Dell Products Inc.

Emc IP Holding Company LLC

Santoshkumar Konnur

Deepak Vokaliga

Ananthakrishnan Anirudhan

Amit Pundalik Anchi

Srinivas Kangyampeta

Shruti Asmita

An example methodology includes, by a computing device, receiving a request to migrate a logical unit number (LUN) from a source array to a target array and, responsive to a determination that the LUN is a large LUN, dividing the large LUN into a plurality of partitions, creating a number of sessions corresponding to the plurality of partitions, wherein each session of the created sessions is operable to migrate data from a partition of the plurality of partitions, and initiating the created sessions to start copying data from the respective partitions in parallel. The method may also include, by the computing device, responsive to a determination that the LUN is not a large LUN, creating a single session operable to migrate data from the LUN and initiating the single session to start copying data from the LUN.

Systems and methods for improved migration of large LUNs

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.

Adaptive port ceiling assignment for background I/O operations between heterogeneous storage arrays

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.

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Bengaluru, India

Santoshkumar Konnur