6947ch06.fm

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

d. z/VM V4.3 only.

e. z/VM 4.3 only with PTF for APAR VM63397. f. PUT 16.

g. For z/VM install, IPL, and operation from SCSI disks. h. z/VM V4.3 only. For Linux as a guest.

i. Planned for z/VSE V3.1 only (for FCP attached SCSI disks on the IBM ESS). j. See //http:www10.software.inm.com/developerworks/opensource/linux390. k. z/VM IPL from SCSI disks.

l. For Linux as a guest.

m. PUT 13 with PTF for APAR PJ2733. n. With PTF for APAR VM63405.

o. For one global VLAN ID for IPv6 (applies to OSA-Express 1000BASE-T Ethernet, Fast Ethernet, and GbE). p. For one global VLAN ID for IPv4 (applies to OSA-Express 1000BASE-T Ethernet, Fast Ethernet, and GbE). q. Applies to OSA-Express 1000BASE-T Ethernet, Fast Ethernet, and GbE with CHPID type OSD.

r. Applies to all OSA-Express features in QDIO mode (CHPID type OSD).

s. z/VM V4.3 only, applies to all OSA-Express features in QDIO mode (CHPID type OSD).

t. Applies to performance data, Get and GetNext, and Ethernet data for dot3StatsTable in QDIO mode, CHPID Type OSD.

6.8 Workload License Charges

Workload License Charges (WLC) is a software license charge method introduced with the z/Architecture.

WLC requires zSeries server(s) running z/OS operating system(s) in 64-bit mode. All MVS-type operating system images running in the zSeries server must be z/OS. Any mix of z/OS, z/VM, Linux, VM/ESA, VSE/ESA and TPF images is allowed, but no OS/390 image can exist.

There are two WLC license types:

￿Flat WLC (FWLC) - Software products licensed under FWLC are charged per copy basis, one copy for each zSeries server, independently of the server’s capacity (MSUs).

￿Variable WLC (VWLC) - VWLC software products can be charged in two different ways:

–Full-capacity. The server’s total number of MSUs is used for charging. Full-capacity is applicable when the server is not eligible for Sub-capacity.

–Sub-capacity Software charges are based on the logical partition’s utilization where the product is running.

WLC Sub-capacity allows software charges based on logical partition utilizations instead of the server’s total number of MSUs. Sub-capacity removes the dependency between software charges and server (hardware) installed capacity.

Sub-capacity is based on the logical partition’s rolling 4-hour average utilization. It is not based on the utilization of each product, but on the utilization of the logical partition or partitions where it runs. The VWLC licensed products running on a logical partition will be charged by the maximum value of this partition’s rolling 4-hour average utilization within a month.

The logical partitions’ rolling 4-hour average utilization can be limited by a “Defined Capacity” definition on the partitions’ image profiles. This activates the “Soft Capping” function of PR/SM, avoiding 4-hour average partition utilizations above the defined capacity value. Soft capping controls the maximum rolling 4-hour average utilization (the “last” 4-hour average value at every 5 minutes interval), but does not control the maximum “instantaneous” partition utilization.

150IBM eServer zSeries 990 Technical Guide

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IBM 990 manual Workload License Charges
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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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