Block-level-data-based directional allocation method for hierarchical storage

Abstract

The invention provides a block-level-data-based directional allocation method for hierarchical storage. The method includes: establishing a data directional allocation architecture comprising a data block popularity judgment module, a data block directional allocation and migration module, and a hierarchical storage and organization module. The data block popularity judgment module is used for monitoring part of fixed-size block data in a volume and statistically analyzing data popularity so as to complete hierarchical management of the block data. The data block directional allocation and migration module is used for directionally allocating the data according to data popularity state and equipment features. The hierarchical storage and organization module is used for integrating the storage resources to form a storage resource pool capable of hierarchical storage. Compared to the prior art, the block-level-data-based directional allocation method for hierarchical storage allows hierarchical storage management to be more efficient and is highly practical and easy to popularize.

Description

technical field [0001] The invention relates to the field of intelligent data management, in particular to a directional distribution method based on block-level data in hierarchical storage. Background technique [0002] Hierarchical data storage is mainly based on the characteristic differences in the access performance of storage devices, and places data of different temperatures into matching storage devices, such as placing hot data on storage devices with better I / O performance, thereby improving storage system performance. overall access performance. The existing tiered storage devices consist mainly of combining solid-state disks and disks for storage, and rationally organizing storage devices with performance differences in the storage virtualization layer to form a unified storage resource pool. However, due to the asymmetrical I / O performance of the solid-state disk itself, and the erasure times of the flash memory particles in the solid-state disk are also limit...

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Problems solved by technology

However, due to the asymmetrical I / O performance of the solid-state disk itself, and the erasure times of the flash memory particles in the solid-state disk are also limited, if the data is simply and roughly allocated to the solid-state disk and disk in the hierarchical storage system , it is likely to increase the access delay of the system, which not only makes it difficult to take advantage of the performance advantages of solid-state disks, but also reduces the service life of solid-state disks, thus increasing the reliability risks of tiered storage systems to a certain extent

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