Storage management and analytics Definitions

  • O

    open source cloud storage

    Open source cloud storage is a cloud storage architecture that uses freely available source code to build and manage a private cloud storage platform.

  • open source storage

    Open source storage is data storage software developed in a public, collaborative manner that permits the free use, distribution and modification of the source code.

  • orthogonal

    Orthogonal concepts have their roots in advanced mathematics. They are also associated with software development, storage and networking.

  • P

    persistent storage

    Persistent storage is any data storage device that retains throughout instances of lost power.

  • petabyte (PB)

    A petabyte is a unit of data storage space consisting of 1,024 terabytes, or approximately 1 million gigabytes. The prefix 'peta' refers to the fifth power of 1,000.

  • pipeline burst cache

    A pipeline burst cache is a cache or storage area for a computer processor that is designed to be read from or written to in a pipelining succession of four data transfers (or bursts) in which later bursts can start to flow or transfer before the first burst has arrived at the processor.

  • portability

    Portability is a characteristic attributed to a computer program if it can be used in an operating systems other than the one in which it was created without requiring major rework.

  • production data

    Production data is data that is persistently stored and essential to completing day-to-day business tasks and processes.

  • protected mode

    Protected mode is a mode of program operation in a computer with an Intel-based microprocessor in which the program is restricted to addressing a specific contiguous area of 640 kilobytes.

  • Q

    Quiz: Data Storage

    Computer storage is the holding of data in an electromagnetic form for access by a computer processor.

  • R

    RADOS (Reliable Autonomic Distributed Object Store)

    Reliable Autonomic Distributed Object Store (RADOS) is an object storage service with the ability to scale to thousands of hardware devices by making use of management software that runs on each of the individual nodes. RADOS is an integral part of the Ceph distributed storage system.

  • RADOS Block Device (RBD)

    A RADOS Block Device (RBD) is software that facilitates the storage of block-based data in the open source Ceph distributed storage system.

  • RAM (random access memory)

    Random access memory is where the operating system, application programs and data in current use are kept in a computing device for quick access by the processor.

  • RDRAM (Rambus DRAM)

    Rambus Dynamic Random Access Memory, or RDRAM (Rambus DRAM), is a type of computer device active memory developed and licensed by Rambus Inc.

  • read cache

    A read cache is a computer storage component that temporarily keeps a copy of data from a slower permanent storage location in order to accelerate the fulfillment of future requests for the data.