Young & Thompson
Magnetic tape apparatus that duplicates data and stores the duplicated data in plural magnetic tape drives
There is provided a magnetic tape apparatus which can easily and rapidly restore data and has improved availability. The magnetic tape apparatus includes a plurality of magnetic tape drives, and a control unit for reading and writing information from/in the magnetic tape drives by commands from a host computer. The control unit has a function for storing the same data in the plurality of magnetic tape drives while duplicating the data. The control unit includes a positioning unit for, when the duplicated data is read from one magnetic tape drive to complete the read, performing positioning such that a read position of another magnetic tape drive in which the same data is stored is advanced by a length corresponding to an amount of data read from one magnetic tape drive, and a read continuing unit for continuing read of data from the other magnetic tape drive when data is unsuccessfully read from one magnetic tape drive.
NEC Corporation
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Yoshiaki Tadashi
Mori Hanagata