| 摘要 |
<p>A storage system, comprising: (a) a primary storage entity utilized for persistently storing an entire data-set; (b) a secondary storage entity; and (c) a secondary storage controller ("SSC") responsive to a destage stream pending to be written to the second storage entity for identifying a succession of physical locations on the secondary storage entity formed by non-protected locations in an extent that is sufficient to accommodate the destage stream and one or more intervening protected locations between two or more of the non-protected locations; wherein said SSC is adapted to retrieve from said primary storage entity protected data associated with the intervening protected location(s), pad the stream of data with the protected data and write the padded stream of data to said secondary storage entity as a single successive write sequence over said succession of physical locations.</p> |
