Troika International provides :

A wide range of connectivity from 21 track drives to near-line running T9940. In one step, archive data can be provided for off-line, near- line and on-line access. The Troika range of software provides connectivity to all of these drives and also provides controllers for legacy drives with the necessary software for data transcription.

21 Track to SCSI 7 Track to SCSI STK/SCSI SCSI connectivity providing long block capability for relevant drives.