The invention discloses a data block relevance data storage method for improving
network security availability, which comprises the following steps of: firstly, analyzing a historical IO (Input / Output) request, discovering a data block set which is frequently collaboratively accessed, forming a high-relevance
data combination, and calculating an IO
delay revenue factor, a space cost factor and
collaboration access intensity, so as to form a high-relevance
data combination; comprehensively evaluating the migration value of each frequent item set data; by constructing a conflict
graph model, analyzing a resource competition relationship among different frequent item set data, correcting an expected utility value by using an interference sensing weight, and identifying and avoiding potential resource conflicts; based on the corrected utility value,
particle swarm optimization processing is adopted to optimize and select frequent item set data with the highest utility value under the constraint of a high-speed storage space, the frequent item set data are sequentially incorporated into a migration
list, and it is ensured that the overall revenue is maximized under
limited resources; and according to the priority order of the candidate
list, the data block migration is executed by adopting a batch migration strategy, and the storage performance is improved while the
system stability is ensured.