Disk pack

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Disk pack is a layered grouping of hard disk platters (circular, rigid discs coated with a magnetic data storage surface). Disk pack is the core component of a hard disk drive. In modern hard disks, the disk pack is permanently sealed inside the drive. In early hard disks, the disk pack was a removable unit, and would be supplied with a protective canister featuring a lifting handle. Examples of a hard disks with removable disk packs are the IBM 1311, and the Digital RP04.

See also disk cartridge, history of hard disk