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

Claim 0:
1. A data snapshot method, the method comprising:
acquiring the capacity of to-be-written data after snapshot, and comparing the capacity of the to-be-written data with a preset capacity;
when the capacity of the to-be-written data is greater than or equal to the preset capacity, writing the to-be-written data into a snapshot volume in a Redirect On Write manner;
when the capacity of the to-be-written data is less than the preset capacity, writing the to-be-written data into a solid state drive in a Redirect On Write manner; and
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.