A storage array disposed in a data storage system is reconfigured. In one example embodiment, this is accomplished by using a low-bandwidth low-swing amplifier in the common mode feedback loop to improve the even-order harmonic performance in the signal path. The magnetized member, which is molded by mixing a magnetic powder in a resin, is bonded to the fixed member with a silicone resin based adhesive, and a thickness of an adhesive layer of the silicone resin based adhesive is 50 \u03bcm or more and 100 \u03bcm or less. Activation of the robot is stopped when the main contact is malfunctioning and the main relay is controlled to close the main contact for a given period of time when that the main contact is operating normally. A plurality of acceleration sensors may be disposed within the doll to detect acceleration experienced during a shaking episode, and the plurality of acceleration sensors may trigger warnings to the caregiver when portions of the doll experience acceleration sufficient to endanger an infant.