|
gptkbp:instanceOf
|
gptkb:data_storage_device
|
|
gptkbp:capacity
|
5 MB to several GB
|
|
gptkbp:commonIn
|
personal computers
mainframe computers
|
|
gptkbp:component
|
read/write head
actuator arm
spindle motor
spinning disk platter
|
|
gptkbp:coolingRequirement
|
often required
|
|
gptkbp:cost
|
expensive per MB
|
|
gptkbp:dataRate
|
lower than modern HDDs
|
|
gptkbp:dataRecovery
|
difficult
|
|
gptkbp:dataSource
|
random access
|
|
gptkbp:density
|
lower than modern drives
|
|
gptkbp:developedBy
|
gptkb:IBM
|
|
gptkbp:encodes
|
gptkb:MFM
FM
RLL
|
|
gptkbp:formFactor
|
3.5-inch
5.25-inch
8-inch
|
|
gptkbp:fullName
|
gptkb:Hard_Disk_Drive
|
|
gptkbp:interface
|
gptkb:SCSI
gptkb:IDE
gptkb:ST-506
|
|
gptkbp:introducedIn
|
1956
|
|
gptkbp:lifespan
|
shorter than modern drives
|
|
gptkbp:maintenance
|
required regular servicing
|
|
gptkbp:notableModel
|
IBM 350
Seagate ST-506
Winchester drive
|
|
gptkbp:removableMedia
|
rare
|
|
gptkbp:replacedBy
|
solid-state drives (SSD)
modern HDDs
|
|
gptkbp:requires
|
gptkb:battery
controller card
|
|
gptkbp:rotationPeriod
|
2400 RPM
3600 RPM
1200 RPM
|
|
gptkbp:status
|
obsolete
|
|
gptkbp:usedIn
|
workstations
minicomputers
early servers
|
|
gptkbp:uses
|
magnetic storage
|
|
gptkbp:volume
|
high
|
|
gptkbp:vulnerableTo
|
magnetic fields
mechanical failure
|
|
gptkbp:weight
|
heavy compared to modern drives
|
|
gptkbp:bfsParent
|
gptkb:Apple_iMac
gptkb:Mac_Mini
|
|
gptkbp:bfsLayer
|
7
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
HDD (older models)
|