vDS and network redundancy

Hello all,

I have been tasked to have full network redundancy in our vDS setup (ESXi 5.5/vCenter 5.5) for my management network. Will I need to have 2 separate NIC's to do so?

Is it really necessary to have full redundancy for a management network? Would it be easier to do this in vSS setup?

Any insight would be appreciated.