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US 2008/0270697 A1Published application
Storage system and information transfer method for the same
AssigneeHitachi, Ltd.
InventorsAtsushi Ueoka, Toshio Otani
Life of this patent
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Abstract
Before transferring a file, a CPU executes the following processing based on a transfer processing program: obtaining the directory tree structure of a transfer-source storage device; dividing the directory tree into directory trees so that each divided directory tree is structured within the full path length of a directory tree that can be handled by a transfer-destination storage device; associating the divided directory trees with each other; and then storing the associated directory trees in a volume of the transfer-destination storage device.
Claims11
A storage system comprising:
- a first storage device that includes a first file system;
- a second storage device that includes a second file system;
- and
- a control unit that controls transfer of a file stored in a storage area in the first storage device to a storage area in the second storage device, the control unit performing the following operations:
- collecting from the first storage device first information about a first management structure of the first file system;
- collecting from the second storage device second information about a second management structure of the second file system;
- comparing the first information with the second information and judging whether or not a first limit value for the first management structure exceeds a second limit value for the second management structure;
- and
- if the first limit value exceeds the second limit value, converting the first management structure so that the property of the first management structure does not exceed the second limit value, arranging the second file system so that it includes the converted management structure, and transferring the file stored in the first storage device to the second storage device, using the converted management structure included in the second file system.
6 more elements
A storage system information transfer method, the storage system including:
- a first storage device having a first file system;
- a second storage device having a second file system;
- and a control unit that is connected via a network to the first storage device and the second storage device and controls information transfer between the first storage device and the second storage device, the control unit controlling transfer of a file stored in a storage area of the first storage device to a storage area of the second storage device,
- the method comprising the following steps performed by the control unit:
- a first step of collecting first information about a first management structure of the first file system from the first storage device;
- a second step of collecting second information about a second management structure of the second file system from the second storage device;
- a third step of comparing the first information with the second information and judging whether or not a first limit value for the first management structure exceeds a second limit value for the second management structure;
- a fourth step of converting, if the first limit value exceeds the second limit value, the first management structure so that the property of the first management structure does not exceed the second limit value;
- and
- a fifth step of arranging the second file system so that it includes the management structure converted in the fourth step and transferring the file stored in the first storage device to the second storage device, using the converted management structure-included in the second file system.
7 more elements
A storage system information transfer method, the storage system including:
- a first storage device that provides at least one logical storage area via a network;
- a second storage device that provides at least one logical storage area via the network;
- and a host system that controls information transfer between the first storage device and the second storage device via the network, the host system controlling transfer of information stored in the logical storage area of the first storage device to the logical storage area of the second storage device,
- the method comprising the following steps performed by the host system:
- a first step of collecting via the network a structure of a directory tree created in the logical storage area of the first storage device;
- a second step of converting the structure of the directory tree collected in the first step so that it is structured within the maximum path length of a directory tree that can be handled by the second storage device;
- a third step of creating the directory tree converted in the second step in the logical storage area of the second storage device;
- and
- a fourth step of transferring a file stored in each directory tree of the logical storage area of the first storage device to the directory tree created in the third step.
6 more elements
Dependencies are inferred from the claim text.