Replica Disk for Data Storage

A disk for storing information, comprising:

• a surface including tracks comprising lands and pits, wherein the surface corresponds to a recording layer of the disk, wherein the tracks have a track pitch that is less than 375 nm, wherein the pits have a pit depth, and wherein the pit depth ranges from 55 nm to 110 nm.

A disk for storing information, comprising:

• a surface including tracks comprising lands and pits, wherein the surface corresponds to a recording layer of the disk, wherein the tracks have a track pitch that is less than 375 nm, wherein the pits have a pit depth, and wherein the pit depth ranges from 64 nm to 91 nm.

A disk for storing information, comprising:

• a surface including tracks comprising lands and pits, wherein the surface corresponds to a recording layer of the disk, wherein the tracks have a track pitch that is less than 375 nm, wherein the pits have a pit depth, wherein the pit depth ranges from 55 nm to 110 nm, wherein the lands have a land width, and wherein the land width ranges from between 25 percent of the track pitch and 140 nm.