In general, the invention is directed to servo techniques that utilize
servo patterns to facilitate head positioning relative to the data
tracks. For example, the servo techniques may include a first series of
servo patterns configured to allow calculation of a position error signal
that substantially mitigates error resulting from a variation in velocity
of the data storage tape during detection of the at least one of the
servo patterns in the first series. The servo techniques may also include
a second series of servo patterns interleaved within the first series of
servo patterns in order to encode data. The encoded data may include
linear position information. Embodiments may allow a data storage tape
meeting a currently accepted data storage tape specification, e.g., an
LTO Ultrium specification, to record data in a higher density than
currently implemented with the specification.