Remote storage disk control device and method for controlling the same
First Claim
1. A storage system, comprising:
- a first storage device coupled to a first information processing device and having a first disk controller and a plurality of first disk drives, said first disk controller forming a first logical volume related to a first portion of said first disk drives and forming a second logical volume related to a second portion of said first disk drives; and
a second storage device coupled to said first storage device and having a second disk controller and a plurality of second disk drives, said second disk controller forming a third logical volume related to a third portion of said second disk drives and forming a fourth logical volume related to a fourth portion of said second disk drives;
wherein said first disk controller and said second disk controller manage functions of said first logical volume, said second logical volume, said third logical volume and said fourth logical volume,wherein said first disk controller and said second disk controller perform a first remote copy process according to a first status in whichsaid first logical volume functions as a primary logical volume which stores data sent from said first information processing device,said second logical volume functions as a logical volume which stores data, corresponding to updated data stored in said first logical volume as said primary logical volume and to be transferred to said second storage device,said third logical volume functions as a logical volume which stores data transferred from said first storage device, andsaid fourth logical volume functions as an auxiliary logical volume, which forms a pair relationship with said first logical volume as said primary logical volume and stores data corresponding to data stored in said first logical volume as said primary logical volume and being transferred to said fourth logical volume through said second logical volume and through said third logical volume,wherein said first disk controller and said second disk controller perform a second remote copy process according to a second status in whichsaid fourth logical volume functions as a primary logical volume which stores data,said third logical volume functions as a logical volume which stores data, corresponding to updated data stored in said fourth logical volume as said primary logical volume and to be transferred to said first storage device,said second logical volume functions as a logical volume which stores data transferred from said second storage device, andsaid first logical volume functions as an auxiliary logical volume, which forms a pair relationship with said fourth logical volume as said primary logical volume and stores data corresponding to data stored in said fourth logical volume as said primary logical volume, wherein data to be transferred to said fourth logical volume as said auxiliary logical volume is transferred through said third logical volume and through said second logical volume,wherein said first disk controller and said second disk controller are changed from said first status to said second status based on one or more commands.
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Abstract
A storage device system includes an information processing device, a first storage device equipped with a first storage volume, and a second storage device equipped with a second storage volume. The information processing device and the first storage device are communicatively connected to one another. Also, the first storage device and the second storage device are communicatively connected to one another. The information processing device is equipped with a first write request section that requests to write data in the first storage device according to a first communications protocol, and a second write request section that requests to write data in the second storage device according to a second communications protocol. The information processing device creates first data including a first instruction to be executed in the second storage device.
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Citations
29 Claims
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1. A storage system, comprising:
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a first storage device coupled to a first information processing device and having a first disk controller and a plurality of first disk drives, said first disk controller forming a first logical volume related to a first portion of said first disk drives and forming a second logical volume related to a second portion of said first disk drives; and a second storage device coupled to said first storage device and having a second disk controller and a plurality of second disk drives, said second disk controller forming a third logical volume related to a third portion of said second disk drives and forming a fourth logical volume related to a fourth portion of said second disk drives; wherein said first disk controller and said second disk controller manage functions of said first logical volume, said second logical volume, said third logical volume and said fourth logical volume, wherein said first disk controller and said second disk controller perform a first remote copy process according to a first status in which said first logical volume functions as a primary logical volume which stores data sent from said first information processing device, said second logical volume functions as a logical volume which stores data, corresponding to updated data stored in said first logical volume as said primary logical volume and to be transferred to said second storage device, said third logical volume functions as a logical volume which stores data transferred from said first storage device, and said fourth logical volume functions as an auxiliary logical volume, which forms a pair relationship with said first logical volume as said primary logical volume and stores data corresponding to data stored in said first logical volume as said primary logical volume and being transferred to said fourth logical volume through said second logical volume and through said third logical volume, wherein said first disk controller and said second disk controller perform a second remote copy process according to a second status in which said fourth logical volume functions as a primary logical volume which stores data, said third logical volume functions as a logical volume which stores data, corresponding to updated data stored in said fourth logical volume as said primary logical volume and to be transferred to said first storage device, said second logical volume functions as a logical volume which stores data transferred from said second storage device, and said first logical volume functions as an auxiliary logical volume, which forms a pair relationship with said fourth logical volume as said primary logical volume and stores data corresponding to data stored in said fourth logical volume as said primary logical volume, wherein data to be transferred to said fourth logical volume as said auxiliary logical volume is transferred through said third logical volume and through said second logical volume, wherein said first disk controller and said second disk controller are changed from said first status to said second status based on one or more commands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A storage system, comprising:
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a first storage device being adapted to be coupled to a first information processing device and having a first disk controller and a plurality of first disk drives, said first disk controller being adapted to form a first logical volume related to a first portion of said first disk drives and being adapted to form a second logical volume related to a second portion of said first disk drives; and a second storage device being adapted to be coupled to said first storage device and having a second disk controller and a plurality of second disk drives, said second disk controller being adapted to form a third logical volume related to a third portion of said second disk drives and being adapted to form a fourth logical volume related to a fourth portion of said second disk drives; wherein said first logical volume, as a primary logical volume, and said fourth logical volume, as an auxiliary logical volume, form a first pair relationship under a first remote copy process performed by said first disk controller and said second disk controller, wherein said fourth logical volume, as said primary logical volume, and said first logical volume, as said auxiliary logical volume, form a second pair relationship under a second remote copy process performed by said first disk controller and said second disk controller after swapping from the first pair relationship to said second pair relationship, wherein said second logical volume is adapted to be configured to store data transferred between said first logical volume and said fourth logical volume under each of said first remote copy process and said second remote copy process, and wherein said third logical volume is adapted to be configured to store data transferred between said first logical volume and said fourth logical volume under each of said first remote copy process and said second remote copy process. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A storage system, comprising:
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a first storage device being adapted to be coupled to a first information processing device and having a first disk controller and a plurality of first disk drives, said first disk controller being adapted to form a first logical volume related to a first portion of said first disk drives and being adapted to form a second logical volume related to a second portion of said first disk drives; and a second storage device being adapted to be coupled to said first storage device and having a second disk controller and a plurality of second disk drives, said second disk controller being adapted to form a third logical volume related to a third portion of said second disk drives and being adapted to form a fourth logical volume related to a fourth portion of said second disk drives; wherein said first logical volume, as a primary logical volume, and said fourth logical volume, as an auxiliary logical volume, form a first pair relationship under a first remote copy process performed by said first disk controller and said second disk controller, wherein said fourth logical volume, as said primary logical volume, and said first logical volume, as said auxiliary logical volume, form a second pair relationship under a second remote copy process performed by said first disk controller and said second disk controller after swapping from said first pair relationship to said second pair relationship, wherein said second logical volume is adapted to be configured to store data, corresponding to data stored in said first logical volume under said first remote copy process, and for configuring to store data, corresponding to data to be stored in said first logical volume under said second remote copy process, and wherein said third logical volume is adapted to be configured to store data, corresponding to data to be stored in said fourth logical volume under said first remote copy process, and is adapted to be configured to store data, corresponding to data stored in said fourth logical volume under said second remote copy process. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A storage system, comprising:
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a first storage device being adapted to be coupled to a first information processing device and having a first disk controller, said first disk controller being adapted to form a first logical volume and a second logical volume; and a second storage device being adapted to be coupled to said first storage device and having a second disk controller, said second disk controller being adapted to form a third logical volume and a fourth logical volume; wherein said first logical volume, as a primary logical volume, and said fourth logical volume, as an auxiliary logical volume, form a first pair relationship under a first remote copy process between said first storage device and said second storage device, wherein said fourth logical volume, as said primary logical volume, and said first logical volume, as said auxiliary logical volume, form a second pair relationship under a second remote copy process between said first storage device and said second storage device after swapping from said first pair relationship to said second pair relationship, wherein said second logical volume is adapted to be configured to store data, corresponding to data stored in said first logical volume under said first remote copy process, and wherein said third logical volume is adapted to be configured to store data, corresponding to data stored in said fourth logical volume under said second remote copy process. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification