Storage apparatus having plural controller including interconnected memories
First Claim
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1. A storage apparatus system comprising:
- a plurality of controllers; and
a plurality of disk drives connected to said controllers,wherein each of said controllers comprises;
a first interface connected to a computer,a second interface connected to said disk drives, anda first memory connected to said first and second interfaces, andwherein said first memory of said controller is interconnected to other first memories of the other controllers by a first communication line, andwherein said first memory temporarily stores data which is written to or read from said disk drives via said first and second interfaces in response to an access request from said computer.
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Abstract
A disk array controller is made up of multiple disk array control units for implementing the data read/write operation and each having channel IF units, disk IF units, cache memory units and shared memory units. The disk array controller further includes inter connections for interconnecting the shared memory units and interconnecting the cache memory units across the border of disk array control units. Thereby alleviating the deterioration of performance due to the data transfer between the disk array control units, when the multiple disk array control units are to be operated as a single disk array controller.
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Citations
6 Claims
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1. A storage apparatus system comprising:
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a plurality of controllers; and a plurality of disk drives connected to said controllers, wherein each of said controllers comprises; a first interface connected to a computer, a second interface connected to said disk drives, and a first memory connected to said first and second interfaces, and wherein said first memory of said controller is interconnected to other first memories of the other controllers by a first communication line, and wherein said first memory temporarily stores data which is written to or read from said disk drives via said first and second interfaces in response to an access request from said computer. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification