STORAGE SYSTEM, CONTROLLER OF STORAGE SYSTEM, CONTROL METHOD OF STORAGE SYSTEM
First Claim
1. A storage system comprising:
- an interface that connects the storage system to a higher-level device;
a first storage unit that stores data which is transferred from the higher-level device through the interface;
a second storage unit onto which data stored in the first storage unit is copied;
a management table that manages the progress of the copy operation;
a monitoring section that monitors the operating state of the first storage unit;
a determination section that determines, in the case where the monitoring section detects occurrence of a failure in the first storage unit, that the access destination in the first storage unit specified by the higher-level device is accessible or not; and
a selection section that selects the access destination specified by the higher-level device based on the determination result of the determination section and progress managed by the management table.
1 Assignment
0 Petitions
Accused Products
Abstract
A storage system includes: an interface that connects the storage system to a higher-level device; a first storage unit that stores data which is transferred from the higher-level device through the interface; a second storage unit onto which data stored in the first storage unit is copied; a management table that manages the progress of the copy operation; a monitoring section that monitors the operating state of the first storage unit; a determination section that determines, in the case where the monitoring section detects occurrence of a failure in the first storage unit, that the access destination in the first storage unit specified by the higher-level device is accessible or not; and a selection section that selects the access destination specified by the higher-level device based on the determination result of the determination section and progress managed by the management table.
19 Citations
15 Claims
-
1. A storage system comprising:
-
an interface that connects the storage system to a higher-level device; a first storage unit that stores data which is transferred from the higher-level device through the interface; a second storage unit onto which data stored in the first storage unit is copied; a management table that manages the progress of the copy operation; a monitoring section that monitors the operating state of the first storage unit; a determination section that determines, in the case where the monitoring section detects occurrence of a failure in the first storage unit, that the access destination in the first storage unit specified by the higher-level device is accessible or not; and a selection section that selects the access destination specified by the higher-level device based on the determination result of the determination section and progress managed by the management table. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A controller of a storage system having a first storage unit that stores data which is transferred from a higher-level device through an interface connected to the higher-level device and a second storage unit onto which data stored in the first storage unit is copied, comprising:
-
a management table that manages the progress of the copy operation; a monitoring section that monitors the operating state of the first storage unit; a determination section that determines, in the case where the monitoring section detects occurrence of a failure in the first storage unit, that the access destination in the first storage unit specified by the higher-level device is accessible or not; and a selection section that selects the access destination specified by the higher-level device based on the determination result of the determination section and progress managed by the management table. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A control method of a storage system having a first storage unit that stores data which is transferred from a higher-level device through an interface connected to the higher-level device and a second storage unit onto which data stored in the first storage unit is copied, comprising:
-
a management step that manages the progress of the copy operation; a monitoring step that monitors the operating state of the first storage unit; a determination step that determines, in the case where the monitoring step detects occurrence of a failure in the first storage unit, that the access destination in the first storage unit specified by the higher-level device is accessible or not; and a selection step that selects the access destination specified by the higher-level device based on the determination result of the determination step and progress managed by the management table. - View Dependent Claims (12, 13, 14, 15)
-
Specification