87.3.1 START-DUP

If the controller 1 as source device will be copied, it must be deactivated too, in order to prevent a parallel accesses.
Warning: During copying the hard disk (controller 1) device as source device, no operation message will be stored (CGD, Hista).
From this reason, before duplication of the device with active :PDS: the switch (or SWU unit) should be switched off (or if it is not possible, start the duplication over night).