Patent ID: 11907076
Assignee: INSPUR SUZHOU INTELLIGENT TECHNOLOGY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. The method according to claim 1, wherein the step of when a background write-back thread detects that there is data writing into the solid state drive, writing corresponding data in a source volume into the snapshot volume in a Copy On Write manner, and writing the to-be-written data in the solid state drive into the source volume comprises:
acquiring corresponding data of the to-be-written data in a source volume;
writing the corresponding data of the to-be-written data into the snapshot volume, and updating index information of the snapshot volume;
acquiring newly written data in the solid state drive; and
replacing the corresponding data of the to-be-written data in the source volume with the newly written data in the solid state drive, and updating index information of the source volume.