Statements (51)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
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
|
| https://www.w3.org/2000/01/rdf-schema#label |
HDD (older models)
|
| 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:Mac_Mini
|
| gptkbp:bfsLayer |
6
|