Run retension operations for tape cartridges

This topic explains the importance of retention times for tape cartridges.

For older tape cartridge types, the quarter-inch tape units run a retension operation whenever a tape cartridge is loaded. Retension means that the tape unit moves the tape to the end-of-tape position and rewinds it to the beginning-of-tape position. The retension operation is part of the load sequence. The tape unit also runs a retension operation if a tape cartridge is in the tape unit when the door is closed.

When using MLR3-25GB, DC5010, MLR1-16GB, SLR100, and SLR60 tape cartridges, the tape units run the retension operation only when necessary (as determined by the tape unit) to maintain correct tape tension. The approximate retension times are as follows: