Data center server virtualization

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  • abend (abnormal end)

    An abend (a combining of two words, abnormal end, when operator messages were as short as possible) is an abnormal, rather than planned, end or termination of a computer program because of some problem with how it is running. 

  • data center

    A data center (sometimes spelled datacenter) is a centralized repository, either physical or virtual, for the storage, management, and dissemination of data and information organized around a particular body of knowledge or pertaining to a particular... 

  • unified computing system (UCS)

    A unified computing system (UCS) is a data center architecture that integrates computing, networking and storage resources to increase efficiency and enable centralized management. 

  • server sprawl

    Server sprawl is a situation in which multiple, under-utilized servers take up more space and consume more resources than can be justified by their workload. 

  • P/390

    The P/390 is basically an IBM mainframe system adapted to run on a personal computer. 

  • sysplex and Parallel Sysplex

    A sysplex is IBM's systems complex (the word sysplex comes from the first part of the word system and the last part of the word complex), introduced in 1990 as a platform for the MVS/ESA operating system for IBM mainframe servers. 

  • crossbar latch

    A crossbar latch, also called a molecular crossbar latch, is a nanoscale device with properties similar to those of a conventional silicon transistor, but physically much smaller, having a diameter of approximately 2 nanometers (nm, where 1 nm = 10-9... 

  • MVS (Multiple Virtual Storage)

    MVS (Multiple Virtual Storage) is IBM's best-known operating system for mainframe and large server computers. 

  • When is Hyper-V the right choice?

    Is Microsoft's Hyper-V mature enough for larger data centers, or is VMware a better choice? 

  • VMware vLockstep update

    VMware's upcoming high-availability feature, vLockstep, helps prevent downtime by creating a "ghost" virtual machine that contains replicated memory and apps. Virtualization expert David Davis explains. 

  • Virtualization for test labs

    A virtualization expert explains how virtualized environments can be cost-effective alternatives in creating test labs in this video from Data Center Decisions 2008. 

About Data center server virtualization

Our comparisons of server virtualization platforms, including VMware, Microsoft Hyper-V, as well as open source and Linux virtualization options, can help you find the best virtualization technologies for your IT department's needs. Our experts advise on migrating to virtualized servers from a physical environment and selecting virtualization tools. They share techniques for simplifying server management and data center performance monitoring with virtualization. Other topics include reducing IT costs by consolidating with virtualization; using virtualization's energy-efficiency benefits as part a green data center strategy; reaping advantages of virtualization in data center disaster recovery planning; and more.