US 2019/0095109 A1Published application

Data storage system performance management

AssigneeInternational Business Machines Corporation

InventorXue Qiang Zhou

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Abstract

A computer system can dynamically manage the performance of a data storage system that includes sets of data storage devices. One set of the data storage devices can include read-intensive (RI) solid-state drives (SSDs). The computer system can detect, in response to a specified number of input/output operations per second (IOPS) of data contained on the RI SSDs exceeding the access density of the RI SSDs divided by the portion of data locations of the RI SSDs containing the data, a free area within the RI SSDs having space for additional data. Additional data within the data storage system that has a required access time less than a specified access time threshold and an access frequency less than a specified access frequency threshold can also be detected. In response, the detected additional data can be moved to the free area within the RI SSDs.

Claims18

Dependent claims

A computer-implemented method for dynamically managing performance of a data storage system of a computer system, the computer system including at least one computer processor circuit communicatively coupled to the data storage system, the data storage system including a first set of data storage devices, a second set of data storage devices that includes at least one read-intensive (RI) solid-state drive (SSD) and a third set of data storage devices, the computer system including at least one non-transitory computer-readable storage medium having program instructions embodied therewith, the program instructions executable by the at least one computer processor circuit to cause the at least one computer processor circuit to perform a method, the method comprising:

detecting, in response to a specified number of input/output operations per second (IOPS) of data contained on the second set of data storage devices exceeding an access density of the second set of data storage devices divided by a portion of data locations of the second set of data storage devices containing the data, a free area, within the second set of data storage devices, having space for additional data;
detecting, within the data storage system, additional data having a required access time that is less than a specified access time threshold, the additional data also having an access frequency that is less than a specified access frequency threshold;
and
moving, in response to the detecting of the free area having space for additional data, the detected additional data to the free area within the second set of data storage devices.

1 more element

A computer program product for dynamically managing performance of a data storage system of a computer system, the computer system including at least one computer processor circuit communicatively coupled to the data storage system, the data storage system including a first set of data storage devices, a second set of data storage devices that includes at least one read-intensive (RI) solid-state drive (SSD) and a third set of data storage devices, the computer program product comprising at least one non-transitory computer-readable storage medium having program instructions embodied therewith, the program instructions executable by at least one computer processor circuit to cause the at least one computer processor circuit to perform a method comprising:

detecting, in response to a specified number of input/output operations per second (IOPS) of data contained on the second set of data storage devices exceeding an access density of the second set of data storage devices divided by a portion of data locations of the second set of data storage devices containing the data, a free area, within the second set of data storage devices, having space for additional data;
detecting, within the data storage system, additional data having a required access time that is less than a specified access time threshold, the additional data also having an access frequency that is less than a specified access frequency threshold;
and
moving, in response to the detecting of the free area having space for additional data, the detected additional data to the free area within the second set of data storage devices.

1 more element

A computer system configured to dynamically manage performance of a data storage system of the computer system, the computer system comprising:

at least one computer processor circuit communicatively coupled to:
the data storage system, the data storage system including:
a first set of data storage devices;
a second set of data storage devices that includes at least one read-intensive (RI) solid-state drive (SSD);
and
a third set of data storage devices;
and
at least one non-transitory computer-readable storage medium having program instructions embodied therewith, the program instructions executable by the at least one computer processor circuit to cause the at least one computer processor circuit to:
detect, in response to a specified number of input/output operations per second (IOPS) of data contained on the second set of data storage devices exceeding an access density of the second set of data storage devices divided by a portion of data locations of the second set of data storage devices containing the data, a free area, within the second set of data storage devices, having space for additional data;
detect, within the data storage system, additional data having a required access time that is less than a specified access time threshold, the additional data also having an access frequency that is less than a specified access frequency threshold;
and
move, in response to the detecting of the free area having space for additional data, the detected additional data to the free area within the second set of data storage devices.

9 more elements

Dependencies are inferred from the claim text.