Patent ID: 11893260
Assignee: EMC IP HOLDING COMPANY LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. The system of claim 11, wherein the method further includes:
for each of one or more logical storage units on the first storage system that are members of a snapshot group, including the first logical storage unit, taking a respective snapshot of the logical storage unit, including the first snapshot of the first logical storage unit; and
for each of one or more logical storage units, determining if, for any of the logical storage elements of the logical storage unit, snapshot metadata of the respective snapshot data of the logical storage unit references data that also is referenced for the logical storage element by snapshot metadata of a most recent previous snapshot of the respective logical storage unit of the logical storage element,
wherein, for any logical storage element of the one or more logical storage units for which the data is not also referenced by the snapshot metadata of a most recent previous snapshot of the respective logical storage unit of the logical storage element, the replication instruction specifies the first logical storage element and the data.