Abstract: Methods, system, and non-transitory processor-readable storage medium for a test selection system are provided herein. An example method includes selecting, by a test selection system, a regression test case from a plurality of regression test cases in a software testing lifecycle system. The test selection system calculates a fault detection score for the regression test case, based on a fault detection decay rate score associated with the regression test case. The test selection system selects the regression test case for execution on a test system based on the fault detection score, and executes the regression test case on the test system.

Abstract: Methods, system, and non-transitory processor-readable storage medium for test coverage optimizing system are provided herein. An example method includes executing at least one test case on a system. A weighted average baseline metrics calculation module calculates a weighted average baseline metric for at least one test case using test related failures that occurred during the execution. A coverage imbalance module calculates a coverage imbalance associated with a test domain using the weighted average baseline metric, where the test domain comprises the at least one test case.

Abstract: Embodiments of the present disclosure provide methods, apparatuses and computer program products for managing a storage system. The storage system comprises a plurality of cache devices and a bottom storage device, and the plurality of cache devices comprise a first cache device group and a second cache device group. The method according to an aspect of the present disclosure comprises: receiving an input/output (I/O) request for the storage device; in response to determining that the I/O request triggers caching of target data, storing the target data from the storage device into the first cache device group if the I/O request is a read request; and storing the target data into the second cache device group if the I/O request is a write request. Embodiments of the present disclosure introduce a new architecture for cache devices so that the processing delay is shortened, and/or, the storage capacity can be used more effectively.

Abstract: Embodiments of the present disclosure provide methods, apparatuses and computer program products for managing a storage system. The storage system comprises a plurality of cache devices and a bottom storage device, and the plurality of cache devices comprise a first cache device group and a second cache device group. The method according to an aspect of the present disclosure comprises: receiving an input/output (I/O) request for the storage device; in response to determining that the I/O request triggers caching of target data, storing the target data from the storage device into the first cache device group if the I/O request is a read request; and storing the target data into the second cache device group if the I/O request is a write request. Embodiments of the present disclosure introduce a new architecture for cache devices so that the processing delay is shortened, and/or, the storage capacity can be used more effectively.

Abstract: Embodiments of the present disclosure provide methods, apparatuses and computer program products for managing a storage system. The storage system comprises a plurality of cache devices and a bottom storage device, and the plurality of cache devices comprise a first cache device group and a second cache device group. The method according to an aspect of the present disclosure comprises: receiving an input/output (I/O) request for the storage device; in response to determining that the I/O request triggers caching of target data, storing the target data from the storage device into the first cache device group if the I/O request is a read request; and storing the target data into the second cache device group if the I/O request is a write request.

Abstract: Embodiments of the disclosure provide a method, a computer [program product and apparatus for a soft-switch in a storage system, by setting data in a source of the soft-switch to be read-only and starting a replication process of the data to a destination of the soft-switch in response to a soft-switch request; recording at the source an update operation for the data during the replication process and synchronously recording the update operation into the destination; updating the replicated data at the destination with the synchronously recorded update operation in response to the completion of the replication process; and disabling a data access to the source and enabling a data access to the destination.

Abstract: Embodiments of the present disclosure provide a method and apparatus for dynamic storage tiering by calculating a density of data according to a temperature of the data, and making the density of data with a higher temperature smaller; obtaining density threshold of each of the tiers, wherein the density threshold of an upper tier is smaller than that of a lower tier; comparing the density of the data with the density threshold of each of the tiers to determine which tier the data should be moved to; and moving the data to the determined tier. Embodiments of the present invention may be used to provide a dynamic storage tiering scheme with higher flexibility and scalability.

Abstract: Embodiments of the present disclosure provide methods, apparatuses and computer program products for managing a storage system. The storage system comprises a plurality of cache devices and a bottom storage device, and the plurality of cache devices comprise a first cache device group and a second cache device group. The method according to an aspect of the present disclosure comprises: receiving an input/output (I/O) request for the storage device; in response to determining that the I/O request triggers caching of target data, storing the target data from the storage device into the first cache device group if the I/O request is a read request:, and storing the target data into the second cache device group if the I/O request is a write request.

Abstract: Embodiments of the disclosure provide a method, a computer [program product and apparatus for a soft-switch in a storage system, by setting data in a source of the soft-switch to be read-only and starting a replication process of the data to a destination of the soft-switch in response to a soft-switch request; recording at the source an update operation for the data during the replication process and synchronously recording the update operation into the destination; updating the replicated data at the destination with the synchronously recorded update operation in response to the completion of the replication process; and disabling a data access to the source and enabling a data access to the destination.

Abstract: Embodiments of the present disclosure provide a method and apparatus for dynamic storage tiering by calculating a density of data according to a temperature of the data, and making the density of data with a higher temperature smaller; obtaining density threshold of each of the tiers, wherein the density threshold of an upper tier is smaller than that of a lower tier; comparing the density of the data with the density threshold of each of the tiers to determine which tier the data should be moved to; and moving the data to the determined tier. Embodiments of the present invention may be used to provide a dynamic storage tiering scheme with higher flexibility and scalability.