Bernoulli Box

The Bernoulli Box (or simply Bernoulli, named after Daniel Bernoulli) was a high-capacity (for the time) removable disk storage system that was Iomega's first widely known product. It was released in 1983.

The drive spun a PET film disk at about 3000 rpm, 1 micron over a read-write head, utilizing Bernoulli's principle to pull the flexible disk towards the head as long as the disk was spinning. In theory this made the Bernoulli drive more reliable than a contemporary hard disk drive, since a head crash was impossible.

The original Bernoulli disks came in capacities of 5, 10, and 20 MB. They were roughly 21 cm by 27.5 cm.