Patent ID: 7948701

Claim:
A patterned storage media, comprising: servo sectors that are patterned into discrete islands using self-assembly, the servo sectors comprising: an array of islands having hexagonal close packed (HCP) ordering; wherein the array of islands forms radial columns of islands, and after the islands in the array are written with a servo writing process, a repeating pattern is defined as: a first set of two radial columns with each of the two radial columns of the first set comprising islands having a first polarity, where the islands of one of the two radial columns is offset by a track from islands of the other of the two radial columns; and a second set of three radial columns with each of the three radial columns in the second set comprising islands having a second polarity opposite the first polarity; wherein consecutive instances of the first set of two radial columns are spaced in a track-wise direction by instances of the second set of three radial columns, and have islands that are shifted by one track with respect to islands of an adjacent first set of two radial columns.