INFORMATION PROCESSING APPARATUS, DATA MANAGEMENT METHOD, AND PROGRAM

摘要

A storage section stores segment information indicative of the correspondences between segments and keys. A control section divides, according to an increase in data which belongs to a segment, the segment into a plurality of segments and updates the segment information. In addition, the control section allows data that belongs to at least one of a plurality of second segments obtained by dividing a first segment once or by hierarchically dividing the first segment N (N>1) times, at the time of the N meeting a determined condition, to be moved from a storage device which stores data that belongs to the first segment to another storage device. The control section restricts the movement of data at the time of the N not meeting the determined condition.

主权项

1. An information processing apparatus used in an information processing system which divides a set of keys associated with data to be stored into a plurality of segments and which manages arrangement of the data in a plurality of storage devices on a segment basis, the information processing apparatus comprising:
a memory which stores segment information indicative of correspondences between the segments and the keys; and a processor which:
divides, according to an increase in data which belongs to a segment, the segment into a plurality of segments and updates the segment information; andallows data that belongs to at least one of a plurality of second segments obtained by dividing a first segment once or by hierarchically dividing the first segment N times, at the time of the N meeting a determined condition, to be moved from a first storage device which stores data that belongs to the first segment to a second storage device and restricts, at the time of the N not meeting the determined condition, movement of data that belongs to the plurality of second segments, the N being greater than 1.