IBM Integrated Virtualization Manager

IVM provides an interface to many of the POWER5 and POWER5+ partitioning and virtualization features that today require an HMC. The HMC can be cost prohibitive for a smaller to mid-sized business, or a larger business with a distributed environment (i.e. a bank with many branch locations), looking to consolidate their workloads onto a POWER5 processor-based server. Because the HMC supports the full range of POWER5 functionality, the interface is complex, requiring an in-depth knowledge of IBM’s implementation of partitioning and virtualization. IVM provides the only available interface to manage virtualization and partitioning on the BladeCenter JS21, since an HMC is not supported on that platform.

IVM bridges these gaps by providing a tightly integrated and easy to use management environment at no additional charge with the purchase of one of the optional APV features.

           IBM Integrated Virtualization Manager   Lowering the cost of entry into Advanced POWER Virtualization       Updated July 25, 2006     Erin Burke Virtualization Offering Manager eburke@us.ibm.com IBM Systems and Technology Group  Amartey Pearson IVM Development Team apearson@us.ibm.com IBM Systems and Technology Group  Craig Wilcox IVM Development Team wilcoxc@us.ibm.com IBM Systems and Technology Group   Untitled Documentsp5IVMwp072506.doc  Page 2     Table of Contents  Executive Overview........................................................................................................3 Integrated Virtualization Manager...................................................................................4 Introduction.................................................................................................................4 Features and Benefits ..................................................................................................4 What s New in IVM? ..................................................................................................4 Support for BladeCenter JS21..................................................................................4 Dynamic Logical Partitioning..................................................................................4 Security Enhancements............................................................................................4 Usability Enhancements ..........................................................................................5 Integrated Virtualization Manager and the Hardware Management Console ................5 Target Market..............................................................................................................6 Advanced POWER Virtualization - the Basis for IVM....................................................7 Utilize Server Resources - Virtualize and Consolidate.................................................7 Integrated Virtualization Manager in Depth.....................................................................8 Design.........................................................................................................................8 Resource Utilization....................................................................................................9 User Interfaces ............................................................................................................9 Usability....................................................................................................................10 A simple view of processing..................................................................................10 Tight virtual I/O integration...................................................................................11 Serviceability ............................................................................................................12 Features Specific to the HMC....................................................................................12 Deployment Examples ..................................................................................................12 Consolidating Web Application Servers ....................................................................13 Deploying Test and Development Systems................................................................13 Appendix I: IVM and HMC Comparison at a Glance ...................................................15 Appendix II: System Requirements ..............................................................................16 Supported Systems:...................................................................................................16 Required Firmware Level:.........................................................................................16 Minimum Supported Client Operating Systems:........................................................16  Untitled Documentsp5IVMwp072506.doc  Page 3Executive Overview In today's dynamic marketplace, small and medium businesses are continually striving to adapt and respond to rapidly shifting IT requirements coupled with tight budget constraints. Simplifying the IT infrastructure is very important to business executives and IT professionals alike.  To help address these issues, IBM created the Integrated Virtualization Manager (IVM). The IVM is an easy-to-use, browser-based tool which literally allows clients to point, click and consolidate multiple workloads onto one IBM System p5" or other supported server.  