RAMAC actuator and disk stack

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  • Details
  • Description
Date Introduced
1956
Photographer
Richards, Mark
Dimensions
overall: 54 in x 40 in x 30 in
Manufacturer
IBM Corporation
Copyright Owner
© Mark Richards
Location
US
Keywords
hard disk; Accounting; Business
Object ID
L2009.1.1
Speed
0.6 s
Memory Type
Magnetic Disk
Memory Size
4.4 MB
Memory Width
6-bit + parity
Cost
$3,200/mo or $45,000

This is the heart of the world’s first disk drive. It has 50 24” disks spinning at 1,200 RPM holding 5 million characters of information.