Specifying the Default Density for a Tape Drive

Normally, you specify a tape drive by its logical unit number, which can run from 0 to n. The table below describes how to specify tape device names using default density settings.

By default, the drive writes at its "preferred" density, which is usually the highest density it supports. If you do not specify a tape device, the command writes to drive number 0 at the default density the device supports.