Unified metadata search

A system, comprising:

• a processor configured to:
• receive, at a cloud service system, metadata associated with content stored in a plurality of different storage domains, wherein the cloud service system receives the metadata associated with content stored in the plurality of different storage domains via a plurality of persistent connection virtualization containers, wherein each of the plurality of different storage domains includes a corresponding secondary storage cluster, wherein a first persistent connection virtualization container of the plurality of persistent connection virtualization containers maintains bidirectional communications between the cloud service system and a first secondary storage cluster associated with a first storage domain of the plurality of different storage domains and a second persistent connection virtualization container of the plurality of persistent connection virtualization containers maintains bidirectional communications between the cloud service system and a second secondary storage cluster associated with a second storage domain of the plurality of different storage domains, wherein the first secondary storage cluster provides to the cloud service system via the first persistent connection virtualization container, first metadata associated with content stored in a first primary storage system to which the first secondary storage cluster is associated and second metadata associated with content stored in the first secondary storage cluster and the second secondary storage cluster provides to the cloud service system via the second persistent connection virtualization container, third metadata associated with content stored in a second primary storage system to which the second secondary storage cluster is associated and fourth metadata associated with content stored in the second secondary storage cluster;
• store and index together, at the cloud service system, the first metadata associated with content stored in the first primary storage system, the second metadata associated with content stored in the first secondary storage cluster, the third metadata associated with content stored in the second primary storage system, and the fourth metadata associated with content stored in the second secondary storage cluster;
• and
• provide, at the cloud service system, a unified metadata search interface for metadata associated with content stored in the first primary storage system, the second primary storage system, the first secondary storage cluster, and the second secondary storage cluster;
• and
• a memory coupled to the processor and configured to provide the processor with instructions.

A computer program product, the computer program product being embodied in a non-transitory computer readable storage medium and comprising instructions for:

• receiving, at a cloud service system, metadata associated with content stored in a plurality of different storage domains, wherein the cloud service system receives the metadata associated with content stored in the plurality of different storage domains via a plurality of persistent connection virtualization containers, wherein each of the plurality of different storage domains includes a corresponding secondary storage cluster, wherein a first persistent connection virtualization container of the plurality of persistent connection virtualization containers maintains bidirectional communications between the cloud service system and a first secondary storage cluster associated with a first storage domain of the plurality of different storage domains and a second persistent connection virtualization container of the plurality of persistent connection virtualization containers maintains bidirectional communications between the cloud service system and a second secondary storage cluster associated with a second storage domain of the plurality of different storage domains, wherein the first secondary storage cluster provides to the cloud service system via the first persistent connection virtualization container, first metadata associated with content stored in a first primary storage system to which the first secondary storage cluster is associated and second metadata associated with content stored in the first secondary storage cluster and the second secondary storage cluster provides to the cloud service system via the second persistent connection virtualization container, third metadata associated with content stored in a second primary storage system to which the second secondary storage cluster is associated and fourth metadata associated with content stored in the second secondary storage cluster;
• storing and indexing together, at the cloud service system, the first metadata associated with content stored in the first primary storage system, the second metadata associated with content stored in the first secondary storage cluster, the third metadata associated with content stored in the second primary storage system, and the fourth metadata associated with content stored in the second secondary storage cluster;
• and
• providing, at the cloud service system, a unified metadata search interface for metadata associated with content stored in the first primary storage system, the second primary storage system, the first secondary storage cluster, and the second secondary storage cluster.