Patent ID: 8719518

Claim:
A library system comprising: a library apparatus comprising a transport mechanism that transports storage media, and a first drive that reads data from and writes data to a storage medium transported thereto by the transport mechanism, in response to an access request that is received, wherein the library apparatus performs a first procedure comprising: sending, upon detection of replacement of the first drive by a second drive, management data describing the replacement of the first drive, and migrating, in response to a data migration command containing migration source information that specifies a migration source medium, data from the specified migration source medium to another storage medium, based on the migration source information; and a management apparatus that performs a second procedure comprising: receiving the management data from the library apparatus, determining, based on relationships between the management data and the storage media in the library apparatus, which of the storage media is to become unusable for reading or writing or both reading and writing data, and designating the determined storage medium as the migration source medium, and sending the data migration command containing the migration source media information to the management apparatus to specify the migration source medium that is designated.