Phil ESGUERRA ([log in to unmask]) wrote: : : Does anyone know the shelf life of the 4MM DAT tapes? How long : can I keep them under the most ideal conditions and still be : readable after that time period? : The User's manual for the DDS-2 drive says tapes are good for 10 years. One full pass thru a drive once a year is recommended to prevent sticking. Storage conditions don't seem to be a major factor (room temperature, moderate humidity). James Overman HP STC Roseville