METHOD TO ALLOW STORAGE CACHE ACCELERATION WHEN THE SLOW TIER IS ON INDEPENDENT CONTROLLER
First Claim
1. A method for providing storage acceleration in a data storage system via a first storage controller of the data storage system, said method comprising:
- opening an Application Programming Interface (API) via the first storage controller, the first storage controller being connected to a first storage tier, the first storage tier including a solid-state drive (SSD);
receiving a query at the first storage controller, the query being provided to the first storage controller via a host mapper of the system, the query being generated based on a input/output (I/O) command issued by a host of the system, the query requesting read data; and
when the requested read data is at least one of;
located in a cache of the first storage controller, or located on the SSD connected to the first storage controller, retrieving the requested read data and providing the requested read data to the host mapper in response to the query.
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Accused Products
Abstract
The present invention is directed to a method for providing storage acceleration in a data storage system. In the data storage system described herein, multiple independent controllers may be utilized, such that a first storage controller may be connected to a first storage tier (ex.—a fast tier) which includes a solid-state drive, while a second storage controller may be connected to a second storage tier (ex.—a slower tier) which includes a hard disk drive. The accelerator functionality may be split between the host of the system and the first storage controller of the system (ex.—some of the accelerator functionality may be offloaded to the first storage controller) for promoting improved storage acceleration performance within the system.
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Citations
20 Claims
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1. A method for providing storage acceleration in a data storage system via a first storage controller of the data storage system, said method comprising:
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opening an Application Programming Interface (API) via the first storage controller, the first storage controller being connected to a first storage tier, the first storage tier including a solid-state drive (SSD); receiving a query at the first storage controller, the query being provided to the first storage controller via a host mapper of the system, the query being generated based on a input/output (I/O) command issued by a host of the system, the query requesting read data; and when the requested read data is at least one of;
located in a cache of the first storage controller, or located on the SSD connected to the first storage controller, retrieving the requested read data and providing the requested read data to the host mapper in response to the query. - View Dependent Claims (2, 3)
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4. A non-transitory, computer-readable medium having computer-executable instructions for performing a method for providing storage acceleration in a data storage system, said method comprising:
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generating a query via a host mapper of the system, the query being based on an input/output (I/O) command issued by a host of the system, the I/O command being a read command, the query including a request for read data; opening an Application Programming Interface (API) via a first storage controller of the system, the first storage controller being connected to a first storage tier, the first storage tier including a solid-state drive (SSD); providing the query to the first controller via the host mapper, the host mapper being connected to a host of the system; and receiving the query via the first controller. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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13. A non-transitory, computer-readable medium having computer-executable instructions for performing a method for providing storage acceleration in a data storage system, said method comprising:
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generating a query via a host mapper of the system, the query being based on an input/output (I/O) command issued by a host of the system, the I/O command being a read command, the query including a request for read data; opening an Application Programming Interface (API) via a first storage controller of the system, the first storage controller being connected to a first storage tier, the first storage tier including a solid-state drive (SSD); providing the query to the first controller via the host mapper, the host mapper being connected to a host of the system; receiving the query via a cache engine of the first controller; and when the requested read data is at least one of;
located in a cache of the first controller, or located on a SSD connected to the first controller, retrieving the requested read data and providing the requested read data to the host mapper in response to the query. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification