Relocation target selection

A storage system comprising:

• a memory comprising computer-executable instructions;
• and
• a processor executing the computer-executable instructions, the computer-executable instructions when executed by the processor cause the processor to perform operations comprising:
• determining, in response to an efficiency indicator associated with a destination disk array of a plurality of destination disk arrays, to relocate at least a portion of data from a source Logical Unit (LUN) of a source disk array of a plurality of source disk arrays to the destination disk array, the efficiency indicator representing an amount of data on the source LUN that also resides on the destination disk array, wherein the destination disk array supports deduplication;
• evaluating multiple destination LUNs of the destination disk array to relocate the data to based on the efficiency indicator and at least one capacity-based factor corresponding to the multiple destination LUNs;
• selecting one of the multiple destination LUNs to relocate the data based on results of the evaluating;
• relocating the data from the source LUN to the selected one of the multiple destination LUNs;
• and
• ceasing use of the source LUN with respect to the relocated data subsequent to relocating the data from the source LUN to the selected one of the multiple destination LUNs.

A computer program product including a non-transitory computer readable storage medium having computer program code encoded thereon that when executed on a processor of a computer causes the computer to operate a storage system, the computer program code performing operations, the operations including:

• determining, in response to an efficiency indicator associated with a destination disk array of a plurality of destination disk arrays, to relocate at least a portion of data from a source Logical Unit (LUN) of a source disk array of a plurality of source disk arrays to the destination disk array, the efficiency indicator representing an amount of data on the source LUN that also resides on the destination disk array, wherein the destination disk array supports deduplication;
• evaluating multiple destination LUNs of the destination disk array to relocate the data to based on the efficiency indicator and at least one capacity-based factor corresponding to the multiple destination LUNs;
• selecting one of the multiple destination LUNs to relocate the data based on results of the evaluating;
• relocating the data from the source LUN to the selected one of the multiple destination LUNs;
• and
• ceasing use of the source LUN with respect to the relocated data subsequent to relocating the data from the source LUN to the selected one of the multiple destination LUNs.