Indicating optimized and non-optimized paths to hosts using NVMe-oF in a metro cluster storage system

A command is received from a host regarding accessing an NVMe dispersed namespace in a metro cluster configuration of storage arrays. A namespace group state corresponding to the host and the port is determined and returned to the host. The namespace group state indicates whether the specific commun...

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Bibliographische Detailangaben
Hauptverfasser: Shem Tov, Marina, Black, David L, Tylik, Dmitry Nikolayevich, Gupta, Mukesh
Format: Patent
Sprache:eng
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Zusammenfassung:A command is received from a host regarding accessing an NVMe dispersed namespace in a metro cluster configuration of storage arrays. A namespace group state corresponding to the host and the port is determined and returned to the host. The namespace group state indicates whether the specific communication path between the host and the port is optimized or non-optimized. The namespace group state indicates that the communication path is non-optimized where the host is not located at the same location as the storage array, and that the communication path is optimized where the host is located at the same location as the storage array and the node of the storage array is a preferred node for processing I/O directed to the NVMe dispersed namespace from hosts located in the same location as the storage array.