Abstract: A method, apparatus, and computer program product for thin-provisioning of storage in a storage system by an adviser is provided. A workload profile of the storage is created from performance data. The workload profile includes a measurement of changed data per a predetermined time and resource utilization data over a period of time. A capacity estimate is derived from the measurement of changed data per a predetermined time. A placement estimate is derived from the resource utilization data obtained over a period of time. A target capacity is recommended to a user based on the capacity estimate. A placement location is recommended to a user based on the placement estimate. A predicted resource utilization is provided to the user based on the capacity estimate or the placement estimate.

Abstract: A method, apparatus, and computer program product for thin-provisioning of storage in a storage system by an adviser is provided. A workload profile of the storage is created from performance data. The workload profile includes a measurement of changed data per a predetermined time and resource utilization data over a period of time. A capacity estimate is derived from the measurement of changed data per a predetermined time. A placement estimate is derived from the resource utilization data obtained over a period of time. A target capacity is recommended to a user based on the capacity estimate. A placement location is recommended to a user based on the placement estimate. A predicted resource utilization is provided to the user based on the capacity estimate or the placement estimate.

Abstract: A method for determining a single reference residency time of a cache comprises the steps of causing test data to be staged to the cache and measuring a response time after a wait time has elapsed. The measuring step is repeated for a plurality of values of wait time. The method also includes the step of determining a boundary value of the wait time. A wait time of less than or equal to the boundary value yields a corresponding response time representing a cache hit and a wait time of greater than the boundary value yields a corresponding response time representing a cache miss. The boundary value is an estimate of the single reference residency time of the cache.