Set these values: Under NFS, Select NFS.MaxVolumes: ESXi 5.0/5.1/5.5: Set NFS.MaxVolumes to 256 Under Net, Select Net.TcpipHeapSize: The amount of heap memory, measured in megabytes, which is allocated for managing VMkernel TCP/IP network connectivity. When increasing the number of NFS datastores, increase the default amount of heap memory as well: ESXi 5.0/5.1/5.5: Set Net.TcpipHeapSize to 32 Under Net, Select Net.TcpipHeapMax: The maximum amount of heap memory, measured in megabytes, which can be allocated for managing VMkernel TCP/IP network connectivity. When increasing the number of NFS datastores, increase the maximum amount of heapRead More