P - Definitions

  • P

    packet writing

    Packet writing is a technology that enables the writing of data to a recordable compact disk (CD-R) incrementally, in multiple small blocks of data, rather than in a single block (as in disk-at-once recording), or in blocks defined by tracks (as in track-at-once recording), the other two common methods.

  • Panasas

    Panasas is a scale-out NAS (network-attached storage) vendor that produces hardware and software for demanding technical and enterprise environments.

  • parallel I/O

    Parallel I/O is a way of performing multiple input/output operations concurrently, rather than serially.

  • parity

    Parity is a method of detecting errors in data transmissions between computers, while parity bit and parity checking are used in RAID technology to guard against data loss.

  • partition

    Partitioning a hard disk drive is the first step in preparing it for data storage. A disk partition is a carved out logical space used to manage operating systems and files.

  • pay-as-you-grow pricing

    Vendors that offer a pay-as-you-grow storage allow customers with growing environments to acquire capacity after an array has been installed through the purchase of licenses.

  • 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.

  • phase change

    Phase change is a type of compact disk (CD) recording technology that enables the disks to be written, erased, and rewritten through the use of a layer of a special material (called the phase change layer) that can be changed repeatedly from an amorphous (formless) to a crystalline state, or phase-through exposure to variably-powered laser beams.

  • 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.

  • pixie dust or antiferromagnetically-coupled (AFC) media

    Pixie dust is the informal name that IBM is using for its antiferromagnetically-coupled (AFC) media technology, which can increase the data capacity of hard drives to up to four times the density possible with current drives.

  • PLEDM (phase-state low electron drive memory)

    PLEDM (phase-state low electron drive memory) is a new memory microchip technology that offers vastly greater capacity than memory devices commonly used in the past.

  • pNFS (Parallel NFS)

    The Parallel Network File System (pNFS) is part of the NFS v4.1 protocol that allows compute clients to access storage devices directly and in parallel.

  • point-in-time snapshot (PIT snapshot)

    Point-in-time snapshots are a method of data protection that allows an administrator to make a full copy of a volume so that a restore can occur based on a specific time.

  • 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.

-ADS BY GOOGLE

SearchSolidStateStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

Close