Apparatus and method of maintaining reliable offline mirror copies in virtual volume groups
AssigneeInternational Business Machines Corporation
InventorsGerald Francis McBrearty, Johnny Meng-Han Shieh
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AssigneeInternational Business Machines Corporation
InventorsGerald Francis McBrearty, Johnny Meng-Han Shieh
Estimating the term…
A method, system and apparatus for synchronizing an offline mirror to a working mirror while allowing access to data stored in the working mirror are provided. A mirroring map is created. The mirroring map includes at least two working mirrors and an offline mirror. When the offline mirror is to be synchronized with one of the working mirrors, the two working mirrors are disassociated from each other, making each one an independent storage system. The offline mirror is then synchronized to one of the disassociated mirrors. The working mirror that is not being used to synchronize the offline mirror is used to provide access to stored data if needed. After the offline mirror is synchronized, the two working mirrors are re-associated with each other.
A method of synchronizing an offline mirror to a working mirror comprising the steps of:
A computer program product on a computer readable medium for synchronizing an offline mirror to a working mirror comprising:
An apparatus for synchronizing an offline mirror to a working mirror comprising:
A computer system for synchronizing an offline mirror to a working mirror comprising:
Dependencies are inferred from the claim text.