CD Vs. DVD Storage Capacity
CDs and DVDs both are used for digital data storage, but a DVD is always used for larger files such as videos. There are a few ways to store data on CDs and DVDs, blank copies of which can be purchased at electronics stores.
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CD-R
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The disc with the least amount of storage space is the CD-R, which can hold 700 MB, or approximately 80 minutes of audio.
CD-RW
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A CD-RW has the same storage capacity as a CD-R, but data can be removed and replaced, unlike the CD-R which can only be burned once.
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DVD-R
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DVDs can hold significantly more data than CDs. DVD-Rs hold approximately 4.7 GB of data. And unlike CD-Rs, DVD-Rs can burn videos that can be watched directly on any DVD playing device.
DVD-RW
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A DVD-RW has the same storage capacity as a DVD-R, but its benefit is that it can be recorded multiple times. These discs are the best choice for people who use DVD video recorders with their TVs.
Double Layer
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Double layer discs available for blank CDs and DVDs offer twice the usual storage capacities.
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