Archiving Definitions

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  • A

    asynchronous replication

    Asynchronous replication is an approach to data backup in which data is written to primary storage and then replicated to a replication target.

  • B

    backup

    Defining what backup is, and the tools and policies to manage it in organizations, comprise a key foundational principle for IT administrators.

  • backup storage device

    A data storage device for backup makes copies of data actively in use. Should the storage medium fail, the original data is recovered from copies on the backup hardware.

  • C

    centralized backup

    Centralized backup is a process that involves automatically replicating data from remote sites and sending it over a network to a main (centralized) location for storage.

  • cold backup (offline backup)

    Cold backups are ideal for disaster recovery because they protect important data. But the process requires downtime, so it should be conducted during quiet periods.

  • D

    dark backup

    A dark backup is one that can be run automatically without manual intervention.

  • data archiving

    Data archiving migrates infrequently used data to low-cost, high-capacity archive storage for long-term retention.

  • data retention policy

    A data retention policy dictates the types of data to be retained and the duration for which that data must be stored in accordance with operational or regulatory requirements.

  • differential backup

    A differential backup is a type of backup that copies all the data that has changed since the last full backup.

  • DLT (digital linear tape)

    Before the popular Linear Tape-Open Consortium came into existence, Quantum had its proprietary digital linear tape (DLT) format. Learn more about DLT technology here.

  • G

    ghost imaging

    Ghost imaging, often called cloning, is a software-driven data backup process that copies the contents of a computer hard disk in a single compressed file or set of files, referred to as an image.

  • H

    hot backup (dynamic backup)

    Hot data backups are the standard for most database backups, as users can stay online while they are performed. But the technology has risks, such as a performance impact.

  • I

    incremental backup

    An incremental backup decreases the time and storage space required to create a backup by only backing up the data created or modified since the previous backup.

  • L

    LAN-free backup

    LAN-free backup is the process of backing up server data to a centralized storage device rather than moving it across a local-area network (LAN).

  • N

    near-continuous data protection (near CDP)

    Near-continuous data protection, sometimes called near-continuous protection, is a general term for backup and recovery products that take snapshots at set intervals. The term evolved from a need to differentiate products that take snapshots on a pre-determined schedule (every fifteen minutes, for example) from those products that take snapshots each time new data is written (true CDP).

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