A storage system in a remote copy configuration includes a redirect mechanism. The free end of the swing arm and the forward end portion of the back member have coplanar blade-engaging elements thereon which serve to engage the forward end of the blade and which are commonly disposed on an arc that circumscribes a third coplanar blade-engaging element disposed on a coupling block of a tensioning mechanism for mounting the rearward end of the blade. Voice volume is adjusted up or down in response to a control signal that is generated in view of the comparison between the sampled voice volume to ambient noise relationship and the predetermined ambient noise to voice volume relationship.