Methods, systems, and apparatus are provided for automated isolation of selected analytes, to which magnetically-responsive solid supports are bound, from other components of a sample. A mixture of a biocompatible metal, a spacing agent, and a binder is provided. In one embodiment, the metal layer has regions with insulation filled channels or voids and a layer of insulator such as unoxidized porous silicon disposed between the metal substrate and a silicon integrated circuit layer. Based on the measured voltage of the battery at no-load, the measured voltage of the battery at full-load, and the detected current provided to the power amplifier at full-load, a resistance of the battery is determined. A request is received to start one or more virtual machines from the virtual machine image in a second different region, and the virtual machine image is transmitted from the first region to the second region and one or more virtual machines are started from the virtual machine image in a datacenter of the second different region.