History of hard disk drives

September 4, 1959 the world was introduced by IBM 350 Disk Storage Unit – the first hard drive. It was an incredibly expensive machine, similar to the cabinet height 1.7 m, width 1.5 m, 0.74 m thick, which weighed about 1 ton. On its spindle has 50 disks (one disk size – 61 cm) coated with a special paint and containing a ferromagnetic material. Disk rotation speed was 1200 rpm, and the amount of stored information – 4.4 MB.

IBM 350 Disk Storage Unit

IBM 350 Disk Storage Unit

In 1979, one of the developers of IBM created his company Seagate Technology, and from that moment began the history of hard drives as a mass product. The company took the issue of hard drives, which first volume was 5 MB, 10 MB and then. Competitor Seagate Technology at that time was the company Western Digital, which is engaged in production of single-chip controllers.

In the 70s began attempts to create based on the dynamic memory hard drives (SSD). It was costly invention, and only when the volume of RAM chips have increased, the cost of these drives has decreased. Development was carried out, and storage of solid towards creating electrically rewritable ROM memory (EEPROM).

In 1989, Toshiba has developed the concept of flash memory NAND. In the same year the Israeli company M-Systems has created a drive on a single chip DiskOnChip, she later release the first USB-flash drive.

It was only in 2006, the company Samsung has released the first laptop with a SSD-drive, the volume of which was 32 ​​GB.