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AMD's version of virtualization assist, included in some 64-bit AMD processors. See also Virtualization Assist.
- Browse Related Terms: AMD-V (AMD Virtualization), Hardware Virtualization Assist, Pacifica, Pacifica, AMD, SVM (Secure Virtual Machine), Vanderpool, Virtualization Assist, virtualization hardware assist, VT (Virtualization Technology), VT, Intel, x86 architecture
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- Browse Related Terms: application-level partitioning, cluster complete resource, Guest OS (Operating System), Host OS (Operating System), Hosted Virtualization, live backup, operating system partitioning, operating system virtualization, parent partition, Partition, partitioning, server virtualization, virtual machine, VSMP (virtual symmetric multiprocessing)
All > Technology > Virtualization
any computer program designed to perform a specific function directly for the user or for another application program Compare to operating system.
- Browse Related Terms: application program, domain, guest operating system, headless, Isolated, Native Execution, Native System, OS (operating system), Service Console, virtual machines
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One of the CPU schedulers provided by Xen. Atropos provides domains with absolute shares of the CPU, with timeliness guarantees and a mechanism for sharing out 'slack time'.
- Browse Related Terms: Atropos, BVT (Borrowed Virtual Time), CPU (Central Processing Unit), Hyper-Threading, hyperthreading, load balancing, logical processor, microkernel, Physical CPU, preemptive multitasking, simultaneous multithreading, SMP (Symmetric Multiprocessing), superthreading, time-slice multithreading, Virtualization Hardware Support
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a self-managing computing model which controls the functioning of computer applications and systems without input from administrators, hiding the system's complexity while maintaining efficiency and availability.
- Browse Related Terms: Autonomic Computing, business continuity, Capacity Planning, DR (Disaster Recovery), five nines, grid computing, HA (High Availability), Infrastructure, on-demand computing, policy-based automation, Provisioning, SLA (Service Level Agreement), Utility Computing, workload management
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The term bare-metal refers to the underlying physical architecture of a computer. Running an operating system on bare-metal is another way of referring to running an unmodified version of the operating system on the physical hardware. Examples of operating systems running on bare metal are dom0 or a natively installed operating system.
- Browse Related Terms: bare-metal, BT (Binary Translation), dom0, exokernel, full virtualization, hardware-independence, hypervisor, Kernel, kernel-based virtual machine, paravirtualization, partitioned, shadow pagetables, VMM (Virtual Machine Monitor), Xen
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installing a virtualization hypervisor as the first layer of software on a system, before any operating system. Compare to hosted environment.
A virtual environment where the virtualization product is directly installed on physical hardware, acting like a host OS. The opposite of hosted environment.
- Browse Related Terms: bare metal environment, clone, cloning, Cluster, hosted environment, P2V (Physical to Virtual) migration, V2P (Virtual to Physical) migration, V2V (Virtual to Virtual) migration, virtual appliance
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A process by which software components and layers are linked together. When a network component is installed, the binding relationships and dependencies for the components are established.
- Browse Related Terms: Binding, blade server, Host-Only Networking, LUN (Logical Unit Number), MAC Addresses, NAS (network-attached storage), NAT (Network Address Translation), network virtualization, RDM (Raw Device Mapping), remote memory, SAN (Storage Area Network), virtual hard disk, virtual machine configuration, virtual network, Virtual Network Manager, VMNIC (Virtual Machine Network Interface Card), VSwitch (Virtual Switch)
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A hot-pluggable motherboard, equipped with processors, memory and disks for use in a Blade Server.
See server blade.
- Browse Related Terms: Blade, compact, differencing virtual hard disk, dynamically expanding virtual hard disk, fixed-size virtual hard disk, Growable Disk, physical disk, Preallocated Disk, saved state, SRAT (System Resource Allocation Table), Thrashing, virtual disk, virtual floppy disk
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a rack-mounted chassis which accepts multiple modularized server blades and provides shared network and power resources, resulting in high server density in the rack.
