Hard drivesRECORD IBM350
IBM 350 Disk Storage Unit
First commercial random-access disk system · RAMAC · magnetic disk
ManufacturerIBM
Released1956
PlatformRAMAC · magnetic disk
What it is
A hard drive stores data on rotating media. Capacity, spindle speed, cache, recording method and workload influence access and transfer behavior.
This catalog record identifies the IBM 350 Disk Storage Unit as First commercial random-access disk system. The figures below are reference specifications and should be read with the linked manufacturer source and record notes.
Specifications
Indexed values| Storage capacity | 0.01 GB |
|---|
Source notes
Capacity is expressed as approximately 5 MB. This room-sized storage system predates personal computers and is included as the origin of the hard-disk lineage.
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