Storing recovery data for a data center includes providing synchronous data from the data center to a local destination, providing chunks of data from the local destination to a first remote destination, different from the first remote destination, and providing chunks of data from the data center to a second remote destination. The copolymers have a molar content of units resulting from butadiene of \u22678%, said units comprising trans-1,2 cyclohexane linkages, and a number-average molecular mass Mn of \u226740,000 gmol. The identification card is adapted to be secured within the casing so that it can be visualized through a window aperture formed therein. Accepting recesses are formed at the bottom of the insulating housing to receive the soldering tail.