1. A structured abrasive article comprising: an extensible base member; a three-dimensional element including abrasive particles and binder therefore; and a resin layer that binds the extensible base member and the three-dimensional element.
2. The structured abrasive article according to claim 1, wherein the resin layer is a layer made from resin that can be formed in a continuous layer even without a core material.
3. The structured abrasive article according to claim 1, wherein the resin layer is a layer made from resin having an elastic modulus at 25\xb0 C. in a range from 1.0\xd7106 to 1.0\xd7108 Pa.
4. The structured abrasive article according to claim 1, wherein the resin layer is tacky at 25\xb0 C.
5. The structured abrasive article according to claim 1, wherein the resin layer bonds the three-dimensional element and the extensible base member to form a film shape.
6. A method of manufacturing a structured abrasive article according to claim 2, comprising:
a filling step of filling a mold having a plurality of depressions with an abrasive material composition including abrasive particles and hardening resin;
a bonding step of bonding to the resin layer the abrasive material composition filled in the mold; and
a hardening step of hardening the abrasive material composition to form on the resin layer the three-dimensional element including the abrasive particles.
7. The structured abrasive article according to claim 1, wherein the extensible base member includes voids on a surface on the resin layer side, and the voids are filled with a resin that constitutes the resin layer.
8. A method of manufacturing a structured abrasive article according to claim 7 comprising:
an application step of applying a hardening resin composition to one surface of the extensible base member so as to fill the voids;
a resin layer forming step of forming the resin layer made from the resin composition by hardening the resin composition applied in the application step;
a filling step of filling a mold having a plurality of depressions with an abrasive material composition including abrasive particles and hardening resin;
a bonding step of bonding the abrasive material composition with which the mold has been filled to the resin layer; and
a hardening step of hardening the abrasive material composition and forming the three-dimensional element including the abrasive particles on the resin layer.
9. A method of manufacturing a structured abrasive article according to claim 7 comprising:
a first filling step of filling an abrasive material composition including abrasive particles and hardening resin into a mold having a plurality of depressions;
a second filling step of further filling the mold that has been filled with the abrasive material composition with a hardening resin composition;
a bonding step of bonding the resin composition that has been filled in the mold to one surface of the extensible base member, and filling the voids in the extensible base member with the resin composition; and
a hardening step of hardening the resin composition and the abrasive material composition, and forming on one surface of the extensible base member the resin layer made from the resin composition and the three-dimensional element including the abrasive particles.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of sharing data in a computer system, said computer system comprising a first computer, a second computer, and a storage system comprising a disk control unit, a first disk unit, a second disk unit, and a third disk unit, the method comprising:
forming a first duplex state between said first disk unit and said second disk unit, wherein said disk control unit, in response to a write request from said first computer, stores write data associated therewith to both said first disk unit and to said second disk unit, wherein said disk control unit, in response to a write request from said second computer, stores write data associated therewith to said third disk unit;
forming a simplex state and sending a first message from said first computer to said second computer indicating forming of said simplex state, wherein said disk control unit, in response to a write request from said first computer, stores write data associated therewith only to said first disk unit, wherein said disk control unit, in response to a write request from said second computer, stores write data associated therewith to said third disk unit;
subsequent to receiving said first message performing at said second computer a re-mapping operation between said second disk unit and said third disk unit; and
forming a second duplex state between said first disk unit and said third disk unit, wherein said disk control unit, in response to a write request from said first computer, stores write data associated therewith to both said first disk unit and to said third disk unit, wherein said disk control unit, in response to a write request from said second computer, stores write data associated therewith to said second disk unit.
2. A method of sharing data according to claim 1, further comprising forming a simplex state subsequent to forming said second duplex state, wherein said disk control unit, in response to a write request from said first computer, stores write data associated therewith only to said first disk unit, wherein said disk control unit, in response to a write request from said second computer, stores write data associated therewith to said third disk unit.
3. A method of sharing data in a computer system, said computer system comprising a first computer, a second computer, and a storage system comprising a disk control unit, a first disk unit, a second disk unit, a third disk unit, and a fourth disk unit, the method comprising:
forming a duplex state between said first disk unit and said second disk unit, wherein said disk control unit, in response to a write request from said first computer, stores write data associated therewith to both said first disk unit and to said second disk unit, wherein said disk control unit, in response to a write request from said second computer, stores write data associated therewith to said fourth disk unit;
forming a simplex state and sending a message from said first computer to said second computer indicating forming of said simplex state, wherein said disk control unit, in response to a write request from said first computer, stores write data associated therewith only to said first disk unit;
subsequent to receiving said first message, copying data stored in said second disk unit to said third disk unit and then performing at said second computer a re-mapping operation between said third disk unit and said fourth disk unit, wherein subsequent to said re-mapping said disk control unit accesses said third disk unit in response to IO requests from said second computer; and
re-forming said duplex state between said first disk unit and said second disk unit, wherein said disk control unit, in response to a subsequent write request from said first computer, stores write data associated therewith to both said first disk unit and to said second disk unit.
