By IBM Redbooks
Read Online or Download IBM Pseries Sizing And Capacity Planning: A Practical Guide (IBM Redbooks) PDF
Best city planning & urban development books
Landscape Amenities: Economic Assessment of Agricultural Landscapes (Landscape Series, Vol. 2)
This publication maps issues of universal knowing and cooperation within the interpretation of landscapes. those interfaces look among cultures, among ordinary and human sciences, lay humans and specialists, time and area, maintenance and use, ecology and semiosis. The ebook compares how varied cultures interpret landscapes, examines how cultural values are assessed, explores new instruments for evaluation, lines the dialogue approximately panorama authenticity, and at last attracts views for extra learn.
Climate Resilient Cities: A Primer on Reducing Vulnerabilities to Disasters
'Climate Resilient towns: A Primer on lowering Vulnerabilities to mess ups' offers urban administratorswith precisely what they should find out about the advanced and compelling demanding situations of weather switch. The publication is helping neighborhood governments create education, means development, and capital funding courses for development sustainable, resilient groups.
Sustainable brownfield regeneration: liveable places from problem spaces
Sustainable Brownfield Regeneration offers a entire account of united kingdom rules, methods and practices in brownfield regeneration and takes an built-in and theoretically-grounded method of spotlight most sensible perform. Brownfield regeneration has turn into a tremendous coverage motive force in constructed nations.
Port Management and Operations
"This ebook was once written with the aim of redefining the strategic position of world seaports within the current "Post-New economic climate period. " Ports are those extraordinary human buildings that over centuries replicate the epitome of worldwide evolution, financial progress, and innovation. As 70. eight% of the worldwide floor is roofed through water, seaports mirror all sovereign international locations' political superiority and monetary prosperity.
Extra resources for IBM Pseries Sizing And Capacity Planning: A Practical Guide (IBM Redbooks)
Example text
Since October 2000, new servers with UNIX operating systems were introduced by the name of IBM eServer pSeries systems. pSeries systems come in various models from tower servers to midrange to rack-optimized and large-scale systems. Figure 2-4 provides a general overview of the product family. Chapter 2: Hardware Components 49 50 Chapter 2: Hardware Components Figure 2-4: pSeries product line All microprocessors in new pSeries servers use copper chip wiring, which offers 40 percent better conductivity than aluminum.
An on demand operating environment unlocks the value within the IT infrastructure to be applied to solving business problems. It is an integrated platform, based on open standards, to enable rapid deployment and integration of business applications and processes. Combined with an environment that allows true virtualization and automation of the infrastructure, it enables delivery of IT capability on demand. An on demand operating environment must be: • Flexible • Self-managing • Scalable • Economical • Resilient • Based on open standards IBM provides offerings that can be categorized into three primary areas, as shown in Figure 2-5: 52 Chapter 2: Hardware Components Chapter 2: Hardware Components 53 Figure 2-5: Overview of an on-demand operating environment • Integration: Provides the facilities to gain a unified view of processes, people, information, and systems • Automation: Overcomes the complexity of systems management to enable better use of assets, improved availability and resiliency, and reduced operating costs • Virtualization: Simplifies deployment and improves use of computing resources by hiding the details of the underlying hardware and system software, allowing for consolidation and the ability to adapt to changing demand The value of the operating environment is in the ability to dynamically link business processes and policies with the allocation of IT resources using offerings across all of these categories.
The definition of “sufficient” is determined by the facts that are available. There is no point in sizing to a higher accuracy than the input data provides. For example, sizing the I/O requirement to five decimal places when the data size was plus or minus 50% is clearly inappropriate. Table 1-3 is used within IBM as a standard for the levels of sizing. Table 1-3: Levels of sizing accuracy Level Level 0 34 Accuracy 500% Description Pure guess work Input data None or nearly none Time for the sizing 1 second Chapter 1: Overview, Concepts, and Approach Chapter 1: Overview, Concepts, and Approach Level 1 Level 2 100% Guess 30 to 40% Rough estimate Level 3 20% An opinion or estimate Level 4 10% Fairly accurate with known risks Level 5 2% Major problems if this is wrong Segmentation only Data from previous levels plus basic sizing data Data from previous levels plus detailed data or estimations of transactions rates Detailed break down of system based on measurements Transaction measured in clock cycles and physical and logical disk I/O 35 10 minutes 2 hours 8 hours to 2 days 5 days minimum 6 months minimum Each level of sizing details increases the accuracy (and decreases the inaccuracy) but requires more detailed relevant facts on which to base the sizing.