The IVM, coupled with the power of System p5 and the IBM BladeCenter JS21, offers small and medium business the opportunity to:  "    Simplify IT management by enabling computer resources to look and perform as one "    Increase business flexibility, allowing your organization to meet both anticipated and unanticipated spikes in server demand with shared capacity "    Save time and money, helping clients get the most out of their IT investment In addition to the benefits mentioned above, IVM offers a lower cost of entry into virtualization on IBM POWER5" and POWER5+" processor-based servers, since it does not require the use of a hardware management console (HMC) for managing logical partitions (LPARs) on a single system. With IVM, clients can partition a single system by creating LPARs and provide for management of virtual storage and virtual Ethernet. Best of all, IVM is included at no additional charge with the optional purchase of Advanced POWER" Virtualization (APV) on IBM System p5 Express and entry IBM eServer" p5 servers or the POWER Hypervisor and Virtual I/O Server (VIOS) feature on IBM eServer OpenPower" servers. IVM is also available on the BladeCenter JS21 blade. IVM is packaged in the Virtual I/O Server (VIOS) software.  Untitled Documentsp5IVMwp072506.doc  Page 4Integrated Virtualization Manager Introduction IVM provides an interface to many of the POWER5 and POWER5+ partitioning and virtualization features that today require an HMC. The HMC can be cost prohibitive for a smaller to mid-sized business, or a larger business with a distributed environment (i.e. a bank with many branch locations), looking to consolidate their workloads onto a POWER5 processor-based server. Because the HMC supports the full range of POWER5 functionality, the interface is complex, requiring an in-depth knowledge of IBM s implementation of partitioning and virtualization. IVM provides the only available interface to manage virtualization and partitioning on the BladeCenter JS21, since an HMC is not supported on that platform.  IVM bridges these gaps by providing a tightly integrated and easy to use management environment at no additional charge with the purchase of one of the optional APV features. Features and Benefits The Integrated Virtualization Manager provides an intuitive, browser-based system management interface that is used to manage a single System p5, eServer p5, BladeCenter JS21, or OpenPower server without an HMC. Clients can create logical partitions, manage virtual storage and virtual Ethernet, and view service information related to the server.  IVM may be used to complete the following tasks:  "    Create and manage logical partitions "    Configure the virtual Ethernet networks "    Manage storage in the Virtual I/O Server "    Create and manage user accounts "    Create and manage serviceable events through Service Focal Point "    Download and install updates to device microcode and to Virtual I/O Server software "    Back up and restore logical partition configuration information "    View application logs and the device inventory . What s New in IVM? Since the initial release of the Integrated Virtualization Manager, a number of functional and usability enhancements have been made, with many more planned for the future. Support for BladeCenter JS21 The BladeCenter JS21 is the first Blade system with support for IBM s logical partitions. The Integrated Virtualization Manager provides the partition management capabilities for the JS21. The Hardware Management Console (HMC) is not an option in this environment as there is no service processor. Dynamic Logical Partitioning Dynamic LPAR of processing and memory resources is supported for all client partitions. This allows all processing and memory resources to be modified dynamically on a partition, without restarting the partition. Security Enhancements The Virtual I/O Server has added a number of security enhancements which allow the user greater control over their VIOS environment. These enhancements include: 1.   The VIOS now ships with OpenSSH pre-installed. This allows secure (encrypted) shell access to the VIOS, and by extension to the consoles of client partitions. Untitled Documentsp5IVMwp072506.doc  Page 52.   A firewall can now be configured on the VIOS using ipsec filtering through a new, easy to use command viosecure. This command also allows the user to set various security hardening rules. Usability Enhancements A number of usability enhancements were added to the IVM Web user interface. These enhancements include: 1.   Partition Shutdown: The partition shutdown options are more intuitive and accessible via a single shutdown option. A new Operating System Shutdown option has been added which issues the shutdown command on the client operating system, thereby allowing a normal shutdown. 2.   Create Based On: A new task allows the user to create a new partition based on an existing partition. All partition attributes, including the size and location of virtual disks are copied to the new partition. The data on the virtual disks is not copied. 3.   Hyperlink Properties: The properties for all objects can now be easily accessed with one click on the object name. 4.   Task Management: The status and messages for the last 40 tasks run from the web user interface can be accessed in the new Task Management section. 5.   IVM Network Configuration: A Web user interface option has been added allowing the user to modify the network configuration of the virtual I/O server.  Integrated Virtualization Manager and the Hardware Management Console The Integrated Virtualization Manager is not a replacement for the HMC in all environments. Rather, it is a targeted offering for clients requiring a simplified user interface and basic virtualization features. Throughout this paper we will discuss the differences between the HMC and IVM. The major difference to keep in mind is that an HMC is the ideal choice for a high availability environment since it allows for a fully redundant configuration.  