In a storage control apparatus employed in a storage system arranged by containing a plurality of storage control apparatus connected via an IP (Internet Protocol) network to each other, the storage control apparatus stores thereinto necessary storage expiration equal to such an expiration during which data is required to be stored under safe condition, this data being stored in a first storage area of the storage control apparatus; stores thereinto first guarantee expiration equal to such an expiration during which the first storage area can store the data under normal condition; and stores thereinto second guarantee expiration equal to such an expiration during which a second storage area can store the data under normal condition, this second storage area being equal to a storage area of another storage control apparatus. When the necessary storage expiration of the first storage area is expired after the first guarantee expiration of this first storage area, the storage control apparatus transfers the data stored in the first storage area to the second storage area having the second guarantee expiration expired after the first guarantee expiration.

 
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