Ibm Data Cartridges 4MM Data Cartridges • Network tape backup solution, providing fast access and high capacity • The Helical Scan process involves Read-after-Write and error detection technology • DDS drives will write a frame of data, immediately read it back, compare this information with the original data, check for inaccuracies and make any necessary corrections • 4MM technology competes directly against DLT and 8MM for the same network backup market Advantages • The companies involved in the DDS technology will ensure that the DDS format will continue to provide fast, reliable storage on a platform that allows a typical server to store an entire backup on a single tape cartridge • DDS tapes from one manufacturer will continue to read and write DDS cartridges from another manufacturer • Small hardware footprint, with enormous tape capacity DDS 1 90M, 2-4GB