A computer-implemented method for enabling replacement of a cloud storage interval, the method comprising: determining a cloud storage interval to be replaced in a cloud storage system; determining a target cloud storage interval in the cloud storage system; and replicating data in the cloud storage interval to be replaced to the target cloud storage interval, when the data in the cloud storage interval to be replaced and data in the target cloud storage interval on which a data replication operation has been performed meet a preset content verification condition, replicating data comprising: clearing (S201, S301, S401, S501) data directory information of the cloud storage interval to be replaced; replicating (S202, S302, S402, S502) the data in the cloud storage interval to be replaced to the target cloud storage interval; calculating (S203, S303, S403, S503) a first content check value of the target cloud storage interval obtained after the data in the cloud storage interval to be replaced is replicated; locking (S304, S404) an input/output index address ring data component, wherein the input/output index address ring data component stores an index address pointing to a physical address corresponding to the cloud storage interval to be replaced; detecting (S305, S405) whether a distance between a position of the target cloud storage interval in the input/output index address ring data component and a current operating position of the input/output index address ring data component is greater than a preset distance threshold; when the distance between the position of the target cloud storage interval and the current operating position of the input/output index address ring data component is greater than or equal to the preset distance threshold, locking (S204, S306, S406, S504) the cloud storage interval to be replaced, and calculating a second content check value of the cloud storage interval to be replaced; and sending (S205, S307, S407, S506) information of the target cloud storage interval to a memory management unit when the first content check value matches the second content check value. determining a cloud storage interval to be replaced in a cloud storage system; determining a target cloud storage interval in the cloud storage system; and replicating data in the cloud storage interval to be replaced to the target cloud storage interval, when the data in the cloud storage interval to be replaced and data in the target cloud storage interval on which a data replication operation has been performed meet a preset content verification condition, replicating data comprising: clearing (S201, S301, S401, S501) data directory information of the cloud storage interval to be replaced; replicating (S202, S302, S402, S502) the data in the cloud storage interval to be replaced to the target cloud storage interval; calculating (S203, S303, S403, S503) a first content check value of the target cloud storage interval obtained after the data in the cloud storage interval to be replaced is replicated; locking (S304, S404) an input/output index address ring data component, wherein the input/output index address ring data component stores an index address pointing to a physical address corresponding to the cloud storage interval to be replaced; detecting (S305, S405) whether a distance between a position of the target cloud storage interval in the input/output index address ring data component and a current operating position of the input/output index address ring data component is greater than a preset distance threshold; when the distance between the position of the target cloud storage interval and the current operating position of the input/output index address ring data component is greater than or equal to the preset distance threshold, locking (S204, S306, S406, S504) the cloud storage interval to be replaced, and calculating a second content check value of the cloud storage interval to be replaced; and sending (S205, S307, S407, S506) information of the target cloud storage interval to a memory management unit when the first content check value matches the second content check value. clearing (S201, S301, S401, S501) data directory information of the cloud storage interval to be replaced; replicating (S202, S302, S402, S502) the data in the cloud storage interval to be replaced to the target cloud storage interval; calculating (S203, S303, S403, S503) a first content check value of the target cloud storage interval obtained after the data in the cloud storage interval to be replaced is replicated; locking (S304, S404) an input/output index address ring data component, wherein the input/output index address ring data component stores an index address pointing to a physical address corresponding to the cloud storage interval to be replaced; detecting (S305, S405) whether a distance between a position of the target cloud storage interval in the input/output index address ring data component and a current operating position of the input/output index address ring data component is greater than a preset distance threshold; when the distance between the position of the target cloud storage interval and the current operating position of the input/output index address ring data component is greater than or equal to the preset distance threshold, locking (S204, S306, S406, S504) the cloud storage interval to be replaced, and calculating a second content check value of the cloud storage interval to be replaced; and sending (S205, S307, S407, S506) information of the target cloud storage interval to a memory management unit when the first content check value matches the second content check value.