Method, electronic device and computer program product for managing disks

An electronic device, comprising:

• a processor;
• and
• a memory storing computer program instructions, the processor executing the computer program instructions in the memory to control the electronic device to perform acts, the acts comprising:
• in response to a number of a plurality of disks to be partitioned into disk sets being greater than a predetermined maximum number of disks per disk set, determining a plurality of candidate combinations of disks into disk sets;
• and
• selecting a target combination from the plurality of candidate combinations, the target combination including a first disk set of the disk sets and a second disk set of the disk sets, the first disk set of the target combination comprising at least a first subset of disks corresponding to a first disk array, the second disk set of the target combination comprising at least a second subset of disks corresponding to a second disk array, a number of disks in the first subset and a number of disks in the second subset being both equal to a first number and the disks in the first subset being different from the disks in the second subset, wherein a number of disks other than the first subset in the first disk set of the target combination is greater than or equal to the first number, and smaller than predetermined maximum number of disks.

A computer program product having a non-transitory computer readable medium which stores a set of instructions to manage disks;

• the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of:
• in response to a number of a plurality of disks to be partitioned into disk sets being greater than a predetermined maximum number of disks per disk set, determining a plurality of candidate combinations of disks into disk sets;
• and
• selecting a target combination from the plurality of candidate combinations, a first disk set of the target combination comprising at least a first subset of the first disk set corresponding to a first disk array, a second disk set of the target combination comprising at least a second subset of the second disk set corresponding to a second disk array, a number of disks in the first subset and a number of disks in the second subset being both equal to a first number and the disks in the first subset being different from the disks in the second subset, wherein selecting the target combination from the plurality of candidate combinations comprises:
• selecting a plurality of intermediate combinations from the plurality of candidate combinations, a disk set of each of the plurality of intermediate combinations comprising at least a first subset for that intermediate combination, and a further disk set of the intermediate combination comprising at least a second subset for that intermediate combination;
• calculating a first group of unavailable capacities for the respective first subsets for the plurality of intermediate combinations;
• and
• calculating a second group of unavailable capacities for the respective second subsets for the plurality of intermediate combinations.