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Sigma KEE - HardDiskDrive
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hard disk drive
The primary computer storage medium, which is made of one or more aluminum or glass platters, coated with a ferromagnetic material. Most hard disks are fixed disks, which are permanently sealed in the drive.
Relationships      
Parents computer component An instance of ComputerComponent is a piece of computer hardware that has measurable performance characteristics in terms of different units. Components include hard drives, the performance of which can be measured in terms of BitsPerSecond required to transfer data to and from the drive, network adapters, the performance of which can be measured by PacketsPerSecond units of data transfered to and from the adapter, and other common components like ComputerMemory and CentralProcessingUnit.
  digital data storage device An instance of DigitalDataStorageDevice is an ElectronicDataStorageDevice intended to be used for storing data (information) in some digital (discrete bit) encoding scheme designed for interpretation by computers.
  disk drive A device that can read and (often) write ComputerDisks.
Children cartridge hard disk driveA type of HardDiskDrive that can have different CartridgeHardDisks at different times. Insertion and removal of a disk are simple processes.
 external hard disk driveA type of HardDiskDrive that can be attached to a Computer by a cable.


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