Because the IVM and HMC both provide management capabilities, they may not be used in conjunction with one another to manage the same server. Additionally, Partition Load Manager, a software offering for managing workloads among LPARs running the AIX 5L" operating system, is not supported on a server in IVM-managed mode.  Untitled Documentsp5IVMwp072506.doc  Page 6  Fig 1: APV management offerings. Note: The HMC may not be used with the BladeCenter JS21  Target Market The Integrated Virtualization Manager is an ideal solution for: "    Smaller to mid-sized businesses looking to consolidate existing workloads onto one or two supported servers "    Businesses with a geographically distributed IT infrastructure which would otherwise require a HMC for each location "    Businesses wishing to employ virtualization on a BladeCenter JS21  Because the IVM contains a subset of features and functionality provided by the HMC (highlighted at the end of this section), clients should consider the type of workload they intend to run on their server. For example, the HMC is the preferred solution for those whose primary concern is high availability. Environments for which high availability is a primary concern are advised to employ a fully redundant configuration, including two or more Virtual I/O Server partitions. Since only one VIOS instance is supported on a system managed by IVM, it is not recommended for high availability environments where HACMP" is not an option. SP SP SP Browser Manufacturing Default Configuration IVM-managed HMC-managed  rvi   rBrowser SP =Untitled Documentsp5IVMwp072506.doc  Page 7 Advanced POWER Virtualization - the Basis for IVM  The Integrated Virtualization Manager is integrated into the Virtual I/O Server (VIOS), which is part of the APV hardware feature (POWER Hypervisor and Virtual I/O option on OpenPower servers). IVM is not separately orderable and can only be purchased as part of APV. On the BladeCenter JS21, Advanced POWER Virtualization is enabled through the order and installation of VIOS software. VIOS is a single-function appliance that resides in a POWER5 or BladeCenter JS21 partition and facilitates the sharing of physical I/O resources for client partitions (AIX 5L or Linux ) within the server). VIOS provides virtual SCSI, virtual optical, and Shared Ethernet Adapter support to the client partitions, which enables a client partition to run with no physical I/O devices.  The APV hardware feature available with IVM includes: "    Micro-Partitioning" support for a single processor to be shared by up to 10 logical partitions. "    Virtual I/O Server (VIOS) V1.2.1 (and later) o    Virtual SCSI (VSCSI): Enables the sharing of physical storage adapters (SCSI and Fibre Channel) and storage devices (disk and optical) between logical partitions. o    Virtual networking: A Shared Ethernet Adapter provides connectivity between internal and external Virtual LANs (VLANs); Virtual Ethernet provides high-speed connections between partitions. o    Integrated Virtualization Manager  Utilize Server Resources - Virtualize and Consolidate Many servers today serve one distinct application environment, such as a Web server or database. Each application environment is implemented on its own physical hardware, which includes the server, router, and storage. This process requires dedicated hardware for each application, which may result in low hardware utilization. There is an understandable desire to consolidate these redundant resources and get the maximum utilization possible.  The Integrated Virtualization Manager makes consolidation easy. "    With full Micro-Partitioning support, it provides default settings that are designed to automatically optimize processor usage by taking full advantage of the POWER Hypervisor or BladeCenter JS21 shared processing pool. "    Virtual Ethernet support allows logical partitions that don t consistently use the full network bandwidth to share a physical adapter. For those workloads which require additional bandwidth, it also allows for aggregation of two or more physical adapters into one virtual adapter. "    Virtual SCSI and optical support allows for finer-grained storage assignment, which allows assignment of physical disks, partial disks, or external LUNs to hosted logical partitions. It is no longer necessary to assign an entire physical SCSI adapter or host bus adapter (HBA) to a logical partition. This capability is particularly useful on smaller systems that are limited to one or two physical SCSI adapters or host bus adapters. Untitled Documentsp5IVMwp072506.doc  Page 8 Integrated Virtualization Manager in Depth Design The POWER5 processor-based server line offers three types of partition management mode, depending on the client s environment and requirements. 1.   Manufacturing Default Configuration: In this management mode, there is a single partition which owns all of the resources on the system. The client may install one operating system on the server. The Advanced Systems Management Interface (ASMI) can be used for basic management tasks, such as powering on and off the system. 2.   HMC-managed:  In this mode, a Hardware Management Console is used to manage one or more servers. All management tasks can be done directly from the HMC, including partitioning the system. All system events and state information is forwarded to the HMC. When an HMC connects to a system in the Manufacturing Default Configuration mode, it will transition automatically to an HMC-managed system. Note that HMC management is not supported on the BladeCenter JS21. 