Patent ID: 11947427
Assignee: EMC IP HOLDING COMPANY LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A method for storage management, comprising:
receiving, at a first data protection server among a plurality of data protection servers of a data protection network for backing up data, a first lock request for a first backup of a first piece of data stored in a storage server from a second data protection server among the plurality of data protection servers, the first lock request being used for requesting execution of a lock operation preventing the first backup from being tampered with and comprising an attribute value of an attribute of the lock operation, the attribute value comprising a retention time of the lock operation;
creating a lock attribute record based on the first lock request, the plurality of data protection servers reaching a consensus on the lock attribute record, the lock attribute record comprising the retention time of the lock operation; and
sending a response that is for the first lock request and is associated with the lock attribute record to the second data protection server;
wherein the attribute comprises at least a timestamp representing a time at which the lock attribute record is created; and
wherein creating the lock attribute record comprises:
determining whether a last lock attribute record of a last lock operation for the first backup already exists in a lock attribute record blockchain which is stored at the first data protection server and on which the plurality of data protection servers reaches a consensus, and
creating the lock attribute record based on the first lock request based on determining that the last lock attribute record does not exist.