6947ch08.fm

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

Initiation

Before a customer can order temporary capacity, they must have a signed agreement for Customer Initiated Upgrade (CIU) facility. In addition to this agreement, they will need to acknowledge and agree to additional specific terms which govern the use of temporary capacity. At the completion of signing a contract, an order is placed through CIU to install an On/Off CoD right to use feature. This feature cannot be installed if CBU is already active on the z990 server. Once installed, the customer is free to order and activate temporary capacity.

Ordering

Typically, On/Off CoD can only be ordered through CIU; however, there will be an RPQ available for customers who do not have an Remote Support Facility (RSF) connection.

If an order is attempted prior to establishing the right to use, or if the configuration has no permanent CPs, that order will not be processed. Similar to a permanent upgrade, the customer will order 1 to n CPs, ICFs, IFLs, and/or zAAPs worth of temporary capacity. A LIC record is established and staged to RETAIN® for this order where it remains available for 30 days. This record, once activated, has no expiration date; however, an individual record can only be activated once. Subsequent sessions will require a new order to be generated producing a new LIC record for that specific order.

Figure 8-9 on page 203 shows a Resource Link Web page that displays an On/Off CoD order example.

202IBM eServer zSeries 990 Technical Guide

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IBM 990 manual Initiation, Ordering
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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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