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US 2011/0035409 A1Published application
Hierarchical storage system and copy control method of file for hierarchical storage system
AssigneeHitachi, Ltd.
InventorsAkio SHIMADA, Etsutaro Akagawa, Hitoshi Kamei, Nobumitsu Takaoka, Atsushi Sutoh, Masakuni Agetsuma
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Abstract
An interface for controlling an inhibition of a recall is prepared for an application, and a judgment of necessity of a recall is informed of to a hierarchical storage before the application executes an access to a file.
Claims15
A hierarchical storage system comprising:
- a client computer;
- a first storage apparatus that is coupled to the client computer and that is provided with a first storage area;
- and
- a second storage apparatus that is coupled to the first storage apparatus and that is provided with a second storage area,
- wherein the first storage apparatus stores a file and a stub file that is provided with the information that indicates the stored location of a file that has been migrated from the first storage area and has been stored into the second storage area into the first storage area,
- wherein the first storage apparatus receives a direction that inhibits a copy of a file that is corresponded to the stub file into the first storage area from the client computer, and
- wherein, in the case in which the first storage apparatus receives an access request to the stub file that has received the copy inhibiting direction from the client computer, the first storage apparatus processes the access request to the file that is corresponded to the stub file and that has been stored into the second storage area and responds to the client computer.
4 more elements
A copy control method of a file for a hierarchical storage system comprising:
- a client computer;
- a first storage apparatus that is coupled to the client computer and that is provided with a first storage area;
- and
- a second storage apparatus that is coupled to the first storage apparatus and that is provided with a second storage area,
- wherein the first storage apparatus stores a file and a stub file that is provided with the information that indicates the stored location of a file that has been migrated from the first storage area and has been stored into the second storage area into the first storage area,
- the first storage apparatus receives a direction that inhibits a copy of a file that is corresponded to the stub file into the first storage area from the client computer, and
- in the case in which the first storage apparatus receives an access request to the stub file that has received the copy inhibiting direction from the client computer, the first storage apparatus processes the access request to the file that is corresponded to the stub file and that has been stored into the second storage area and responds to the client computer.
4 more elements
A hierarchical storage system comprising:
- a client computer;
- a first storage apparatus that is coupled to the client computer and that is provided with a first storage are and a memory;
- and
- a second storage apparatus that is coupled to the first storage apparatus and that is provided with a second storage area,
- wherein the first storage area has a small capacity and accesses at a high speed,
- the second storage area has a large capacity and accesses at a low speed,
- the first storage apparatus stores a file and a stub file that is provided with the information that indicates the stored location of a file that has been migrated from the first storage area and has been stored into the second storage area into the first storage area,
- the first storage apparatus judges whether a target of the access request from the client computer is the file or the stub file,
- the first storage apparatus receives a direction that inhibits a copy of a file that is corresponded to the stub file into the first storage area from the client computer,
- in the case in which the first storage apparatus receives an access request to the stub file that has received the copy inhibiting direction from the client computer, the first storage apparatus processes the access request to the file that is corresponded to the stub file and that has been stored into the second storage area, stores the file that is a target of the access request into the memory, and responds to the client computer,
- in the case in which the first storage apparatus receives an access request to the stub file that has not received the copy inhibiting direction from the client computer, the first storage apparatus copies the file that is corresponded to the stub file and that has been stored into the second storage area to the first storage area, processes the access request to the file that has been copied, and responds to the client computer,
- in the case in which the first storage apparatus receives an access request to the file that has been stored into the first storage area from the client computer, the first storage apparatus processes the access request to the file that has been stored into the first storage area, and responds to the client computer, and
- in the case in which the number of times of access requests to the stub file that has received the copy inhibiting direction from the client device is at least a certain number of times, the first storage apparatus copies the file that is corresponded to the stub file and that has been stored into the second storage area to the first storage area.
10 more elements
Dependencies are inferred from the claim text.