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

6947ch08.fm

–On/Off CoD Active IFL (FC 9888)

–On/Off CoD Active ICF (FC 9889)

–On/Off CoD Active zAAP (FC 9893)

You may concurrently install temporary capacity by ordering On/Off CoD Active CP features up to the number of current CPs, On/Off CoD Active IFL features up to the number of current IFLs, On/Off CoD Active ICF features up to the number of current ICFs, and On/Off CoD Active zAAP features up to the number of current zAAPs that are permanently purchased. In other words, the upgrade configuration capacity is limited to the double of the current installed capacity, for each individual processor type (CPs, IFLs, ICFs and zAAPs).

Also, the total number of On/Off CoD Active zAAPs plus zAAPs cannot exceed the number of On/Off Active CPs plus the number of CPs plus the number unassigned CPs on a z990 server. The sum of CPs, unassigned CPs, IFLs, unassigned IFLs, ICFs, and zAAPs cannot exceed 8 PUs per book. The number of zAAPs cannot exceed 4 zAAPs per book.

The CIU process will continue to bill for the upgrade on a daily basis until it detects the On/Off CoD has been deactivated. When the temporary capacity is no longer required, its removal is nondisruptive. If On/Off CoD is activated on a z990 server, other hardware upgrades/MES are restricted. With exception of memory and channels, LIC-CC enabled features such as CPs, ICFs, IFLs, and zAAPs can be ordered but not enabled until the On/Off CoD upgrade is deactivated.

The customer’s user will then be able to download and apply the upgrade using functions on the HMC via the Remote Support Facility, without requiring the assistance of IBM service personnel. Once all the prerequisites are in place, the whole process from ordering to activation of the upgrade is performed by the customer. The actual upgrade process is fully automated and does not require any on-site presence of IBM service personnel.

Additional logical processors can be concurrently configured online to logical partitions by the operating system when reserved processors are previously defined, resulting in image upgrades. The operating system must have the capability to concurrently configure more processors online.

Note: On/Off CoD provides a “physical” concurrent upgrade, resulting in more enabled

processors available to a server configuration. Thus, additional planning and tasks are required for nondisruptive “logical” upgrades. See “Recommendations to avoid disruptive

upgrades” on page 216.

To participate in this offering, customers must have accepted contractual terms for On/Off CoD (in addition to Customer Initiated Upgrade (CIU)), established a CIU profile and installed an On/Off CoD “right to use” feature onthe machine. Subsequently, the customer may concurrently install temporary capacity in any amount and use it for an indeterminate time. The customer will be billed on a monthly basis. If the customer installs more than one On/Off CoD order within a billing month, they will be billed for the greater of all orders installed within that month. Monitoring will occur through the server call home facility and an invoice will be generated if the capacity has been enabled for any portion of a calendar month.

The customer will continue to be billed for use of temporary capacity until they return the server to the original state. After concurrently returning to the original state, the customer may choose to activate a new temporary session which can be different from the previous session. When the customer disposes of the server, or decides that they want to disable future On/Off CoD, the customer is required to apply a termination feature which disables the right to use.

Chapter 8. Capacity upgrades 201

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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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