IBM 578, 5078, 5074, 5079 manual Powering down your iSeries system unit

Page 16

Table 4. Configuration rules (continued)

System or expansion unit

Configuration rules

 

 

iSeries 830

v The 830 can have a maximum of 13 expansion units on

 

 

four HSL loops.

 

v Connect HSL loops to the 830 in this order (see

 

 

Appendix B, “Connector Locations” on page 35):

 

 

1.

B0 and B1

 

 

2.

C0 and C1

 

 

3.

D0 and D1

 

 

4.

A0 and A1

 

v Connectors A0 and A1, can have one 5074.

 

v Connectors B0 and B1; C0 and C1; D0 and D1, can have

 

 

up to four expansion units.

 

v These rules apply for all expansion units except

 

 

migration units which always go on A0 and A1.

 

 

 

iSeries 840

v

The 840 can have a maximum of 23 expansion units.

 

v The 840 can have a maximum of eight HSL loops.

 

v Each HSL loop can have a maximum of four expansion

 

 

units.

 

 

 

iSeries 890

v

The 890 can have a maximum of 47 expansion units.

 

v

The 890 can have a maximum of 32 external xSeries

 

 

servers.

 

v The 890 can have a maximum of 12 HSL loops on a

 

 

24–way and 14 HSL loops on a 32–way.

 

v The 890 can have a maximum of five external xSeries

 

 

servers per loop.

 

 

 

 

Powering down your iSeries system unit

You need to power down your system unit before you can connect your new expansion unit to it. Follow the steps below to power down your system unit.

__ 1. Ensure that you have a current backup of your operating system and licensed programs. If you have backed up the operating system and licensed programs since the last time you applied program temporary fixes (PTFs), that backup is acceptable.

__ 2. If you have installed logical partitions on your system unit, refer to Logical partitions in the iSeries Information Center. In the iSeries Information Center you can find instructions on powering down a system with logical partitions.

__ 3. Ensure that all jobs are complete.

__ 4. When all jobs are complete, type pwrdwnsys *immed on an command line and press the Enter key.

Note: If you encounter difficulties during the installation, contact your authorized dealer or service provider.

__ 5. After your system unit has completely powered down, power off all PCs and devices, such as printers and display stations, that are connected to the system unit.

__ 6. Unplug any power cords, such as for printers, expansion units, and display stations, that are connected to the system unit.

__ 7. Unplug the power cord for the system unit from the electrical outlet.

6Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2

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Contents ERserver Page ERserver Third Edition August Contents Page Safety and Environmental Notices Laser Safety Information Battery Return ProgramProduct Recycling and Disposal Environmental DesignPrerequisite and related information Who should read this bookISeries Navigator How to send your comments Hardware requirements Preparing to set up your 5074 or 5079 Expansion UnitSite planning considerations for Identifying HSL and Spcn Cables Planning your cable layoutPlacing power cords for Planning for redundant link with two expansion units Configuration rules System or expansion unit Configuration rulesPowering down your iSeries system unit Preparing to set up your 5074 or 5079 Expansion Unit Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Setting up your 5074 expansion unit Connecting your 5074 directly to your system unitConnecting your 5074 to another expansion unit Connecting your 5074 at the beginning of a loop HSL connectionsRemove or open the back cover from your 5074. See Appendix a Connecting your 5074 to the middle of a loop Connecting your 5074 to the end of a loop Setting up your 0578 expansion unit Connecting your 0578 directly to your system unitSetting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Setting up your 0578 expansion unit Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Setting up your 5079 Expansion Unit Connecting your 5079 directly to your system unitHSL Connections Setting up your 5079 Expansion Unit Connecting your 5079 to another expansion unit Connecting your 5079 at the beginning of a loopConnectors Connecting your 5079 in the middle of a loop Connecting your 5079 to the end of a loop Connect the HSL cable that you installed in b to HSL Completing your installation Yes NoSetting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Verifying Your New Configuration Frame Unit Type Number Fault 00-00000 820 back cover Appendix A. Removing the back covers5074, 830 and 890 back cover 840 back cover Open the back cover on your 5079 by pressing the latch atOpening the 5079 and 840 back cover Accessing units in a rack Appendix B. Connector Locations HSL connector locationsHSL connector locations Appendix B. Connector Locations HSL connector locations Connector locations Connector locationsConnector locations Connector locations Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Appendix C. System unit control panel Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 System unit Rule HSL loop with HSL loop with four external units Spcn loop with HSL loop with Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Copyright IBM Corp Trademarks IBMPage Electronic Emission Notices Industry Canada Compliance StatementIndustry Canada Compliance Statement Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Readers’ Comments We’d Like to Hear from You How satisfied are you that the information in this book isBusiness Reply Mail Page SA41-5149-02

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.
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