Labels:text | screenshot | parallel | font | line OCR: TAPE BACKUP ALTERNATIVES STOCK 2 Track 3 ČEŠKA Lineantape with Servo Figure 1. Helical scan and linear tape use different physion methods of storing data on the physical tape. Some systems add a servo track, which nids in aligning the read/write head, and thus compensates for mechanical wear or slight varintion between drive umits.