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DVD discs have much more capacity - 4.7 Gigabytes compared to a CD's 700 Megabytes. This means that each DVD can hold almost 7 CDs worth of stuff.
disk storage-> direct data access storage tape storage -> serial data access storage
The floppy disk which is commonly referred to as a high density floppy disk is a 3.5 inch disk. It has a storage capacity of 1.44 MB.
total disk space would be about 400 gb
1 Gb
The biggest disadvantage is that it has very little storage capacity. The maximum storage capacity of a (last generation) floppy disk is around 240 megabytes. A USB stick, CD, or DVD-ROM can all hold much more than this. Secondly, fewer and fewer computer termnials are being manufactured with floppy disk drives, since they have been replaced by other storage methods. This means it is hard to get your data off the disk. Thirdly, floppy disks are more easily corruptible than other methods of data storage.
100 gb.
1.4 MB
1.44 Megabytes
floppy disk
Summary of secondary storage media. Floppy disk, direct access and removeable.Use Slow Sequential Access Hard disk, high capacity and fastest direct access. Use Store Programs and Data CD-ROM High capacity and removable direct access. Use Entertainment Software, Reference Material Magnetic Tape, High capacity and inexpensive.Use Back-up Programs and Data.
data storage devices