The invention provides a power utilization information acquisition system based cross-platform storage data migration method. The method comprises the following steps: 1) establishing a data migration framework; 2) making early-stage preparations for data migration; 3) performing data migration: dividing a temporary storage space; configuring a private cloud controller VPLEX and multi-path software installation; migrating production library IBM DS8,100 storage data to a query library HP P9,500 for storage; and 4) performing data verification: after migrating the data to a query library HP P9,500 storage device from a production library IBM DS8,100 storage device, verifying the completeness and availability of the migrated data. The method is based on a migration scheme of a VPLEX hardware engine and is short in shutdown time, short in time limit for a project, high in reliability, high in security and simple in operation.