Double Tape Recording Techniques (Data Security Mode, Performance Mode)
Original Publication Date: 2000-Mar-01
Included in the Prior Art Database: 2003-Jun-19
This article describes a new method for reading and writing data onto a tape. Target of this method is to approach the current requirements for using tapes as data storage. The method is based on a double tape cartridge (one cartridge with two independant tapes in it) in accordance with a double tape drive (a tape drive with two independant tape pathes in it). Using this technology it is possible to implement innovative recording modes. Tapes are historically seen the common media to store and archieve data. The requirements for tapes are as follows: Customers applications (especially HSM applications) need a high data rate to satisfy the users requirements. High data rates can only be achieved by fast tape motion and sophisticated recording technology. Compared to DASD tapes are considered to be cheaper. Also customers do not want to loose data. The more space the customer can store on a single tape the less room is needed for equipment. Also the overhead to manage the data is decreasing if more data fits on a single tape. Last not least the space requirements customers have to store the data is increasing.