3.   IVM-managed: This mode is a hybrid of the first two modes. When the Virtual I/O Server is installed as the operating system on a system in Manufacturing Default Configuration mode, the system will automatically transition to be IVM-managed. The VIOS partition owns all of the physical I/O resources; however, it will only own a portion of the memory and processing resources. Client partitions can be created using the IVM interface. Processing and memory resources are assigned directly by the Hypervisor to these client partitions; however, all I/O is virtualized through the VIOS. Please note that Partition Load Manager is not supported in IVM-managed mode. Additionally, the IVM managed mode is the only method available for enabling virtualization on the BladeCenter JS21.  Creating and managing partitions requires an interface through which to communicate with the POWER Hypervisor. The HMC accomplishes this via the Service Processor which routes the messages up to the Hypervisor. Because the IVM is running directly on the system, a new virtual device called the Virtual Management Channel (VMC) was created to enable communication between the IVM and the Hypervisor. This device is available only on System p5, eServer p5, BladeCenter JS21, and OpenPower servers that are in IVM-managed mode, and is assigned only to the VIOS partition.  Because the IVM is running within a partition, there are certain management functions that the user must still use ASMI to perform, such as powering on and powering down the system.     Untitled Documentsp5IVMwp072506.doc  Page 9 Fig 2: IVM high-level design  Resource Utilization Because the Integrated Virtualization Manager is running inside of a partition, it consumes processing and memory resources. To minimize this impact, the IVM was architected to minimize resource consumption in the following ways: "    The IVM interface is stateless. When not being actively used by the user for configuration, it is mostly dormant. With the exception of a daemon that collects processor utilization statistics (and can be disabled by the user), no polling or data collection is performed except when explicitly retrieved by the user. "    The command line interface, while sharing a similar syntax to the HMC s command line, was rewritten by IBM in C++ to help ensure optimal performance specifically for the IVM. "    The Web server, which is running in the VIOS partition, has been optimized for a small memory footprint. User Interfaces The IVM provides both a browser-based graphical interface and a command line interface. "    The graphical interface provides an intuitive, easy to use method to configure and manage the system. Because it is browser-based, the only client requirement is a computer with a Web browser which has network access to the VIOS partition. This Web interface is built on top of the command line interface and provides access to all commonly used partitioning, virtual I/O, and service commands. "    The command line interface has a similar syntax to the HMC command line interface. It requires an interactive console, telnet or ssh session be established with the VIOS partition. There are three types of commands available: o    Partition Management: These provide all partitioning function such as creating and modifying partitions. These items are part of the IVM specific command set, and are only available when the system is in IVM-managed mode. o    Virtual I/O: These features provide the virtual I/O provisioning functions such as creating and assigning virtual disks and shared Ethernet adapters. Most of these  POWER5 Hypervisor VMC LPAR CLIVIOS CLI I/O SubsystemCommand Shell Web Server Telnet / SSH Web Browser Untitled Documentsp5IVMwp072506.doc  Page 10commands exist on the VIOS outside of the IVM environment (i.e. when the system is being managed by an HMC). o    Service and maintenance: These provide the service functions, such as user management, serviceable event management, and firmware/microcode management. With the exception of serviceable event management, these commands also exist on the VIOS outside of the IVM environment.  Access to the console of managed partitions is provided through the VIOS command line using the mkvt and rmvt commands. Usability POWER5 processor-based servers offer unparalleled virtualization capabilities, which until now only advanced system administrators have been able to optimally configure and leverage. The IVM was designed with ease of use as a primary objective. With the usability improvements in the IVM, POWER5 virtualization is now accessible to a much broader audience. And, IVM enables leading-edge virtualization capability on the BladeCenter JS21.  The browser-based interface was designed by IBM and influenced by user-centered design experience and feedback. Some examples of these usability improvements are listed below. A simple view of processing Understanding all of the configuration settings for Micro-Partitioning technology can be quite a daunting task. There are four different settings required to successfully set up Micro-Partitioning technology: Processing Units, Virtual Processors, Capped/Uncapped, and Uncapped Weight. If one of these settings is wrong, the partition will likely still function, but the performance and utilization of the system will probably not be optimal.  The IVM simplified these settings down to one simple assignment - the number of processors. Reasonable defaults are chosen for all other values depending on the number of processors selected. These settings provide good defaults to all but the most advanced users. Those users who need more control can still tweak all the settings by later viewing and modifying the detailed partition properties.  