This 20/40GB DLT Internal SCSI Tape Drive assures additional data integrity through Error Correction Code (ECC), Cyclical Redundancy Check (CRC) and SCSI bus parity checking. Featuring 20GB native capacity; up to 40GB with hardware controlled data compression this drive also has dual channel Read/Write for improved performance. DLT IV media can be reformatted to 35/70GB or 40/80GB capacities for use in other DLT drives for greater investment protection and growth. Simply install inside a 3503BOX for a cost-effective, flexible external solution. For rack systems, install inside the NetMedia Storage Expansion Unit EL which can accommodate up to 2 DLT drives.