6947IX.fm

Dynamic I/O configuration 71 Dynamic ICF Expansion 166 Dynamic Storage Reconfiguration 71

E

e-Config 115 EE 100

Enterprise Extender 100 ESA/390 Architecture Mode 69 ESA/390 mode 68

ESA/390 TPF mode 69 ESCON 9, 84, 180

ESCON port sparing and upgrading 71 ETR 84, 91

ETR port 25 Expanded storage 55 Expanded storage (ES) 55 Exploitation support for z/OS 137

F

FCP 97

FCP concurrent patch 98 FCP SCSI IPL feature 98 Feature

16-port ESCON (2323) 93 Fiber Quick Connect 92, 95 FICON 180

FICON Cascaded Directors 10 FICON CTC function 10 FICON Express 9, 84, 96 FICON Express LX feature 96 FICON Express SX feature 97 Flexible Channel 10

Frame A 33

Frame Z 33 frames 33

Frames and cages 33

G

GDPS 170, 207

GDPS/PPRC 170

GDPS/XRC 174 Gigabit Ethernet 11

glass ceramic substrate 5, 35 Goal mode 177

Goal mode WLM policy 180

H

hardware compression 43

Hardware Configuration Definition 61 Hardware Configuration Dialog 112, 115 Hardware Management Console 15, 66, 112, 235 Hardware System Area 61

Hardware System Area (HSA) 56 HCD 60–61, 112–113, 115 HiperSockets function 103 HMC 66, 112, 235

HMC Integrated 3270 Console 243

Draft Document for Review April 7, 2004 6:15 pm

HMC Integrated ASCII Console support 244 HSA 61

I

I/O cage 8, 24, 75 I/O connectivity 8 I/O definition file 115 I/O features cables 92 I/O path 180

I/O performance 181 I/O Priority Queuing 15 IBM 9034 84

IC 162

IC3 14 ICB-2 14, 162 ICB-2 link 105 ICB-3 14, 162 ICB-3 link 105 ICB-4 14, 86, 162 ICB-4 link 105

ICF 6, 47–48, 62, 64, 214 IEEE Floating Point 45 IFA 49

IFL 6, 46–47, 62, 64, 213

Input/Output Configuration Dataset 115 Instruction grouping 45

Integrated Cryptographic Service Facility 123 Integrated Facility for Applications 49 Integrated Facility for Linux 47

Intelligent Resource Director (IRD) 15 Internal Battery Feature 34 Internal Coupling Facility (ICF) 48 IOCDS 61, 113, 115

IOCP 60

IODF 115 ISC-3 13, 84, 162

ISC-3 Daughter card 104 ISC-3 link 104

ISC-3 Mother card 104

L

L1 cache

39, 46

 

L2 cache

30, 36, 39, 46

 

LAN Grid Arrays

5, 35

 

Large Systems Performance Reference (LSPR) 223

LCSS

3, 72, 110

 

LCSS Configuration Management

115

LCSS structure

110

 

LICCC

5

 

 

 

Linux

47,

60

 

 

Integrated Facilities for Linux

47

storage 69

 

 

Linux on zSeries

20, 147

 

Linux Only mode

69

 

logical book structure 39 logical channel subsystem 61 Logical Channel Subsystems 110 Logical Processor 58

LPAR 180, 182

264IBM eServer zSeries 990 Technical Guide

Page 277 Page 279
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Image 278
IBM 990 manual Gdps/Pprc
Page 277 Page 279

990 specifications

The IBM 990 series, often referred to in the context of IBM's pioneering efforts in the realm of mainframe computing, represents a unique chapter in the history of information technology. Introduced in the late 1960s, the IBM 990 series was designed as a powerful tool for enterprise-level data processing and scientific calculations, showcasing the company's commitment to advancing computing capabilities.

One of the main features of the IBM 990 was its architecture, which was built to support a wide range of applications, from business processing to complex scientific computations. The system employed a 32-bit word length, which was advanced for its time, allowing for more flexible and efficient data handling. CPUs in the IBM 990 series supported multiple instructions per cycle, which contributed significantly to the overall efficiency and processing power of the machines.

The technology behind the IBM 990 was also notable for its use of solid-state technology. This provided a shift away from vacuum tube systems that were prevalent in earlier computing systems, enhancing the reliability and longevity of the hardware. The IBM 990 series utilized core memory, which was faster and more reliable than the magnetic drum memory systems that had been standard up to that point.

Another defining characteristic of the IBM 990 was its extensibility. Organizations could configure the machine to suit their specific needs by adding memory, storage, and peripheral devices as required. This modular approach facilitated the growth of systems alongside the technological and operational demands of the business environments they served.

In terms of software, the IBM 990 series was compatible with a variety of operating systems and programming environments, including FORTRAN and COBOL, enabling users to access a broader array of applications. This versatility was a significant advantage, making the IBM 990 an appealing choice for educational institutions, research facilities, and enterprises alike.

Moreover, the IBM 990 was engineered to support multiprocessing, which allowed multiple processes to run simultaneously, further increasing its effectiveness in tackling complex computing tasks.

In summary, the IBM 990 series represents a significant advancement in computing technology during the late 20th century. With a robust architecture, versatile configuration options, and a focus on solid-state technology, the IBM 990 facilitated substantial improvements in data processing capabilities, making it a cornerstone for many businesses and academic institutions of its time. Its impact can still be seen today in the continued evolution of mainframe computing.
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