MODULAR SERVICE LEVEL OBJECTIVE (SLO) SUBSYSTEM FOR A NETWORK STORAGE SYSTEM

摘要

A service level objective (SLO) subsystem that includes an SLO engine in a network storage system that allows new degrees of freedom to be added to the SLO subsystem, without requiring any modification of an associated SLO engine or the system's existing SLOs, and without requiring the SLO engine to have any a priori knowledge of the new degrees of freedom. In certain embodiments, the system has a modular design which includes the SLO engine and one or more SLO modules that interface with the SLO engine. Each SLO module corresponds to a different degree of freedom. Each SLO module evaluates SLO compliance and determines what specific action(s) within its corresponding degree of freedom should be taken to comply with an SLO.

主权项

1. A service level objective (SLO) engine, comprising:
an application program interface (API) configured to enable the SLO engine to communicate with multiple components, each of the components configured to evaluate a different one of multiple categories of configuration state of a data storage system in relation to any specified SLO and to produce a corresponding result; and a compliance component configured to:
rank the results from the components; andidentify one or more operations to perform on the data storage system in one or more of the categories of configuration state to increase a measurement of a category of configuration state to which a specified SLO is satisfied, based on an individual ranked result of the ranked results.