Production and decay of the isotope (271)Ds were studied. The isotope was produced by Pb-208 + Ni-64 --> (271)Ds + n reaction. Fourteen alpha-decay chains have been assigned to decays originating from the isotope (271)Ds. An excitation function of the production of this isotope was measured. The results have provided a good confirmation of production and decay of (271)Ds reported by Hofmann et al. The presence of an isomeric state in (271)Ds has been confirmed. The existence of a possible isomeric state in (267)Hs is presented.