Introduction into Disc Types

Depending on the data storage mechanism all discs can be divided into the following groups:

• Magnetic discs include aluminum discs (used for early radio recordings), floppy disks (devices using a flexible disc), hard disk drives (non-volatile magnetic data storage devices), gramophone records.
• RAM discs are volatile solid state drives.
• Long-playing records, or vinyl discs, are analog records, which served as a primary release format for recorded music, until the compact disc began to significantly displace them in the 1980s.
• Optical discs include CD, DVD, Blu-ray etc. The detailed description of these optical disc types you can find in the Appendix section.