2000-347811 is referenced by 57 patents.

PROBLEM TO BE SOLVED: To minimize write processing duration by backing up data by transmitting a designated block from a second volume to a magnetic tape unit when a command for copying the designated block from the second volume to the tape unit is received.SOLUTION: A host computer is provided with a means for issuing a CCOPY command for backing up all the data of backup objects stored on divided volumes to a secondary volume 6b continuously to a pair dividing command. On the other hand, a disk system is provided with a means for dividing a designated volume pair when the pair dividing command is received and a means for directly backing up a designated block 17 from the secondary volume 6b to a tape unit 3. Thus, data on the secondary volume 6b are frozen at the time point of pair division and the I/O issue load of the host computer can be reduced.

Direct backup method and storage device system
Application Number
Publication Number
Application Date
June 1, 1999
Publication Date
December 15, 2000
Kimura Koichi
Oeda Takashi
Arakawa Takashi
Kosuge Minoru
Yamakami Kenji
G06F 12/00
G06F 03/06