STORAGE CONTROL DEVICE, STORAGE CONTROL METHOD, AND RECORDING MEDIUM
First Claim
1. A storage control device connected to a master disk device that stores data into a plurality of segments continuously, and a plurality of copy disk devices that are copy destinations of the data, the storage control device comprising:
- a clone processing unit that, when receiving a copy instruction for one of the copy disk devices, repeats reading and writing of each of the segments in order of address to complete copy, andthat, when a first copy disk that is the copy disk device other than a later copy disk that is the specified copy disk device is during copy when receiving the copy instruction, starts copy of the later copy disk from the segment during reading, and, after the completion of reading data of the segment, performs writing into both the first copy disk and the later copy disk.
3 Assignments
0 Petitions
Accused Products
Abstract
A storage control device according to the present invention connected to a master disk device that stores data into a plurality of segments continuously, and a plurality of copy disk devices that are copy destinations of the data, the storage control device includes: a clone processing unit that, when receiving a copy instruction for one of the copy disk devices, repeats reading and writing of each of the segments in order of address to complete copy, and that, when a first copy disk that is the copy disk device other than a later copy disk that is the specified copy disk device is during copy when receiving the copy instruction, starts copy of the later copy disk from the segment during reading, and, after the completion of reading data of the segment, performs writing into both the first copy disk and the later copy disk.
58 Citations
9 Claims
-
1. A storage control device connected to a master disk device that stores data into a plurality of segments continuously, and a plurality of copy disk devices that are copy destinations of the data, the storage control device comprising:
-
a clone processing unit that, when receiving a copy instruction for one of the copy disk devices, repeats reading and writing of each of the segments in order of address to complete copy, and that, when a first copy disk that is the copy disk device other than a later copy disk that is the specified copy disk device is during copy when receiving the copy instruction, starts copy of the later copy disk from the segment during reading, and, after the completion of reading data of the segment, performs writing into both the first copy disk and the later copy disk. - View Dependent Claims (2, 3, 4)
-
-
5. A storage control method of a storage control device connected to a master disk device that stores data into a plurality of segments continuously, and a plurality of copy disk devices that are copy destinations of the data, the storage control method comprising:
-
by the storage control device, receiving a copy instruction for one of the copy disk devices, and repeating reading and writing of each of the segments in order of address to complete copy; and when a first copy disk that is the copy disk device other than a later copy disk that is the specified copy disk device is during copy when receiving the copy instruction, starting copy of the later copy disk from the segment during reading, and, after the completion of reading data of the segment, performing writing into both the first copy disk and the later copy disk. - View Dependent Claims (6, 7)
-
-
8. A computer readable non-transitory recording medium embodying a program, the program causing a computer to perform a method, the computer connected to a master disk device that stores data into a plurality of segments continuously, and a plurality of copy disk devices that are copy destinations of the data, the method comprising:
-
receiving a copy instruction for one of the copy disk devices, and repeating reading and writing of each of the segments in order of address to complete copy, and, when a first copy disk that is the copy disk device other than a later copy disk that is the specified copy disk device is during copy when receiving the copy instruction, starting copy of the later copy disk from the segment during reading, and, after the completion of reading data of the segment, performing writing into both the first copy disk and the later copy disk. - View Dependent Claims (9)
-
Specification