Using a read-write data storage device having a dual actuator

Abstract

A method of aligning read elements and write elements with a storage media in a data storage device includes determining a position of a data track associated with the storage media, shifting one of a first and second head module relative to the storage media. The first head module includes at least one of a read element and a write element and the second head module includes at least one of a read element and a write element operatively associated with the at least one of the read element and write element of the first head module. The first head module is selectively shiftable relative to the second head module. The method further includes aligning one of the at least one read element and write element of the one of the first and second head module that is shifted with the data track on the storage media.

1 . A method of aligning read elements and write elements with a storage media in a data storage device, the method comprising:
 determining a position of a data track associated with the storage media;   shifting one of a first and second head module relative to the storage media, the first head module including at least one read element and at least one write element and the second head module including at least one read element and at least one write element operatively associated with corresponding ones of the at least one of the read element and at least one write element of the first head module, the first head module being selectively shiftable relative to the second head module; and   aligning one of the at least one read element and at least one write element of the one of the first and second head modules with the data track on the storage media.   
     
     
         2 . The method of  claim 1 , wherein shifting one of a first and second head module relative to the storage media comprises a first-stage shift and a second-stage shift, the first-stage shift facilitating a first amount of movement and the second-stage shift facilitating a send amount of movement, the second amount of movement being less than the first amount of movement. 
     
     
         3 . The method of  claim 1 , wherein shifting one of a first and second head module relative to the storage media comprises activating at least one first-stage actuator element operatively coupled to the one of the first and second head modules. 
     
     
         4 . The method of  claim 3 , wherein activating at least one first-stage actuator element comprises activating a first first-stage actuator element operatively coupled to the first head module and a second first-stage actuator element operatively coupled to the second head module. 
     
     
         5 . The method of  claim 3 , wherein activating at least one first-stage actuator element comprises activating a voice coil operatively coupled to at least one of the first and second head modules. 
     
     
         6 . The method of  claim 3 , wherein shifting one of a first and second head module relative to the storage media comprises activating at least one second-stage actuator element operatively coupled to the one of the first and second head modules. 
     
     
         7 . The method of  claim 6 , wherein activating at least one second-stage actuator element comprises activating a first second-stage actuator element operatively coupled to the first head module and a second second-stage actuator element operatively coupled to the second head module. 
     
     
         8 . The method of  claim 6 , wherein activating at least one second-stage actuator element comprises activating a piezo operatively coupled to at least one of the first and second head modules. 
     
     
         9 . The method of  claim 1 , further comprising: shifting a third head module relative to one of the first and second head modules.