Untitled Documentsp5IVMwp072506.doc  Page 11  Fig 3: Selecting the number of processors while creating a new partition in IVM Tight virtual I/O integration While the partition configuration can be thought of as separate from the virtual Ethernet and virtual storage assigned to a partition from an architectural perspective, this view makes little sense from a client s perspective. With that in mind, the virtual I/O configuration is tightly coupled with the partition configuration. A prime example of this is the creation and assignment of a virtual disk.  To create and assign a virtual disk in an HMC-managed environment, a user must: 1.   Dynamically add a virtual SCSI Server adapter on the VIOS partition using the HMC and add the virtual SCSI Server adapter to the current partition profile for the VIOS. 2.   Create a virtual SCSI Client adapter on the client partition using the HMC, making sure that the client points to the server adapter. 3.   Create the virtual disk (logical volume) using the VIOS command line. The volume group and disk size must be included as command line parameters. 4.   Map the virtual disk to the virtual SCSI Server adapter using the VIOS command line. This feature requires the user to manually determine the virtual SCSI Server adapter name on the VIOS.  To do the same thing in the IVM environment, a user must: 1.   Select the size for the virtual disk. 2.   Select the partition to which to assign the virtual disk. If they are creating the disk in the Create Partition wizard, then this step isn t needed.   Untitled Documentsp5IVMwp072506.doc  Page 12  Fig 4: Creating a virtual disk while creating a partition in the IVM  Serviceability The IVM provides a subset of the service function that is available on an HMC. It acts as a repository and provides a management interface for Serviceable Events, and for system and service processor dumps. It also provides backup/restore capabilities for both the partition configuration and the Virtual I/O Server itself, as well as device microcode and system firmware updates.  Customers requiring the full set of service functions available on System p (for example concurrent system firmware updates and call-home support), should choose the HMC.  Features Specific to the HMC Customers should carefully review their unique environment requirements when deciding whether to deploy the Integrated Virtualization Manager or the Hardware Management Console. Highlighted below are some specific items which can help users to make this decision.  "    Advanced Service Function: The Hardware Management Console supports advanced service function such as call-home support and concurrent maintenance. IVM supports concurrent maintenance for adapters owned by the VIOS. "    High Availability: In an environment where high availability is required, IBM recommends that the client employ a fully redundant environment. One method of doing this is to create two or more VIOS partitions on the system. Since IVM allows for a single instance of VIOS, IVM is not recommended for HA.  Deployment Examples  Untitled Documentsp5IVMwp072506.doc  Page 13The Integrated Virtualization Manager is designed for users who would like to deploy logical partitions without a Hardware Management Console. Below are a few usage scenarios which could be deployed using the IVM.  Consolidating Web Application Servers  A client has a number of Web application servers which are currently underutilized and would like to consolidate them onto a single system. Using IVM, the user is able to quickly deploy a POWER5 processor-based server or BladeCenter JS21 with four micro-partitions with uncapped processors: three Web application servers and a new test server. Using the default LPAR configuration settings from the IVM: "    Each deployed LPAR is on a single virtual LAN which is bridged to the external Ethernet switch using the Shared Ethernet Adapter support in the VIOS. This support allows each LPAR to operate as though plugged directly into the external Ethernet switch. "    Each partition loads from a virtual disk which is backed by the default storage pool in the VIOS. These disks can be extended as capacity needs change. "    Each partition is given shared processor allocations, which maximize the ability of the POWER Hypervisor to perform fine-grained allocation of processor resources to each LPAR. "    Each partition is given a user-defined amount of memory.      Fig 5: Web application server consolidation  Deploying Test and Development Systems  The Integrated Virtualization Manager is also a great solution for development and test environments. It is often difficult to procure dedicated hardware for development and test environments, which often have low to average utilization rates. Since the IVM introduces simplified deployment of cost-effective micro-partitions, it is easy to deploy independent test and development partitions in minutes using the same virtualization for processing, memory, network, and storage (see figure below). Since the resources are virtualized, creating a new partition on an existing partitioned server is simply a matter of helping to ensure that remaining capacity is available for the new workload.   