Glossary

See AVIO

The cluster member where the package starts after it fails over.

Auto Port Aggregation. An HP-UX software product that creates link aggregates, often called “trunks,” which provide a logical grouping of two or more physical ports into a single “fat pipe”. This port arrangement provides more data bandwidth and higher reliability than would otherwise be available.

A collection of processes that perform a specific function. In the context of virtual machine clusters, an application is any software running on the guest.

A cluster configuration in which the cluster nodes do not have access to the same physical storage and network devices.

A characteristic of a virtual machine whereby it is set to start whenever Integrity VM starts. Virtual machines can be set to either auto or manual boot using the -b option to the hpvmcreate, hpvmmodify, hpvmmigrate, or hpvmclone commands.

Processors, memory, and I/O resources that are not assigned to a virtual machine. These resources are available to be used in new partitions or can be added to existing partitions.

Accelerated Virtual Input/Output. An I/O protocol that improves virtual I/O performance for network and storage devices used within the Integrity VM environment. The protocol also enables support for a greater number of virtual I/O devices per guest. Special drivers are required on both the VM host and guests. Participating guests must include a virtual I/O device configured to use the AVIO protocol.

The physical device on the VM Host that is allocated to guests, such as a network adapter, disk, or file.

Baseboard Management Controller. The Management Processor (MP) console for Intel® Itanium systems.

To load a virtual machine's operating system and start it. Once a virtual machine has been configured with an operating system, it is considered a guest, and is started automatically when Integrity VM starts, or manually using the hpvmstart command.

A special-purpose user account created on the VM Host for each guest administrator or operator.

Two or more systems configured together to host workloads. Users are unaware that more than one system is hosting the workload.

A cluster node that is actively participating in the Serviceguard cluster.

A system (VM Host or guest) configured to be a part of a Serviceguard cluster.

A pNIC or storage unit that is dedicated to a specific virtual machine. A dedicated device cannot be used by multiple virtual machines.

Guests that has been configured as a Serviceguard package.

Extensible Firmware Interface. The boot firmware for all HP Integrity systems.

The amount of a system resource (for example, a processor) that is guaranteed to a virtual machine. The actual allocation of resources to the virtual machine can be greater or less than its entitlement, depending on the virtual machine's demand for processor resources and the overall system processor load.

Information about system events. An event log indicates what event has occurred, when and where it happened, and its severity (alert level). Event logs do not rely on normal I/O operation.

The operation that takes place when a primary service (network, storage, or CPU) fails, and the application continues operation on a secondary unit. In the case of Serviceguard virtual machines, the virtual machine can fail over to another cluster member. In case of a network failure, on a properly configured system the virtual machine can fail over to another LAN on the same cluster node.

The virtual machine running the guest OS and guest applications.

The administrator of a virtual machine. A guest administrator can operate the virtual machine using the hpvmconsole command with action that can affect the specific guest only.

A software application that runs on a guest.

A guest application that has been configured as a Serviceguard package.

The virtual machine console that is started by the hpvmconsole command.

Software that is provided with Integrity VM that you install on the guest to ensure the guest is manageable by Integrity VM and other components of the Virtual Server Environment and HP Integrity Virtual Machines Manager.

The administrator of the guest OS. This level of privilege gives complete control of the virtual machine but does not allow control of the other guests, the VM Host, or the backing stores.

Guest operating system.

A Serviceguard package that is an Integrity VM guest.

The system administrator. This level of privilege provides control of the VM Host system and its resources, as well as creating and managing guests.

The name of a system or partition that is running an OS instance.

The operating system that is running on the host machine.

The HP-UX Ignite server product. Used as a core build image to create or reload HP-UX servers.

The HP Integrity Virtual Machines product, which allows you to install and run multiple systems (virtual machines) on the same physical host system.

HP Instant Support Enterprise Edition. A secure remote support platform for business servers and storage devices.

A virtual switch created by default when Integrity VM is installed on a VM Host. The local network created by this vswitch can be used for communications among guests but not for communication between the VM Host and any guest or between any external system and a VM guest.

The operation of stopping a Serviceguard package on one cluster member and then starting it on another cluster member. Migrating the package (for example, a virtual machine), can be useful in system management procedures and workload balancing.

A Serviceguard cluster consisting of VM Host systems.

Network Interface Card. Also called “network adapter.”

No single point of failure. A configuration imperative that implies the use of redundancy and high availability to ensure that the failure of a single component does not impact the operations of the machine.

A script that is customized for each virtual machine Serviceguard package and that contains specific variables and parameters, including logical volume definitions, for that virtual machine.

A script containing parameters that controll how Serviceguard operates.

Platform Manager. See VM Host.

Physical network interface card.

The cluster member on which a failed-over package was originally running.

A method of providing high availability that uses mltiple copies of storage or network units to ensure services are always available (for example, disk mirroring).

A physical device that can be accessed only by the VM Host system. For example, the VM Host boot device should be a restricted device.

Serviceguard allows you to create high-availability clusters of HP 9000 or HP Integrity servers. Serviceguard can be used to manage virtual machines as Serviceguard packages. A Serviceguard package groups application services (individual HP-UX processes) together and maintains them on multiple nodes in the cluster, making them available for failover.

Serviceguard extension for real application clusters.

Serviceguard extension for SAP.

A virtual device that can be used by more than one virtual machine.

To start a virtual machine that has been booted before.

A file, DVD, disk, or logical volume on the VM Host that is used by the virtual machines running on the VM Host.

A cluster configuration in which the nodes share access to the same storage and network devices.

The virtualized console of a virtual machine that emulates the functionality of the Management Processor interface for HP Integrity servers. Each virtual machine has its own virtual console from which the virtual machine can be powered on or off and booted or shut down, and from which the guest OS can be selected.

An emulation of a physical device. This emulation, used as a device by a virtual machine, effectively maps a virtual device to an entity (for example, s a DVD) on the VM Host.

Virtual hardware system. Also called VM.

The executable program on the VM Host that manifests the individual virtual machine. The program communicates with the loadable drivers based on information in the guest-specific configuration file, and it instantiates the virtual machine.

The user-mode application that provides console emulation for virtual machines. Each instance of the virtual machine console represents one console session for its associated virtual machine.

The management application responsible for managing and configuring HP Integrity Virtual Machines.

Migration of a virtual machine from one VM Host system to another by using the Integrity VM command hpvmmigrate. Do not use this command for virtual machine packages.

A virtual machine that is configured as a Serviceguard package.

A LAN that is shared by the virtual machines running on the same VM Host or in the same Serviceguard cluster.

See Virtual machine.

The virtual machine host system.

Virtual network interface card (NIC). The network interface that is accessed by guest applications.

Virtual switch. A component in the guest virtual network. By associating the vswitch with a physical working LAN on the VM Host, you provide the guest with the capability of communicating outside the localnet.

Web-Based Enterprise Management. A set of Web-based information services standards developed by the Distributed Management Task Force, Inc. A WBEM provider offers access to a resource. WBEM clients send requests to providers to get information about and access to the registered resources.

The collection of processes in a virtual machine.