If you want Network-attached storage(NAS) cheapest price with high capacity.
New product Launches by Netgear ReadyNAS 104 4-Bay,max capacity would be 16TB ,
it's good for Home/small office.
Price of ReadyNAS and Western Digital Red WD30EFRX in India
ReadyNAS 104 4-Bay, Diskless RN10400 Price - Rs, 16000.00 + tax
Western Digital Red WD30EFRX 3TB Price - Rs9,800.00+Tax
Western Digital also available in 4TB.