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Using N_Port ID Virtualization (NPIV) with kernel-based virtual machine (KVM) guests on IBM Power servers
This article provides the basic steps to use N-Port ID Virtualization (NPIV) technology in a kernel-based virtual machine (KVM) guest. Additionally, the article also provides the significance of NPIV allowing multiple guests to make use of a single physical host bus adapter (HBA) to access multiple storage devices.
08 Jan 2018
Explore the OpenStack REST APIs for PowerVC
IBM Power Virtualization Center (PowerVC) is an OpenStack-based IaaS cloud solution for the IBM Power platform designed to simplify the management of virtual resources. PowerVC consists of both a GUI and RESTful APIs that perform virtual management tasks for your Power System. This article highlights the REST APIs for both PowerVC Standard Edition and Cloud PowerVC Manager.
Also available in: Chinese   Russian   Japanese   Portuguese  
02 Aug 2017
Red Hat Virtualization (RHV) environment on IBM Power Systems
This article describes how to install and configure RHV components based on RHEL 7.3 LE, on an IBM POWER8 host.
13 Feb 2017
Tuning guide for MongoDB on IBM Power Systems
This tuning guide will help you achieve optimal performance when running MongoDB on IBM Power Systems by providing guidelines for system-level, virtualization-level and application-level tuning.
Also available in: Chinese  
24 Jun 2016
Get started with IBM Power Virtualization Center (PowerVC)
Virtualization plays a key role in cloud computing. IBM Power Virtualization Center (PowerVC) is a new virtualization management tool that's built on OpenStack and designed to simplify the management of virtual resources in Power Systems environments, and thus improve administrator productivity. In this tutorial, we'll cover fundamental concepts, installation, and basic configuration techniques, as well as ways to configure various resources like hosts, storage, and networks. We'll also take a look at virtual machines and images, and show you how to create and manage a VM using PowerVC with the help of screens.
Also available in: Chinese   Japanese  
09 Mar 2016
Use Software Defined Networking to optimize your IaaS
Explore Software Defined Networking (SDN) network management via software abstraction layers as a method to enhance and optimize your Infrastructure as a Service in the areas of interoperability, user and provider expectation management, developer and administrator requirements, and effective risk mitigation.
Also available in: Chinese   Russian   Japanese   Portuguese  
24 Jun 2014
Using KVM virtualization
Kernel-based virtual machine (KVM) virtualization has largely replaced Xen as the default open source mechanism for creating and supporting virtual machines (VMs) on most Linux systems. Though the motivation for this change is primarily build and support related rather than technical, the reality is that many enterprise IT groups that are interested in virtualization will need to learn the administrative command-and-control tools that KVM uses. Similarly, IT shops with an existing investment in Xen virtualization that are moving to KVM will probably want to convert existing VMs to the formats that KVM supports whenever possible, rather than having to re-create them.
Also available in: Chinese   Russian   Japanese  
09 Jan 2014
Virtualize the IBM DB2 pureScale Feature on Linux using Kernel-based Virtual Machine
Learn how you can improve your return on investment when you deploy the IBM DB2 pureScale Feature with Linux on IBM System x servers. Modern System x servers have an ample number of cores and amount of memory and I/O capability. By using virtualization technology, you can deploy multiple DB2 pureScale instances on a common infrastructure and achieve greater efficiency.
Also available in: Chinese   Portuguese  
25 Oct 2012
Accelerate to Green IT - A practical guide to application migration and re-hosting
This guide has been developed based on implementation experience in moving application workloads from a distributed environment, such as AIX workload on Power or pSeries, RS 6000 hardware, Solaris workload on Sun hardware or Linux workload on x86 hardware (that is, IBM eServer to IBM System z primarily IBM System z9 or z10 models).
