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ストレージ友の会


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IBM

             FlashCopy + VolumeCopy

             FlashCopy = Snapshot

             VolumeCopy = Snapshot


                                      FlashCopy(snapshot)




                                                            ※ 2009


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HITACHI
             ShadowImage


                                             ×
             snapshot
                                  snapshot




                                                 ※ 2009


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ACID*1




             ACID



                      ※1   Atomicity:   )   (Consistency)   (Isolation)   (Durability)


11   9   3

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