Solution: Ensure the correct link speed is set for the NIC in Windows Server and the corresponding speed is set on the network switch. 1. Open the Network Connections Control Panel tool by pressing the Windows Logo+R, type ncpa.cpl and press Enter.
This is an acknowledged OMSA bug if more than 20 drive members are trying to be added to the RAID-10 array. This is only known to occur on a PowerEdge R720xd that optionally has a 24-drive front SAS backplane internally connected to a PERC H710p Mini controller.
Emulex drivers use a new device API introduced by VMware in ESXi 5.5 that that OMSA does not properly detect. Therefore the Emulex cards are not detected by OMSA. However, the Emulex cards still function normally.
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