Technology

First Hard Drive in the world

| Did you know?

tumblr_mhnldgsWjF1qcdm3lo3_r1_400The First Hard Drive in the world is just have 5 MB capacity. It was called the IBM 350 Disk Storage Unit. It was revealed to the world on September 4, 1956.

The size of this machine is really big, compared to the size of Hard Drive in present. The IBM 350 Disk Storage Unit weighed about one ton and required special shipping and handling. The IBM 350 Disk Storage Unit had 24″ diameter disks and could only store about five megs of data, about the size an average MP3 file.

Specifications:

IBM 305 RAMAC (Random Access Method of Accounting and Control) 1956

  1. Capacity: 4.8 MB
  2. Rotational speed: 1,200 rpm
  3. Rent: $ 3,200 per month (1957)
  4. Business users first: Chrysler’s Mopar Division (1957)
  5. The number of units that have been produced: Over 1000 units by year 1961
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