A disk drive system including one or more platters, each platter supporting at
least one recording surface, where the platters are aligned about a common central
axis. The platters spin about the common central axis. A recording head is associated
with each recording surface. An actuator mechanism couples to each recording head
to move the recording head into proximity with selected portions of the recording
surface in response to received commands. At least two replicates of data are stored
in at least two data storage areas such that any one of the at least two replicates
can be accessed to service a data access request.