Weighing in at more than a ton and storing 5MB of data, the IBM 305 RAMAC was the first supercomputer with a hard disk drive (HDD). Introduced by IBM on September 13, 1956, RAMAC stood for “random ...
Moving the head takes a lot longer than waiting for the sector to come around. So low seek times (the time to move the head) are critical to good disk performance. Access time (time to find a sector) ...
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