1. A method comprising: identifying, by a differential health-check module, a first time period wherein a first component in an information management system operated, at least in part, under the control of a storage manager; identifying, by the differential health-check module, a second time period that follows the first time period, wherein the first component operated, at least in part, under the control of the storage manager; evaluating, by the differential health-check module, a first value of a first performance metric for the first component operating in the first time period, wherein the first value is based on information provided by the storage manager; evaluating, by the differential health-check module, a second value of the first performance metric for the first component operating in the second time period, wherein the second value is based on information provided by the storage manager; generating, by the differential health-check module, an indication to a user of a comparison of the second value of the first performance metric to the first value of the first performance metric; and wherein the first time period occurs before at least part of the information management system undergoes a restore operation, and the second time period occurs after the restore operation is completed.