First 5MB disk
This is what the first 5 MB hard drive looked like 50 years ago. It was impossible to lift it without a forklift:
The disc was released by IBM in September 1956. The hardware was intended for the first SUPER computer with a 305 RAMAC hard drive.
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The system weighed about a ton - it turns out to be 0.2 grams per byte (or 5 kilobytes per kilogram) and consisted of 50 disks with a diameter of 24 inches (610 mm). Each disk, respectively, 100 kilobytes. The frequency of rotation of the drum - 1200 revolutions per minute. Random access time - 600 milliseconds.
Promotional video of those times:
In the video, around 1: 20-1: 30 minutes as well as 3: 45-4: 00, they talk about inline documents & online documents, and this is when no one has heard of the Internet. It was hard times, literally.
Related links: many.at/ibm-305-ramac-5-mb
The disc was released by IBM in September 1956. The hardware was intended for the first SUPER computer with a 305 RAMAC hard drive.
')
The system weighed about a ton - it turns out to be 0.2 grams per byte (or 5 kilobytes per kilogram) and consisted of 50 disks with a diameter of 24 inches (610 mm). Each disk, respectively, 100 kilobytes. The frequency of rotation of the drum - 1200 revolutions per minute. Random access time - 600 milliseconds.
Promotional video of those times:
In the video, around 1: 20-1: 30 minutes as well as 3: 45-4: 00, they talk about inline documents & online documents, and this is when no one has heard of the Internet. It was hard times, literally.
Related links: many.at/ibm-305-ramac-5-mb
Source: https://habr.com/ru/post/135347/
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