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ONTAP NVMe namespaces missing after Microsoft SQL Server HBA replacement

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Applies to

  • ONTAP 9
  • NVMe over Fiber Channel (NVMe/FC)
  • Windows Server
  • Multipath Input/Output (MPIO)
  • Microsoft DSM

Issue

  • NVMe/FC LUNs are missing after a HBA card is replaced on a Windows 2019 SQL Server
  • On ONTAP cluster, LUNs are online and mapped and no issues are found
  • LUNs are showing as grayed out in the Windows Server's Device Manager > Hidden Devices

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