WORM (Write Once Read Many)

"Write Once Read Many" times is a type of computer storagemedia that can be written to once, but read from multiple times.There are two types of WORM storage media: those thatphysically can be written only once, such as CD-R and DVD-Rand media that enables WORM capability by using electronickeys or other measures to prevent rewriting.

An acronym for Write Once Read Many times, a class of optical recording systems that allow recording and adding data but not altering recorded data

storage media are used for archival and secure data: usually refers to optical disk, but also to StorageTek's VolSafe tapes.

Data storage devices (e.g. CD-ROMs) where the space on the discs can only be written once. The data is permanently stored. This is often todays primary media for archival information. Common disc sizes run from 5.25 (1.3 gigabytes) to 12 (8 to 10 gigabytes) capacities. There is also a 14 disc (13 to 15 gigabytes), only manufactured by Kodaks optical storage group. WORMs can also be configured into jukeboxes. There are various technologies. The expected viable lifetime of a WORM is at least 50 years.

A technology to write data onto a storage medium and which does not permit changes