A storage apparatus and method configured to improve efficiency of data access utilizing dynamically adjusting storage zone boundary within a disk are disclosed. A process capable of implementing the flexible zone boundary, in one example, allocates a first zone of a first disk operable to store data. While the first zone can be referred to as a Redundant Array of Independent Disks 0 (“RAID 0”) zone, the implementation of RAID 0 can be carried out in the first zone. Upon allocating a second zone of the first disk operable to store secured data, the process allocates a third zone of the first disk wherein the storage boundary of the first zone can be dynamically expanded into the third zone in response to the availability of free storage capacity of the first zone of the first disk.