6947ch06.fm

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

Important: The need for ICKDSF Release 17 applies even to systems that are not part of the same sysplex, or that are running a non-MVS™ based operating system, such as z/VM.

6.2.8 ICSF support

If you use z990 cryptographic hardware functions with ICSF, then you must install

Compatibility support for this feature.

Important: The ICSF Compatibility support is available for OS/390 V2.10, z/OS V1.3 and V1.4. Later releases have this support incorporated.

If you are running on an earlier level of OS/390 or z/OS, then you must upgrade the logical partition calling ICSF to either OS/390 V2.10, z/OS V1.3, or V1.4 before you can move that environment onto a z990 processor.

The PCIXCC features are the cryptographic hardware for the z990 that support Secure Keys. Clear Key support is provided by the PCICA cards and the CP Assist for Cryptographic Function.

6.2.9 Additional exploitation support considerations

The following areas need to be considered when running z/OS in exploitation mode:

SMF

SMF type 89 record is used for recording Product Usage data and is extended for Exploitation mode support. A new field, SMF89LP3, allows an 8-bit LPAR id to be stored. This field is marked valid by the new flag bit SMF89LPM. When an LPAR id is less than or equal to x’F’, the LPAR id is stored in both the new field and the old 4-bit SMF89LP2 field to maintain compatibility.

Standalone dump

z/OS systems that have Exploitation support installed must generate a new version of the standalone dump program. This standalone dump program cannot be used for dumping systems at earlier releases of z/OS or z/OS V1.4 systems that have only the Compatibility support installed.

Automation

The output from the D M=CPU command shows the two-digit LPAR id (set in the image profile), the LCSS id associated with the logical CPUs associated with the logical partition in that LCSS, and the MIF ID; see Figure 6-4.The logical CPU address no longer appears in the first digit of the serial number, as a result of the change to the STIDP instruction.

142IBM eServer zSeries 990 Technical Guide

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IBM 990 manual Icsf support, Additional exploitation support considerations, Standalone dump, Automation
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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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