innovation and adaptability in the computing landscape of the late 20th century. They set the groundwork for future advancements in personal computing and enterprise systems, influencing generations of technology that followed. Their legacy is a testament to the evolution of computing technology, showcasing concrete advancements in capability, efficiency, and user accessibility.