VIOS + IVM  POWER Hypervisor Ethernet SwitchrUntitled Documentsp5IVMwp072506.doc  Page 14 Fig 6: Test and deployment system consolidation  VIOS + IVM  POWER Hypervisor Ethernet SwitchrUntitled Documentsp5IVMwp072506.doc  Page 15Appendix I: IVM and HMC Comparison at a Glance   Integrated Virtualization Manager (IVM) Hardware Management Console (HMC) Physical footprint Integrated into the server A desktop or rack-mounted appliance Installation Installed with the VIOS (optical or network). Preinstall option available on some systems. Appliance is preinstalled. Reinstall via optical media or network is supported. Managed operating systems supported AIX 5L and Linux AIX 5L, Linux and i5/OS Virtual console support AIX 5L and Linux virtual console support AIX 5L, Linux and i5/OS virtual console support User security Password authentication with support for either full or ready only authorities Password authentication with granular control of task based authorities and object based authorities Network security -Firewall support via command line -Web server SSL support -Integrated firewall -SSL support for clients and for communications with managed systems Servers supported System p5 505 and 505Q Express System p5 510 and 510Q Express System p5 520 and 520Q Express System p5 550 and 550Q Express System p5 560Q Express eServer p5 510 and 510 Express eServer p5 520 and 520 Express eServer p5 550 and 550 ExpressOpenPower 710 and 720 BladeCenter JS21 All POWER5 and POWER5+ processor-based servers:    System p5 and System p5 Express   eServer p5 and eServer p5 Express   OpenPower   eServer i5 Multiple system support One IVM per server One HMC can manage multiple servers Redundancy One IVM per server Multiple HMCs can manage the same system for HMC redundancy Maximum number of partitions supported Firmware maximum Firmware maximum Uncapped partition support Yes Yes Dynamic Resource Movement (dynamic LPAR)   System p5 BladeCenter JS21 Processing    Yes Yes Memory Yes No  Yes - full support I/O Support for AIX 5L and Linux Virtual optical, disk, Ethernet, and console Virtual and Direct I/O Support for i5/OS None Virtual and Direct Maximum # of virtual LANs Four 4096 Fix/Update process for Manager VIOS fixes and updates HMC e-fixes and release updates Adapter microcode updates Inventory scout Inventory scout Firmware updates VIOS firmware update tools (not concurrent) Service Focal Point with concurrent firmware updates I/O Concurrent Maintenance VIOS support for slot and device level concurrent maintenance via the diag hot plug support Guided support in the "Repair and Verify" function on the HMC. Untitled Documentsp5IVMwp072506.doc  Page 16Scripting and Automation VIOS command line interface (CLI) and HMC compatible CLI HMC command line interface Capacity on Demand No Support Full Support User Interface Web browser (no local graphical display) WebSM (local or remote) Workload Management (WLM) Groups Supported One 254 LPAR Configuration Data Backup and Restore Yes Yes Support for multiple profiles per partition No Yes Serviceable event management Service Focal Point Light - Consolidated management of firmware and management partition detected errors Service Focal Point support for consolidated management of operating system and firmware detected errors Hypervisor and service processor dump support Dump collection with support to do manual dump downloads Dump collection and call home support Remote support No remote support connectivity Full remote support for the HMC and connectivity for firmware remote support   Appendix II: System Requirements Supported Systems: System p5 505 and 505Q Express, System p5 510 and 510Q Express, System p5 520 and 520Q Express, System p5 550 and 550Q Express, System p5 560Q Express, eServer p5 510 and 510 Express, eServer p5 520 and 520 Express, eServer p5 550 and 550 Express, OpenPower 710 and 720, BladeCenter JS21 Required Firmware Level: SF235 or later (not applicable to BladeCenter JS21) Minimum Supported Client Operating Systems: AIX 5L V5.3 or later SUSE Linux Enterprise Server 9 for POWER (SLES 9) or later Red Hat Enterprise Linux AS 3 for POWER, Update 2 (RHEL AS 3) or later Untitled Documentsp5IVMwp072506.doc  Page 17           IBM Corporation 2006  IBM Corporation Marketing Communications Systems and Technology Group Route 100 Somers, New York 10589  Produced in the United States of America July 2006 All Rights Reserved  This document was developed for products and/or services offered in the United States. IBM may not offer the products, features, or services discussed in this document in other countries.  The information may be subject to change without notice. Consult your local IBM business contact for information on the products, features and services available in your area.  All statements regarding IBM s future directions and intent are subject to change or withdrawal without notice and represent goals and objectives only.  IBM, the IBM logo, AIX 5L, BladeCenter, eServer, i5/OS, Micro-Partitioning, OpenPower, POWER, POWER5, POWER5+, System p5 are trademarks or registered trademarks of International Business Machines Corporation in the United States or other countries or both. A full list of U.S. trademarks owned by IBM may be found at http://www.ibm.com/legal/copytrade.shtml.  Linux is a registered trademark of Linus Torvalds in the United States, other countries or both.  Other company, product, and service names may be trademarks or service marks of others. Information concerning non-IBM products was obtained from the suppliers of these products or other public sources. Questions on the capabilities of the non-IBM products should be addressed with the suppliers. All performance information was determined in a controlled environment. Actual results may vary. Performance information is provided AS IS and no warranties or guarantees are expressed or implied by IBM. The IBM home page on the Internet can be found at http://www.ibm.com. The System p page on the Internet can be found at http://www.ibm.com/systems/p. The eServer OpenPower home page may be found at http://www.ibm.com/linux/power/openpower.