Storage system and data restoration method thereof
First Claim
1. A storage system including a first storage sub system having a first logical volume where a first data area is dynamically allocated to each prescribed area, and which stores data transmitted from a host computer in said first data area, and a second storage sub system having a second data area for backing up said first logical volume;
- wherein said first storage sub system comprises;
a first management unit for managing the status of said first data area allocated to each of said areas of said first logical volume;
a transfer unit for transferring said data stored in said first data area allocated to each of said areas of said first logical volume to said second storage sub system; and
a restoration unit for restoring said first logical volume based on the status of said first data area managed by said first management unit and/or said data transferred from said second storage sub system.
1 Assignment
0 Petitions
Accused Products
Abstract
This storage system includes a first storage sub system having a first logical volume where a first data area is dynamically allocated to each prescribed area, and which stores data transmitted from a host computer in the first data area, and a second storage sub system having a second data area for backing up the first logical volume; wherein the first storage sub system includes: a first management unit for managing the status of the first data area allocated to each of the areas of the first logical volume; a transfer unit for transferring the data stored in the first data area allocated to each of the areas of the first logical volume to the second storage sub system; and a restoration unit for restoring the first logical volume based on the status of the first data area managed by the first management unit and/or the data transferred from the second storage sub system.
-
Citations
23 Claims
-
1. A storage system including a first storage sub system having a first logical volume where a first data area is dynamically allocated to each prescribed area, and which stores data transmitted from a host computer in said first data area, and a second storage sub system having a second data area for backing up said first logical volume;
-
wherein said first storage sub system comprises;
a first management unit for managing the status of said first data area allocated to each of said areas of said first logical volume;
a transfer unit for transferring said data stored in said first data area allocated to each of said areas of said first logical volume to said second storage sub system; and
a restoration unit for restoring said first logical volume based on the status of said first data area managed by said first management unit and/or said data transferred from said second storage sub system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A data restoration method of a storage system including a first storage sub system having a first logical volume where a first data area is dynamically allocated to each prescribed area, and which stores data transmitted from a host computer in said first data area, and a second storage sub system having a second data area for backing up said first logical volume, comprising:
-
a first step for managing the status of said first data area allocated to each of said areas of said first logical volume;
a second step for transferring said data stored in said first data area allocated to each of said areas of said first logical volume to said second storage sub system; and
a third step for restoring said first logical volume based on the status of said first data area managed at said first step and/or said data transferred from said second storage sub system. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
-
Specification