"Write-Once" refers to a type of data storage technology that allows information to be written to a medium only once. After the initial writing, the data cannot be modified or deleted. This feature is commonly used in archival storage, ensuring that important information remains unchanged over time. An example of a Write-Once medium is a CD-R (Compact Disc Recordable), where users can burn data onto the disc, but cannot alter it afterward. This makes Write-Once technology ideal for preserving records, legal documents, and other critical data that must remain intact and unaltered.