Dynamic storage hierarchy management

摘要

A data block may be moved between a first medium and a second medium. The movement of the data block involves measuring the access characteristic of the data block as the data block is stored on the first medium. The performance characteristics of the first medium and the second medium are then determined, in which each performance characteristic has a static performance characteristic component and a dynamic performance characteristic component. Alternatively or concurrently, the static performance characteristic components of the first medium and the second medium may be compared, and the dynamic performance characteristic components of the first medium and the second medium are compared. Accordingly, the data block is moved from the first medium to the second medium when at least one of these comparisons indicate that the second medium is more suitable for storing the data block having the access characteristic than the first medium.

主权项

1. A computer-implemented method, comprising:
measuring an access characteristic for a data block that is stored in a first medium; determining a corresponding performance characteristic for each of the first medium and a second medium, each performance characteristic including a static performance characteristic component and a dynamic performance characteristic component; and moving the data block from the first medium to the second medium when at least one of a first comparison of the static performance characteristic components of the first medium and the second medium or a second comparison of the dynamic performance characteristic components of the first medium and the second medium indicates that the second medium is more suitable for storing the data block having the access characteristic than the first medium, the static performance characteristic component of the performance characteristic for the first medium or the second medium includes a static-access-per second recommendation and the dynamic performance characteristic component of the performance characteristic for the first medium or the second medium includes a dynamic access-per-second recommendation.