Citizendia

PowerVM, formerly known as Advanced Power Virtualization, or APV, is the virtualization feature first made available with POWER4 based pSeries computer servers from IBM and enhanced with the later release of POWER5 and POWER6 range of computers. The POWER4 chip is a CPU that implements the 64-bit PowerPC architecture. The System p, formerly known as RS/6000, was IBM 's RISC / UNIX -based server and workstation product line International Business Machines Corporation abbreviated IBM and nicknamed "Big Blue", is a multinational Computer Technology POWER5 is a Microprocessor developed by IBM. It is an improved variant of the highly successful POWER4. The POWER6 microprocessor is IBM 's follow-on to the POWER5. It is part of the eCLipz project, said This is an implementation of hardware and software virtualization technology.

The IBM System p and System i family of products share the POWER5 and POWER6 technology platform which is based on the POWER4 hypervisor technology. The System p, formerly known as RS/6000, was IBM 's RISC / UNIX -based server and workstation product line The IBM System i is IBM's previous generation of systems designed for IBM i users and was subsequently replaced by the IBM Power Systems in April 2008 POWER5 is a Microprocessor developed by IBM. It is an improved variant of the highly successful POWER4. The POWER6 microprocessor is IBM 's follow-on to the POWER5. It is part of the eCLipz project, said The POWER4 chip is a CPU that implements the 64-bit PowerPC architecture.

In this case, virtualization means one computer running multiple operating systems (and their applications) at the same time. Each operating systems appears to be a separate machine but it is in fact hosted on a single server and sharing resource. When one operating system is not busy then typically its CPU time can be used by one of the others. This can be seen to either boost performance of the busy operating systems (by borrowing resources from unbusy ones) or save money (you buy less computer hardware to run a set of applications).

Contents

Description

PowerVM supports Logical Partitions (LPARs) (each LPAR runs a different operating system and its applications). In Computing, a logical partition, commonly called an LPAR, is a subset of computer's hardware resources virtualized as a separate computer A Logical Partition is defined by the resources assigned to it and can be started and stop independently. A Logical Partition has:

Each logical partition runs its own copy of the operating system (see below for the list) and has a high security rating for example the industry standard CAPP EAL4++ Security Certification for the AIX 5. 3 and the Virtual I/O Server. The machines are configured via a Hardware Management Console (HMC) which is a PC style device running special software and connected to the System p machine's embedded Flexible Service Processor (FSP). Hardware Management Console is a technology invented by IBM for the purpose of providing a standard interface to configuring and operating partitioned (also known The System p, formerly known as RS/6000, was IBM 's RISC / UNIX -based server and workstation product line Systems Administrators access the HMC directly on its keyboard, mouse and screen or remotely via a web browser in the latest release or PC software called WebSM in older releases.

The computers CPU and memory is allocated by size but controlled by the machines hypervisor and it actually decides which CPU or chunk of memory to allocate at LPAR start up time. In Computing, a hypervisor, also called virtual machine monitor, is a virtualization platform that allows multiple Operating systems to run on There are no restrictions and no barriers. For example, there are no special rules such as that particular CPUs must be allocate along with the RAM in certain memory slots. For shared CPU LPARs, the hypervisor dynamically decides which CPU a LPAR will run on next depending on the demand for CPU cycles.

From POWER5 onwards, CPUs are allocated as whole CPUs dedicated to a partitions logical partition or factions of a CPU can be allocated from the shared processor pool. These "micro-partitions" can make use of CPU time allocated to other logical partitions and yield their CPU time if not needed. Micro-Partitioning is a form of Logical partitioning which was introduced by IBM on systems using the POWER5 processor and is also referred to as a shared This means CPU power is moved to the logical partition that needs it with in milliseconds. CPU time is controlled by the following logical partition parameters:

Virtual disks, virtual networks and virtual optical devices are accessed via memory and the hypervisor. In Computing, a logical partition, commonly called an LPAR, is a subset of computer's hardware resources virtualized as a separate computer The underlying real resources are controls by a logical partition running a special dedicated operating system called the Virtual I/O Server, which is part of the PowerVM package.

Logical partitions can have dedicated hardware resources or virtual resources with no restrictions.

All System p or System i machines use PowerVM. The System p, formerly known as RS/6000, was IBM 's RISC / UNIX -based server and workstation product line The IBM System i is IBM's previous generation of systems designed for IBM i users and was subsequently replaced by the IBM Power Systems in April 2008 Systems running on POWER5 technology even while configured to run a single operating system still utilize the POWER hypervisor virtualization technology. An example of this is for High Performance Computer (HPC) environment where the user prefers to run a single system image (LPAR) to maximize the available memory and cpu resources, this if often referred to as SMP mode. High-performance computing (HPC uses Supercomputers and Computer clusters to solve advanced computing problems In Computing, a logical partition, commonly called an LPAR, is a subset of computer's hardware resources virtualized as a separate computer

On the POWER5 platform even if the system is configured without an Hardware Management Console and is running in single system mode, the hypervisor is still treats that system a single partition. POWER5 is a Microprocessor developed by IBM. It is an improved variant of the highly successful POWER4. Hardware Management Console is a technology invented by IBM for the purpose of providing a standard interface to configuring and operating partitioned (also known

Editions

PowerVM comes in three versions. All versions have these features:

PowerVM Express

PowerVM Standard

PowerVM Enterprise

Operating Systems

Logical partitions may run one of the following operating systems versions: Restrictions apply depending on the POWER Hypervisor technology family.

Other Linux distributions work but are not supported by IBM

Documentation

See also

External links

IBM i is an Operating system used on IBM Power Systems, a unified server platform from the former IBM System i and IBM System p servers IBM i is an Operating system used on IBM Power Systems, a unified server platform from the former IBM System i and IBM System p servers IBM i is an Operating system used on IBM Power Systems, a unified server platform from the former IBM System i and IBM System p servers SUSE Linux (ˈsuːsə is a major Operating system. The developer rights are owned by Novell Inc Red Hat Enterprise Linux is a Linux distribution produced by Red Hat and targeted toward the commercial market including mainframes. What do you mean by template here? The table below compares basic information about Virtual machine (VM packages Linux is a Computer Operating system that runs on Power Architecture technology a Microprocessor architecture POWER5 is a Microprocessor developed by IBM. It is an improved variant of the highly successful POWER4. The POWER6 microprocessor is IBM 's follow-on to the POWER5. It is part of the eCLipz project, said
© 2009 citizendia.org; parts available under the terms of GNU Free Documentation License, from http://en.wikipedia.org
 Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic