As NFs datastore require VMkernel NIC.

For creating VMkernel nic forllow the below procedure.

From the VI client of the ESX machine, try to open

configuraton tab > Networking > Add networking

Then follow the wizard to give in the IP , netmask, and also gateway when you are promted.

As now vMkernel nic is ready, you can try to mount the NFS shares as below.

configuration tab > storage > Add storage

In the wizard select option Network File system > then give the nfs server name or IP, and the share details.

this will create a NFs datastore in the storage pool of the ESX.

You can also do a normal mount of the NFs share on the ESX console, but this can not be used to create VM's over it.

for that use the below command.

mount -t nfs <NFS server name or IP >:/<share name> /<desination where you wanted to mount the share>

let meknow if you hae any issue while doing this.

-Karunakar