Abstract: A port manager is configured to implement adaptive port ceiling assignment for background Input/Output (I/O) operations between heterogeneous storage arrays. The port manager generates a set of test I/O operations, applies the I/O operations to a port under test, determines a response time to complete the I/O operations on the port under test, and compares the response time of the current test with response times of a set of previous tests. Based on the test values, the port manager identifies a throughput inflection point for the port under test, which is used to set a maximum throughput of the port under test. The adaptive ceiling for the port under test is then set based on the maximum throughput times a ceiling percentage threshold value. The determined adaptive ceiling value is then used to prospectively limit background I/O operations on the port under test.

Abstract: Transferring data for a virtual machine from a source storage device to a destination storage device includes determining if either the source storage device or the destination storage device is capable of unilaterally transferring data to a storage device having only input and output capabilities. The source storage device pushes data to the destination storage device if the source storage device is capable of unilaterally transferring data to a storage device having only input and output capabilities. The destination storage device pulls data from the source storage device if the destination storage device is capable of unilaterally transferring data to a storage device having only input and output capabilities. A host computing device transfers data from the source storage device to the destination storage device in response to neither storage device being capable of unilaterally transferring data to a storage device having only input and output capabilities.

Abstract: Transferring data for a virtual machine from a source storage device to a destination storage device includes determining if either the source storage device or the destination storage device is capable of unilaterally transferring data to a storage device having only input and output capabilities. The source storage device pushes data to the destination storage device if the source storage device is capable of unilaterally transferring data to a storage device having only input and output capabilities. The destination storage device pulls data from the source storage device if the destination storage device is capable of unilaterally transferring data to a storage device having only input and output capabilities. A host computing device transfers data from the source storage device to the destination storage device in response to neither storage device being capable of unilaterally transferring data to a storage device having only input and output capabilities.

Abstract: Embodiments of the present disclosure relate to controlling bandwidth allocations of storage system ports. A maximum bandwidth of one or more ports of the storage device for receiving migration data from a remote storage device are dynamically allocated based on one or more state metric of a storage device. The migration data is migrated from the remote storage device based on each port's bandwidth allocation.