Abstract: A system and method of autonomously navigating an autonomous robot is described. The described method involves creating a topological mapping of an area of environment around a location of the mobile robot; identifying at least one pathway around the location; and locally constraining a motion of the mobile robot based on the topological mapping and the identified at least pathway. The method expects inaccuracies in the localization to happen within an acceptable range and mitigates these errors by locally constraining the motion of the robot or vehicle to what is defined safe upon an analysis of data perceived through one or more robot sensors.

Abstract: An redundant array of independent disks (RAID) is provided. The RAID comprises a plurality of storage devices. Each storage device has a plurality of storage blocks in stripes, which comprises stripes of data blocks and continuous stripes of blank blocks. The data blocks are suitable for storing data, and the blank blocks are reserved. The blank blocks of each storage device are disposed at the same location for providing a continuous buffer space. The RAID can prevent the original data loss in conversion and assure of the completeness of the data.