Also available in: Chinese   Japanese   Portuguese   Spanish  
16 Jul 2012
Introducing the 3.3 and 3.4 Linux kernels
In March 2012, version 3.3 of the Linux kernel was released (followed in by version 3.4 in May). In addition to a plethora of small features and bug fixes, several important changes have arrived with these releases, including the merging of the Google Android project; merging of the Open vSwitch; several networking improvements (including the teaming network device); and a variety of file system, memory management, and virtualization updates. Explore many of the important changes in versions 3.3 and 3.4, and have a peek at what's ahead in 3.5.
Also available in: Chinese   Russian   Japanese  
19 Jun 2012
Porting applications to Linux for System z
Server consolidation based on Linux for IBM System z offers advantages, but moving existing applications requires some specialized knowledge. In this article, get general advice on how to organize your porting project, including technical details on mainframe virtualization, byte-ordering, and address calculation specific to System z. This article also covers how development tools (compiler, linker, debugger) are supported on System z, and introduces IBM's free-of-charge Migration Kit for Solaris OS to Linux.
Also available in: Russian   Portuguese  
08 Jun 2012
Track KVM guests with libvirt and the Linux audit subsystem
Libvirt is an important tool for managing virtualized environments on Linux hosts. An audit trail of events that occur on the host during libvirt's execution is often necessary for monitoring, compliance, forensics, and other purposes. This article describes how to use the Linux audit subsystem on the host to track operations performed by libvirt and how to correlate the events with other host events to provide a consistent and comprehensive view of changes performed through libvirt.
Also available in: Chinese   Russian   Japanese  
05 Jun 2012
Repair cloud virtual machine cloning errors
External data provisioning requirements such as network configurations like IP addresses can cause problems when cloning a virtual machine to use in a new environment. If the external data is not available during the process, the reconfiguration of the VM will likely be incomplete. The authors offer a way to handle this problem, even without much knowledge of the application or without a form of activation scripting to help. Runtime Image Activation (RIA) is a prototype command-line interface that lets you orchestrate networking techniques to make sure your cloned VMs are appropriately configured.
Also available in: Chinese   Russian   Japanese   Portuguese  
20 Feb 2012
Application virtualization, past and future
When you hear the phrase "virtual machine" today, you probably think of virtualization and hypervisors. But VMs are simply an older concept of abstraction, a common method of abstracting one entity from another. This article explores two of the many newer open source VM technologies: Dalvik (the VM core of the Android operating system) and Parrot (an open source VM technology for efficiently executing dynamic languages).
Also available in: Russian   Japanese   Portuguese   Spanish  
03 May 2011
Virtualization for embedded systems
Today's technical news is filled with stories of server and desktop virtualization, but there's another virtualization technology that's growing rapidly: embedded virtualization. The embedded domain has several useful applications for virtualization, including mobile handsets, security kernels, and concurrent embedded operating systems. This article explores the area of embedded virtualization and explains why it's coming to an embedded system near you.
Also available in: Russian   Japanese   Portuguese  
19 Apr 2011
Manage resources on overcommitted KVM hosts
A key benefit of virtualization is the ability to consolidate multiple workloads onto a single computer system. This consolidation yields savings in power consumption, capital expense, and administration costs. The degree of savings depends on the ability to overcommit hardware resources such as memory, CPU cycles, I/O, and network bandwidth. Technologies such as memory ballooning and Kernel Same-page Merging (KSM) can improve memory overcommitment with proper manual tuning. Autonomic reconfiguration of these controls in response to host and VM conditions can result in even greater savings. In this article, learn how to apply these techniques to increase your savings.
Also available in: Russian   Japanese   Portuguese  
08 Feb 2011
Platform emulation with Bochs
Bochs, like QEMU, is a portable emulator that provides a virtualization environment in which to run an operating system using an emulated platform in the context of another operating system. Bochs isn't a hypervisor but rather a PC-compatible emulator useful for legacy software. Learn about platform emulation using Bochs and its approach to hardware emulation.