4. A method of sharing data according to claim 3, wherein said step of copying data includes steps of:
converting a first data format of data stored in said second disk unit to a second data format; and
storing said data according to said second data format to said fourth disk unit.
5. A method of sharing data according to claim 4, wherein said first data format is a count key data format and said second data format is a fixed-length block format.
6. A method of sharing data according to claim 3, wherein said computer system further comprises a processor coupled to said storage system, and said step of copying data is performed by said processor.
7. A method of sharing data in a computer system, said computer system comprising a first computer, a second computer, a first storage system coupled to said first computer and comprising a first disk unit and a first disk control unit, and a second storage system coupled to said second computer and comprising a second disk unit, a third disk unit, a fourth disk unit, and a second disk controller unit, wherein said first disk control unit and said second disk control unit are coupled via a network, the method comprising steps of:
forming a duplex state between said first disk unit and said second disk unit, wherein said first disk control unit, in response to a write request from said first computer, stores write data associated therewith to both said first disk unit and to said second disk unit, wherein said second disk control unit, in response to a write request from said second computer, stores write data associated therewith to said fourth disk unit;
terminating execution of applications in said first computer;
subsequent to said terminating, forming a simplex state, wherein said first disk control unit, in response to a write request from said first computer, stores write data associated therewith only to said first disk unit;
subsequent to said step of forming a simplex state, sending a message from said first computer to said second computer indicating said simplex state, wherein said second computer performs copying data stored in said second disk unit to said third disk unit and subsequent to said copying, performs a re-mapping between said third disk unit and said fourth disk unit so that said second disk control unit now accesses said third disk unit, in response to IO requests from said second computer; and
re-forming said duplex state between said first disk unit and said second disk unit, wherein said disk control unit, in response to a subsequent write request from said first computer, stores write data associated therewith to both said first disk unit and to said second disk unit.
8. A method of sharing data according to claim 7, wherein said step of copying data includes steps of:
converting a data format of data stored in said second disk unit to another data format; and
storing data according to said other data format to said third disk unit.
9. The storage system of claim 7, wherein data stored on said second disk unit is of a first data format and data stored on said third disk unit is of a second data format.
10. A storage system comprising:
a disk control unit; and
a plurality of disk units,
wherein said disk control unit is operable to form a duplex state between a first disk unit and a second disk unit, wherein data associated with a write request from a first computer is stored to both said first disk unit and to said second disk unit, wherein a third disk unit is accessed to service an IO request from a second computer,
wherein said disk control unit is further operable to form a simplex state between said first disk unit and said second disk unit, wherein data associated with a write request from said first computer is stored only to said first disk unit,
wherein during said simplex state, an application executing on said first computer sends a message to said second computer indicating forming of said simplex state, wherein data stored in said second disk unit is copied to a third disk unit,
wherein subsequent to data being copied from said second disk unit to said third disk unit, a re-mapping of said second disk unit and said third disk unit is performed so that said second disk unit is accessed to service subsequent IO requests from said second computer,
wherein another duplex state is formed between said first disk unit and said third disk unit so that data associated with subsequent write requests from said first computer are stored to both said first disk unit and to said third disk unit.
11. A storage system comprising:
a disk control unit; and
a plurality of disk units,
wherein said disk control unit is operable to form a duplex state between a first disk unit and a second disk unit, wherein data associated with a write request from a first computer is stored to both said first disk unit and to said second disk unit, wherein data associated with a write request from a second computer is stored to a fourth disk unit,
wherein said disk control unit is further operable to form a simplex state, wherein an application executing on said first computer sends a message to said second computer indicating forming of said simplex state, wherein data associated with a write request from said first computer is stored only to said first disk unit,
wherein during said simplex state, data stored in said second disk unit is copied to said third disk unit and subsequent to said copying, data associated with a write request from said second computer is stored to said third disk unit as a result of a re-mapping performed between said third disk unit and said fourth disk unit,
wherein said duplex state is re-formed between said first disk unit and said second disk unit.
12. The storage system of claim 11, wherein data stored on said second disk unit is of a first data format and data stored on said third disk unit is of a second data format.
13. The storage system of claim 12, wherein said first data format is a count key data format and said second data format is a fixed-length block format.
14. A storage system comprising:
a disk control unit;
a plurality of disk units; and
a network connecting at least some of said disk units,
said disk control unit being operable to copy data stored in a first disk unit to a second disk unit via said network,
said disk control unit being operable to form a duplex state between said first disk unit and said second disk unit, wherein data associated with a write request from a first computer is stored to both said first disk unit and to said second disk unit, wherein data associated with a write request from a second computer is stored to a third disk unit,
said disk control unit further being operable to form a simplex state, wherein an application executing on said first computer sends a message to said second computer indicating forming of said simplex state, wherein data associated with a write request from said first computer is stored only to said first disk unit,
wherein during said simplex state, data stored in said second disk unit is copied to a third disk unit and, subsequent to said copying, said second computer accesses said second disk unit as a result of a re-mapping performed between said second disk unit and said third disk unit,
wherein another duplex state is formed between said first disk unit and said third disk unit so that data in subsequent write requests from said first computer are stored in both said first disk unit and said third disk unit.