3.3.1 Modes of storage

There are three main ways in which media digital content can stored

  • online,
  • offline or
  • nearline.

3.3.1.1 Online storage

Online storage uses networked storage devices where content is available for immediate access through a network. Email is included in this category.

3.3.1.2 Offline storage

Offline storage uses storage devices and media that are not immediately available for access through a network. Examples include portable and removable magnetic disks, optical discs (CD and DVD), magnetic tape and USB flash drives. Offline records may be stored offsite, for example to reduce storage costs or as part of a disaster recovery plan. Human intervention is required to make these records accessible. There may be administrative procedures to access records in offline storage, particularly if they are stored offsite.

 

3.3.1.3 Nearline storage

Nearline storage uses removable storage media that remains relatively accessible through automated processes such as robotic data storage devices, for example CD jukebox or tape silo. Records in nearline storage can be accessible in a short time without requiring a human to retrieve media from storage.