Method, electronic device and computer program product for extending storage system

An electronic device, comprising:

• a processor;
• and
• a memory coupled to the processor, wherein the memory has instructions stored therein, and the instructions, when executed by the processor, cause the device to execute actions comprising:
• adding, in response to receiving a request to extend the storage system comprising a first storage resource pool, a second plurality of storage devices to the storage system, wherein the first storage resource pool is generated using a first plurality of storage devices and based on a first storage array standard, the first storage resource pool comprises a first plurality of stripes created using the first storage array standard, and the number of the second plurality of storage devices is equal to a first stripe width associated with the first storage array standard;
• creating a second storage resource pool using the second plurality of storage devices and based on a second storage array standard, wherein a second stripe width associated with the second storage array standard is equal to the first stripe width;
• creating a second plurality of stripes in the second storage resource pool using the second plurality of storage devices and based on the second storage array standard;
• and
• storing data of at least one stripe of the first plurality of stripes to a corresponding stripe of the second plurality of stripes according to a data shuffle rule.

An apparatus for extending a storage system, comprising:

• a storage device addition module configured to add, in response to receiving a request to extend the storage system comprising a first storage resource pool, a second plurality of storage devices to the storage system, wherein the first storage resource pool is generated using a first plurality of storage devices and based on a first storage array standard, the first storage resource pool comprises a first plurality of stripes created using the first storage array standard, and the number of the second plurality of storage devices is equal to a first stripe width associated with the first storage array standard;
• a storage resource pool creation module configured to create a second storage resource pool using the second plurality of storage devices and based on a second storage array standard, wherein a second stripe width associated with the second storage array standard is equal to the first stripe width;
• a stripe creation module configured to create a second plurality of stripes in the second storage resource pool using the second plurality of storage devices and based on the second storage array standard;
• and
• a data shuffle module configured to store data of at least one stripe of the first plurality of stripes to a corresponding stripe of the second plurality of stripes according to a data shuffle rule.

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

• the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of:
• adding, in response to receiving a request to extend the storage system comprising a first storage resource pool, a second plurality of storage devices to the storage system, wherein the first storage resource pool is generated using a first plurality of storage devices and based on a first storage array standard, the first storage resource pool comprises a first plurality of stripes created using the first storage array standard, and the number of the second plurality of storage devices is equal to a first stripe width associated with the first storage array standard;
• creating a second storage resource pool using the second plurality of storage devices and based on a second storage array standard, wherein a second stripe width associated with the second storage array standard is equal to the first stripe width;
• creating a second plurality of stripes in the second storage resource pool using the second plurality of storage devices and based on the second storage array standard;
• and
• storing data of at least one stripe of the first plurality of stripes to a corresponding stripe of the second plurality of stripes according to a data shuffle rule.