The invention discloses an intelligent mobile terminal data storage and
backup method and
system based on multi-
cloud storage. The method comprises the steps that firstly, an intelligent mobile terminal selects a plurality of cloud disks to carry out the
authorization authentication, and an authorized cloud disk set R is obtained; secondly, a multi-
cloud storage scheme planner converts the attribute information of a file to be stored and backed up into a storage vector U, and a user requested cloud disk
attribute weight vector W is calculated according to U; thirdly, the multi-
cloud storage scheme planner searches the set R for a cloud disk subset R' with the
residual space suitable for the file to be stored and backed up, for all cloud disks in R', a cloud disk weight vector Qw is generated according to the expectation value vector mu for attributes of the cloud disks of a user, the final weight of the cloud disks is calculated according to Qw and W, m cloud disks are selected from the set R' as a multi-
cloud storage system, the reliability index P of the
system is calculated, if P is larger than or equal to Fp, the file to be stored and backed up is stored into the candidate multi-
cloud storage system, and Fp is the reliability index set by the user.