{"id":4395,"date":"2012-04-24T12:23:25","date_gmt":"2012-04-24T12:23:25","guid":{"rendered":"https:\/\/www.techopedia.com\/definition\/optical-drive\/"},"modified":"2021-07-22T21:53:00","modified_gmt":"2021-07-22T21:53:00","slug":"optical-drive","status":"publish","type":"definition","link":"https:\/\/www.techopedia.com\/definition\/5308\/optical-drive","title":{"rendered":"Optical Drive"},"content":{"rendered":"

What Does Optical Drive Mean?<\/span><\/h2>\n

An optical drive is an internal or external computer disk drive that uses laser beam technology to read and write data.<\/p>\n

Optical disk drives are associated with compact discs, DVD<\/a> and Blue-Ray<\/a> technology. Like the floppy disk drives<\/a> of the last century, ODDs have fallen out of fashion and are no longer included as a default component of new desktop and laptop computers. It is possible to find external disk drives if you need to access information that is stored on a disk, but due to lessened demand in the market, they are increasingly difficult to source.<\/p>\n

Optical drives work by rotating the inserted disc at a constant speed, calculated in revolutions per minute (RPM). The rotating disc in an optical drive is read with a laser beam using a lens embedded within the optical drive\u2019s head. Optical drives mainly use an Advanced Technology Attachment (ATA<\/a>) bus or a Serial ATA (SATA<\/a>) bus, along with Small Computer System Interface (SCSI<\/a>) to send and receive data from a computer.<\/p>\n

An optical drive may also be referred to as an optical disc drive (ODD).<\/p>\n

Techopedia Explains Optical Drive<\/span><\/h2>\n

Some of the popularity and utility of disc drives has to do with their capacity for data storage and the less intrusive build, compared to hard disk and floppy disk drives. Users particularly liked the ability to download (rip) songs from one CD and save them on another CD.<\/p>\n

Optical Disk Drive Obsolescence<\/span><\/h2>\n

When optical disc drives started to be commonly used in desktop and laptop computers, a disc could hold something like 650 MB, which at that time was more capacity than the average floppy disk.<\/p>\n

Over time, engineers were able to put several gigabytes onto a disk for DVD and Blu-ray purposes. However, the first trend to put a stumbling block in the way of using optical disc drives as media technology has to do with Moore’s law<\/a>.<\/p>\n

Advance of Flash Drives and Disc-Less Media<\/span><\/h2>\n

Moore’s law holds that the number of transistors on an integrated circuit can double annually. Over time, the realization of Moore\u2019s law led to much smaller storage devices that held ever larger amounts of data and flash storage<\/a> media began to replace optical storage media as the price of 16GB and 32GB and 64GB flash drives went down.<\/p>\n

Consumers became less willing to use optical discs when the same data could be stored on a flash drive<\/a> that had a significantly smaller form factor and did not require a dedicated drive with moving parts.<\/p>\n

The Cloud Revolution<\/span><\/h2>\n

Years later, cloud computing really took off. In the media world, that led to ubiquitous streaming video, where no physical media was necessary to access music, movies and everything else that used to be delivered on optical discs.<\/p>\n

The idea that it’s no longer necessary to hold data at the local device level is a large part of what is making optical drives obsolete. For example, smartphones have no such drives, but can still access music and movies and other digital media. Those changes eventually killed the ODD and the physical media that went along with it, making discs \u201clegacy media.”<\/p>\n","protected":false},"excerpt":{"rendered":"

What Does Optical Drive Mean? An optical drive is an internal or external computer disk drive that uses laser beam technology to read and write data. Optical disk drives are associated with compact discs, DVD and Blue-Ray technology. 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