Patent ID: 6553476
Filing Date: 2003-04-22
Classification: G06F,G11B,H04N

Abstract:
A storage apparatus comprising:an input means for inputting an input/output (I/O) request and an input/output (I/O) execution time prediction request transmitted from an external system; a determining means for predicting an execution time of said I/O request in response to receiving said I/O execution time prediction request; and a temporary memory divisible into a plurality of segments according to the type of said I/O request, wherein said determining means predicts the execution time of said I/O request on the basis of the result of: (1) a prediction of a current access time for a recording medium, (2) a prediction of an actual disk write time or read time for the recording medium and (3) a detection of a segment accumulation amount and a size of the corresponding segment, in response to said I/O execution time prediction request from said external system.