Method, apparatus and computer program product for managing storage system

An apparatus for managing a storage system, comprising:

• at least one processing unit;
• at least one memory coupled to the at least one processing unit and storing instructions for execution by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the apparatus to perform acts comprising:
• in response to receiving a request to add a first number of disks to a storage resource pool in the storage system, determining whether the first number of disks are to be added to the storage resource pool in a plurality of phases, wherein the storage resource pool includes at least one disk having a plurality of extents, and at least a part of the plurality of extents is included in at least one disk array group;
• in response to determining that the first number of disks are to be added to the storage resource pool in the plurality of phases including a first phase, determining a second number of disks to be added to the storage resource pool in the first phase;
• determining first information on a first disk array group to be created with the second number of disks in the first phase;
• and
• adding the second number of disks to the storage resource pool in the first phase by creating the first disk array group in the storage resource pool based on the first information.

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

• the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of:
• in response to receiving a request to add a first number of disks to a storage resource pool in the storage system, determining whether the first number of disks are to be added to the storage resource pool in a plurality of phases, wherein the storage resource pool includes at least one disk having a plurality of extents, and at least a part of the plurality of extents is included in at least one disk array group;
• in response to determining that the first number of disks are to be added to the storage resource pool in the plurality of phases including a first phase, determining a second number of disks to be added to the storage resource pool in the first phase;
• determining first information on a first disk array group to be created with the second number of disks in the first phase;
• and
• adding the second number of disks to the storage resource pool in the first phase by creating the first disk array group in the storage resource pool based on the first information.