An emerging modularized server configuration made by a standard rack featuring an embedded networking subsystem and several bays, where blades can be plugged while the system is turned on.
- Browse Related Terms: Binding, blade server, Host-Only Networking, LUN (Logical Unit Number), MAC Addresses, NAS (network-attached storage), NAT (Network Address Translation), network virtualization, RDM (Raw Device Mapping), remote memory, SAN (Storage Area Network), virtual hard disk, virtual machine configuration, virtual network, Virtual Network Manager, VMNIC (Virtual Machine Network Interface Card), VSwitch (Virtual Switch)
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Technique used by virtualization softwares to translate instruction set guest OSes send to virtual hardware in instruction set understandable by physical hardware. It's an alternative approach to paravirtualization.
- Browse Related Terms: bare-metal, BT (Binary Translation), dom0, exokernel, full virtualization, hardware-independence, hypervisor, Kernel, kernel-based virtual machine, paravirtualization, partitioned, shadow pagetables, VMM (Virtual Machine Monitor), Xen
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the requirement that a service must be available at all times or business operations will be impacted. Includes high- availability and disaster recovery.
- Browse Related Terms: Autonomic Computing, business continuity, Capacity Planning, DR (Disaster Recovery), five nines, grid computing, HA (High Availability), Infrastructure, on-demand computing, policy-based automation, Provisioning, SLA (Service Level Agreement), Utility Computing, workload management
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The BVT scheduler is used to give proportional fair shares of the CPU to domains.
- Browse Related Terms: Atropos, BVT (Borrowed Virtual Time), CPU (Central Processing Unit), Hyper-Threading, hyperthreading, load balancing, logical processor, microkernel, Physical CPU, preemptive multitasking, simultaneous multithreading, SMP (Symmetric Multiprocessing), superthreading, time-slice multithreading, Virtualization Hardware Support
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The operation of calculating how many resources a physical server will need for hosting a certain amount of virtual machines. It's a critical task to be achieved at very beginning of any virtualization project.
determining the resource requirements of a given set of business services to ensure that sufficient resources are made available before the services are implemented.
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describes a NUMA architecture in which the system ensures that data stored in processor caches is coherent across all nodes. Virtually all modern NUMA systems are cache coherent, so the term "ccNUMA" is considered redundant. See NUMA.
- Browse Related Terms: ccNUMA (cache coherent Non-Uniform Memory Access), HAL (Hardware Abstraction Layer), hardware virtualization, industry standard architecture, Intel architecture, Itanium, NetBSD/Xen, Node, NUMA (Non-Uniform Memory Access), SMP (Symmetric Multiprocessor), Uniprocessor (UP)
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A snapshot of a virtual machine that enables an administrator to roll the virtual machine back to its state at the moment the checkpoint was created.
- Browse Related Terms: Checkpoint, Clone, Full Clone, Independent Virtual Disk, key-value pair, Linked Clone, Snapshot, Template, virtual machine snapshot
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A copy of a virtual machine. See also Full Clone and Linked Clone.
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Virtualization permits creating running systems very fast. The conventional installation of operating systems and applications can take some time. With cloning, copies of a virtual machine can be created in a single installation and configuration process. Cloning simplifies and accelerate the distribution of standardized computing environments to employees or the creation of a base configuration for testing.
A duplicate of a Virtual Machine.
- Browse Related Terms: bare metal environment, clone, cloning, Cluster, hosted environment, P2V (Physical to Virtual) migration, V2P (Virtual to Physical) migration, V2V (Virtual to Virtual) migration, virtual appliance
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Server Group in a Virtual Environment
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A managed object that represents wither a single host or a cluster of hosts available for backing virtual machines.
- Browse Related Terms: application-level partitioning, cluster complete resource, Guest OS (Operating System), Host OS (Operating System), Hosted Virtualization, live backup, operating system partitioning, operating system virtualization, parent partition, Partition, partitioning, server virtualization, virtual machine, VSMP (virtual symmetric multiprocessing)