Patent ID: 8433868

Claim:
A method for concurrent copy of system configuration global metadata in a data storage system by a processor device, comprising: quiescing an entire global data rank of the data storage system; unquiescing the global data rank, except for a global metadata area of the global data rank; updating the global metadata area in memory; unquiescing the global metadata area of the global data rank of the data storage system; segmenting the global metadata area into a plurality of ranges appropriate for copying; selectin a current range from the plurality of ranges of the global metadata area to be copied; quiescing the selected current range of the global metadata area to be copied; copying the current range of the global metadata area from a source area to a target area; and unquiescing the current range and selecting an additional range from the plurality of ranges of the global metadata area to be copied until an entirety of the global metadata area has been copied.