To avoid confusion, set aside groups of disks for recording classified data at
each security level. Mark each disk or diskette with stick-on labels
identifying the overall security classification and permanently assigned
identification numbers. When you declassify and degauss disks, remove all
external labels indicating the classification unless you immediately use the
disks to store information of the same classification level.
Figure 8-1 shows how the different levels of classification should be clearly
marked on the exterior labels of disks.
Figure 8-1.Classification markings clearly
marked on disk labels.
Magnetic media, such as disks, eventually wear out or become damaged. If
disks contain classified material, degauss or erase them before destruction.
Handle and dispose of printer ribbons and carbon papers used to
print/transfer classified information according to the highest classification
level of the data printed by that ribbon or carbon. Follow the requirements
and instructions outlined in the Department of the Navy, Information and
Personnel Security Program Regulation, OPNAVINST 5510.1.