Also available in: Japanese  
25 Jan 2011
Automate virtual machine discovery and self-connectivity
In a virtual data center the deployment and the dismissal of complex appliances require that multiple configuration steps be executed. Reconfiguration requirements include establishing and removing communication between different components of the same product running in different virtual machines (VMs) as well as different products running in different VMs. Traditionally this process has been burdensomely manual or somewhat inflexible via the invoking of predefined scripts with static values. In this article, the authors propose StereoCable, automated plug-and-play support of complex virtual appliances in a virtual data center, to solve this issue. This way VMs are able to discover and automatically connect to each other based on predefined connections policies.
Also available in: Chinese   Portuguese  
01 Nov 2010
Virtual networking in Linux
With the explosive growth of platform virtualization, it's not surprising that other parts of the enterprise ecosystem are being virtualized, as well. One of the more recent areas is virtual networking. Early implementations of platform virtualization created virtual NICs, but today, larger portions of the network are being virtualized, such as switches that support communication among VMs on a server or distributed among servers. Explore the ideas behind virtual networking, with a focus on NIC and switch virtualization.
Also available in: Russian   Japanese   Portuguese  
27 Oct 2010
Virtio: An I/O virtualization framework for Linux
The Linux kernel supports a variety of virtualization schemes, and that's likely to grow as virtualization advances and new schemes are discovered (for example, lguest). But with all these virtualization schemes running on top of Linux, how do they exploit the underlying kernel for I/O virtualization? The answer is virtio, which provides an efficient abstraction for hypervisors and a common set of I/O virtualization drivers. Discover virtio, and learn why Linux will soon be the hypervisor of choice.
Also available in: Japanese   Spanish  
29 Jan 2010
Create a KVM-based virtual server
In three relatively simple steps, you can create a virtual server on the Linux KVM hypervisor host using full virtualization. The Kernel-based Virtual Machine (KVM) is free, open source virtualization software for Linux that is based on hardware virtualization extensions (Intel VT-X and AMD-V) and a modified version of QEMU.
Also available in: Japanese   Portuguese   Spanish  
19 Jan 2010
Anatomy of the libvirt virtualization library
The libvirt library is a Linux API over the virtualization capabilities of Linux that supports a variety of hypervisors, including Xen and KVM, as well as QEMU and some virtualization products for other operating systems. This article explores libvirt, its use, and its architecture.
Also available in: Japanese   Portuguese   Spanish  
05 Jan 2010
Virtual appliances and the Open Virtualization Format
Not only has virtualization advanced the state of the art in maximizing server efficiency, it has also opened the door to new technologies that were not possible before. One of these technologies is the virtual appliance, which fundamentally changes the way software is delivered, configured, and managed. But the power behind virtual appliances lies in the ability to freely share them among different hypervisors. Learn the ideas and benefits behind virtual appliances, and discover a standard solution for virtual appliance interoperability called the Open Virtualization Format.
Also available in: Portuguese  
20 Oct 2009
Linux virtualization and PCI passthrough
Processors have evolved to improve performance for virtualized environments, but what about I/O aspects? Discover one such I/O performance enhancement called device (or PCI) passthrough. This innovation improves performance of PCI devices using hardware support from Intel (VT-d) or AMD (IOMMU).
Also available in: Japanese   Portuguese   Spanish  
13 Oct 2009
Create an ooRexx build environment on Linux KVM
Construct an on-demand software build service using ooRexx that uses the Linux Kernel Virtual Machine (KVM) for better performance. KVM acts as the host for the guest operating systems that build the target software for the user. The Apache Web server controls the builds and stores the results for later retrieval by the user. Learn how to set up the build server and create guests, customize build requests, and organize and access build results.
Also available in: Japanese  
14 Jul 2009
IBM Lotus Domino, Linux, virtualization, scalability: No longer mutually exclusive terms
Tired of having to force fit IBM® Lotus® Domino® into your infrastructure? With the latest release of 64-bit Lotus Domino on Linux® and virtualization, you now can implement large-scale enterprise environments with Lotus Domino on Linux in a single footprint. This article documents the benchmarks that have been done and the results of early adopters of this solution, showing you how your infrastructure can fit and grow with Lotus Domino.
