Emc IP Holding Company LLC

Xiaoliang Zhao

Liang Huang

Xianlong Liu

Ruipeng Yang

Yunfei Chen

Changyong Yu

Techniques for managing disks involve: determining a current usage parameter associated with each of a plurality of disk sets, the current usage parameter indicating usage associated with a capability of each of the plurality of disk sets, and the capability comprising at least one of the following: a number of permitted accesses per time unit and a number of permitted writes per time unit; imbalance degree associated with the plurality of disk sets, the first imbalance degree indicating a difference in the current usage parameters of the plurality of disk sets; and causing data in at least one disk slice of a first disk set to be moved to a second disk set of the plurality of disk sets, so as to lower down the first imbalance degree. In this way, a better balance can be achieved among performances of respective disks after adjustment.

Method, device and computer program product for managing disks

Techniques for managing disks involve determining, based on a parameter related to a capability of a plurality of disks, a reference capability parameter for each of the plurality of disks. In addition, the techniques involve determining a used capability parameter for each of the plurality of disks. Moreover, the techniques involve determining from the plurality of disks a first disk to be adjusted, a used capability parameter of the first disk exceeds a reference capability parameter of the first disk. The techniques further involve causing data of at least one disk slice in the first disk to be moved to a second disk of the plurality of disks, such that a difference between the used capability parameter of the first disk and reference capability parameter of the first disk is below a predetermined threshold. Accordingly, a balanced operation among respective storage disks can be achieved.

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Xiaoliang Zhao