Patent ID: 9251008
Filing Date: 2016-02-02
CPC Classification: G06F

Claim Text:
1. A computer program product for backing up objects from a client to a first backup server and a second backup server, wherein the computer program product comprises a computer readable storage medium having computer readable program code embodied therein that executes to perform operations, the operations comprising: backing-up objects from a client to the first backup server; generating, by the first backup server, metadata on the objects from the client; transmitting as part of a metadata-only replication command, by the first backup server, the metadata to the second backup server, wherein the objects represented by the transmitted metadata backed-up at the first backup server are not copied to the second backup server as part of the metadata-only replication command, and wherein while the objects are backed up to the first backup server, the second backup server maintains only client object metadata of the objects backed-up to the first backup server from the client; determining that the first backup server is unavailable after transmitting the metadata as part of the metadata-only replication operation; using the metadata at the second backup server to determine modifications to the objects at the client since the metadata was last generated in response to determining that the first backup server is unavailable; and backing-up, by the client, the determined modifications to the objects to the second backup server to backup.