Also available in: Chinese   Spanish  
29 Jun 2009
Migrate to a virtual Linux environment with Clonezilla
Learn how to use the open source Clonezilla Live cloning software to convert your physical server to a virtual one. Specifically, see how to perform a physical-to-virtual system migration using an image-based method.
Also available in: Russian   Japanese   Portuguese   Spanish  
21 Apr 2009
Cloud computing with Linux
Cloud computing and storage convert physical resources (like processors and storage) into scalable and shareable resources over the Internet (computing and storage "as a service"). Although not a new concept, virtualization makes this much more scalable and efficient through the sharing of physical systems through server virtualization. Cloud computing gives users access to massive computing and storage resources without their having to know where those resources are or how they're configured. As you might expect, Linux plays a huge role. Discover cloud computing, and learn why there's a penguin behind that silver lining. [And see the new Resource links to the latest developerWorks content on cloud computing. -Ed]
Also available in: Russian   Japanese   Portuguese  
11 Feb 2009
Secure Linux containers cookbook
Lightweight containers, otherwise known as Virtual Private Servers (VPS) or Jails, are often thought of as a security tools designed to confine untrusted applications or users. However, as presently constructed, these containers do not provide adequate security guarantees. By strengthening these containers using SELinux or Smack policy, a much more secure container can be implemented in Linux. This article shows you how to create a more secure Linux-Security-Modules-protected container. Both the SELinux and Smack policy are considered works in progress, to be improved upon with help from their respective communities.
Also available in: Russian   Japanese  
03 Feb 2009
POWER5 Virtualization: How to work with VLANs using the IBM Virtual I/O Server
Learn how to improve security between logical networks. In this article, Nigel Griffiths describes the benefits of working with VLANs using the IBM Virtual I/O Server (VIO Server).
Also available in: Russian  
18 Nov 2008
Deliver high availability with a Xen virtual server
Get step-by-step details to implement Xen virtual server high availability via the IBM System Director Virtual Availability Manager. The Virtual Availability Manager is included in the IBM System Director Virtualization Manager package, an extension for IBM Director. In this article, the authors walk you through all the steps, from prerequisites and setup to troubleshooting -- everything you need to get started delivering virtual high availability capabilities.
Also available in: Russian  
01 Oct 2008
Anatomy of real-time Linux architectures
It's not that Linux isn't fast or efficient, but in some cases fast just isn't good enough. What's needed instead is the ability to deterministically meet scheduling deadlines with specific tolerances. Discover the various real-time Linux alternatives and how they achieve real time -- from the early architectures that mimic virtualization solutions to the options available today in the standard 2.6 kernel.
Also available in: Russian   Japanese   Portuguese  
15 Apr 2008
Configuring SUSE Linux on POWER5 to maximize performance
IBM POWER5(TM) and POWER5+(TM) systems provide excellent virtualization capabilities. Understand factors affecting virtualization performance of IBM POWER5 systems using SUSE Linux(R) Enterprise Server (SLES) 10. Learn how to use system tools that can help diagnose and solve performance problems. See examples of how to test for and improve performance.
Also available in: Russian  
26 Apr 2007
Use the Integrated Virtualization Manager with Linux on POWER
The IBM Integrated Virtualization Manager (IVM) is a new component of the Virtual I/O Server, which is included with the Advanced Power Virtualization feature. With the use of IVM, customers can now manage partitions on an IBM POWER5 server without a Hardware Management Console (HMC). This paper presents an overview of the functionality of IVM, lists some of the differences between the IVM and the HMC, and illustrates how to use IVM to create and manage Linux on POWER partitions.
Also available in: Chinese  
15 Nov 2005
Overview of Linux on IBM eServer i5, p5 and Linux-only
IBM's commitment to Linux spans the entire IBM eServer product line. This article gives developers an overview of Linux on POWER5 processor-based servers. It also introduces the IBM Virtualization Engine technology and describe how Linux users will benefit from it.
01 Mar 2005
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