A backup copy of a source data volume is created by first performing an instant virtual copy with source volume identifier (ID) suspended, then creating a physical tape backup copy from the instant virtual copy with the source volume ID being reintroduced. This creates an exact duplicate of the source volume with minimal impact on access to the source volume. Moreover, the resultant backup copy is less costly and error prone because it is created by a machine-automated process rather than various commands issued by a system administrator. In addition, by differentiating the volume IDs during intermediate copy steps, the invention is more fault tolerant since failure of the storage subsystem will not result in source and a temporary copy having confusingly indistinguishable volume IDs.

Una copia de reserva de un volumen de los datos de fuente es creada primero realizando una copia virtual inmediata con el identificador del volumen de la fuente (identificación) suspendido, entonces creando una copia de reserva física de cinta de la copia virtual instantánea con la identificación del volumen de la fuente que es reintroducida. Esto crea un duplicado exacto del volumen de la fuente con impacto mínimo en el acceso al volumen de la fuente. Por otra parte, la copia de reserva resultante es menos costosa y error propensa porque es creada por un proceso ma'quina-automatizado más bien que los varios comandos publicados por un administrador de sistema. Además, distinguiendo las identificaciones del volumen durante copia intermedia camina, la invención es más avería tolerante puesto que la falta del subsistema del almacenaje no dará lugar a fuente y a una copia temporal que tiene identificaciones confusamente indistinguibles del volumen.

 
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