A storage controller which uses the same buffer to store data elements retrieved from different secondary storage units. In an embodiment, the controller retrieves location descriptors ahead of when data is available for storing in a target memory. Each location descriptor indicates the memory locations at which data received from a secondary storage is to be stored. Only a subset of the location descriptors may be retrieved and stored ahead when processing each request. Due to such retrieval and storing of limited number of location descriptors, the size of a buffer used by the storage controller may be reduced. Due to retrieval of the location descriptors ahead, unneeded buffering of the data elements within the storage controller is avoided, reducing the latency in writing the data into the main memory, thus improving performance.

 
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