Which disk holds the most data DVD or CD-RW or Floppy or CD-R or CD-ROM?

Answer 1

DVD is the largest of the 'hard media' as:

1. DVD 4.7GB / 9.5Gb (dual layer)
2. CD 780 MB (largest currently available)
3. Floppy: 320KB / 512KB / 1.2MB (Magnetic Media)

Hard Disk's (Magnetic Media) have much larger sizes, currently the largest produced single drive is 2 TB (Terabyte: 2,000 Gigabyte - at the time of this answer). One 1 Terabyte drive equals 425.53 4.7 GB DVD's.

Please note that this does not include "Server" or "NAS" storage solutions that simply combine multiple drives into a single access point (Datacenter) - those are virtually unlimited in size (limited only by how much storage you can afford to add to the unit).

Currently the whole history of everything in all languages of the Human Race is estimated to be 50 Petabyte's; the largest (known) datacenter in the world is Teradata, Database 12 at 50 Petabytes. (1 Petabyte = 1,024 Terabytes == 1,048,676 Gigabytes or 212,765.96 DVD's).

India is starting a server farm in which there is supposed to be 1 googlebyte of storage possible which is a quintillion petabytes.

1 PB = 1024 TB

1TB = 1024 GB

1 GB = 1024 MB

1MB = 1024 KB

1 KB = 1024 Bytes

Answer 2

DVD - 4.7GB

CD-RW - 60MB

CD-R - 700MB

'Floppy' - unspecified. Typical PC floppy disk is 1.44MB, highest recorded capacity for a floppy disk variant is 200MB.

Out of the above, the DVD holds the most by far.

Answer 3

From least storage to greatest:

# floppy disk # CD-ROM # DVD-ROM # Hard Disk (note that these can vary in size, but are usually much larger than any of the others listed)