Managing snapshots stored locally in a storage system and in cloud storage utilizing policy-based snapshot lineages

A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code when executed by at least one processing device causes the at least one processing device to perform steps of:

• identifying at least one snapshot policy for creating a snapshot lineage comprising two or more snapshots of a storage volume comprising data stored on one or more storage devices of a storage system, the snapshot lineage comprising (i) a local snapshot lineage stored on at least one of the one or more storage devices of the storage system and (ii) two or more cloud snapshot lineages stored on cloud storage of two or more clouds external to the storage system;
• generating a given one of the two or more snapshots of the storage volume in accordance with the at least one snapshot policy;
• storing the given snapshot of the storage volume in the local snapshot lineage stored on the at least one storage device of the storage system;
• copying the given snapshot of the storage volume from the local snapshot lineage stored on the at least one storage device of the storage system to first and second ones of the two or more cloud snapshot lineages stored on first and second cloud storage of first and second clouds external to the storage system in accordance with the at least one snapshot policy;
• and
• providing an interface for managing the snapshot lineage by accessing the given snapshot of the storage volume from at least one of the local snapshot lineage, the first cloud snapshot lineage, and the second cloud snapshot lineage;
• wherein the at least one snapshot policy specifies at least one of:
• a first age at which the given snapshot is to be copied to the first cloud snapshot lineage and a second age at which the given snapshot is to be copied to the second cloud snapshot lineage, the second age being different than the first age;
• a first type of compression to be applied when copying the given snapshot to the first cloud snapshot lineage and a second type of compression to be applied when copying the given snapshot to the second cloud snapshot lineage, the second type of compression being different than the first type of compression;
• and
• a first type of encryption to be applied when copying the given snapshot to the first cloud snapshot lineage and a second type of encryption to be applied when copying the given snapshot to the second cloud snapshot lineage, the second type of encryption being different than the first type of encryption.

A method comprising steps of:

• identifying at least one snapshot policy for creating a snapshot lineage comprising two or more snapshots of a storage volume comprising data stored on one or more storage devices of a storage system, the snapshot lineage comprising (i) a local snapshot lineage stored on at least one of the one or more storage devices of the storage system and (ii) two or more cloud snapshot lineages stored on cloud storage of two or more clouds external to the storage system;
• generating generate a given one of the two or more snapshots of the storage volume in accordance with the at least one snapshot policy;
• storing the given snapshot of the storage volume in the local snapshot lineage stored on the at least one storage device of the storage system;
• copying the given snapshot of the storage volume from the local snapshot lineage stored on the at least one storage device of the storage system to first and second ones of the two or more cloud snapshot lineages stored on first and second cloud storage of first and second clouds external to the storage system in accordance with the at least one snapshot policy;
• and
• providing an interface for managing the snapshot lineage by accessing the given snapshot of the storage volume from at least one of the local snapshot lineage, the first cloud snapshot lineage, and the second cloud snapshot lineage;
• wherein the at least one snapshot policy specifies at least one of:
• a first age at which the given snapshot is to be copied to the first cloud snapshot lineage and a second age at which the given snapshot is to be copied to the second cloud snapshot lineage, the second age being different than the first age;
• a first type of compression to be applied when copying the given snapshot to the first cloud snapshot lineage and a second type of compression to be applied when copying the given snapshot to the second cloud snapshot lineage, the second type of compression being different than the first type of compression;
• and
• a first type of encryption to be applied when copying the given snapshot to the first cloud snapshot lineage and a second type of encryption to be applied when copying the given snapshot to the second cloud snapshot lineage, the second type of encryption being different than the first type of encryption;
• and
• wherein the method is performed by at least one processing device comprising a processor coupled to a memory.