Sustaining backup service level objectives using dynamic resource allocation

A non-transitory machine-readable medium having instructions stored therein, which when executed by a processor, cause the processor to perform operations, the operations comprising:

• receiving, by a first storage system, a request to perform a backup session from the first storage system to a second storage system based on a backup service level objective (SLO) that has been configured for the backup session, wherein the backup SLO includes information specifying that the backup session has to be performed within a predetermined period of time;
• determining a backup size of the backup session based on an amount of data that has been changed since a last backup session from the first storage system to the second storage system;
• determining that the backup session cannot be completed within the predetermined period of time based on the backup size in view of the statistics of the prior backup sessions;
• dynamically performing a first dynamic resource allocation (DRA) to modify the first backup resource to satisfy the SLO;
• and
• initiating the backup session by transmitting backup data from the first storage system to the second storage system using the modified first backup resource.

A computer-implemented method for performing a backup session, the method comprising:

• receiving, by a first storage system, a request to perform a backup session from the first storage system to a second storage system based on a backup service level objective (SLO) that has been configured for the backup session;
• in response to the request, determining that a first backup resource allocated for the backup session by the first storage system cannot satisfy the SLO based on statistics of prior backup sessions in view of characteristics of the backup session to be performed;
• dynamically performing, by a dynamic resource allocation (DRA) module hosted by the first storage system, a first DRA to modify the first backup resource to satisfy the SLO;
• initiating the backup session by transmitting backup data from the first storage system to the second storage system using the modified first backup resource;
• monitoring performance of the backup session in view of the SLO;
• determining during the backup session that the backup session still does not satisfy the SLO using the modified first backup resource;
• and
• dynamically performing a second DRA to further modify the modified first backup resource.