Patent ID: 8347184
Filing Date: 2013-01-01
Classification: G06F

Abstract:
1. A cloud storage data access method comprising a step of data storing and a step of data retrieving wherein: the data storing step comprises: creating parity values of original data on a data transmitting end before the original data is transmitted to multiple cloud storage centers; and transmitting and storing the original data and parity values according to a preset redundant storing rule to the cloud storage data centers separately; the data retrieving step comprises: following the preset redundant storing rule to access at least one of the cloud storage data centers into which the original data is stored according to an access request; determining whether the original data is available in the accessed cloud storage center; if not available, then retrieving the parity value of the original data and the data used to create the parity value from at least one of the other cloud storage data centers; and restoring the original data based on the parity value of the original data and the data used to create the parity value.