The Principle of Data Distribution over Physical Data Storage

Abstract

The article discusses the data storage system as a physical storage management system. Given that the data storage system is a multiuser system, it is assumed that uniform use of storage matrix cells, that is, data media is an important factor in improving storage performance. The article considers the necessity of distribution data across cells in such a way as to ensure the uniform use of physical storage media located at the same level of storage. As it is considered the multiuser system, the question is discussed about the time of user access to the storage matrix cells that should not exceed a given value. The efficiency criterion of the problem under consideration was defined. A data migration mechanism is proposed, in which the distribution of data over different media ensures uniformity of their use. The proposed mechanism for distributing data within a storage matrix is based on Bellman's principle of optimality. It is proposed to use an additional controller that implements such a migration mechanism.