DISK ARRAY DEVICE AND DATA MANAGEMENT METHOD FOR MANAGING MASTER DATA AND REPLICATION DATA REPLICATED FROM MASTER DATA

摘要

An update management table store control section stores an update management table saved in cache memory in a system volume. An update management table return control section saves the update management table stored in system volume in cache memory, upon accepting a device boot-up instruction. An update management table control section updates replication data stored in replication volume for only an update difference indicated by the update management table saved in cache memory.