 amount of additional memory for unusual
         situations.  (Note: the working set is not the same as the number of
         pages accessed simultaneously, and is usually much larger.)
    </p>
      <p>
         The default cache size is 256KB, and may not be specified as less than
         20KB.  Any cache size less than 500MB is automatically increased by
         25% to account for buffer pool overhead; cache sizes larger than 500MB
         are used as specified.  The maximum size of a single cache 