Which media type allows for permanent data writing?

LTO WORM (Write Once Read Many) tape is specifically designed for permanent data writing. It allows users to write data onto the tape once, after which the written data cannot be altered or deleted. This feature makes it particularly useful for applications where data integrity and compliance with regulations are paramount, such as in archiving and backup environments.

In contrast, the other options allow for data to be rewritten. For instance, both DVD-RW and CD-RW disks are erasable and can be rewritten multiple times, making them unsuitable for permanent data storage. LTO tape also enables multiple write and read cycles, meaning it does not provide the same permanence in terms of data integrity as WORM technology. Thus, for situations requiring data to remain unchanged after its initial writing, LTO WORM tape is the appropriate choice.