Patent ID: 6223300
Filing Date: 2001-04-24
Classification: G06F

Abstract:
A disk array apparatus comprising:a plurality of storage devices accessed in parallel by said disk array apparatus, each of said storage devices including a data area established beforehand in units of a stripe size, a log storage area for accommodating logs of access to said storage devices, and a work area in which changing operation of said data area of said storage devices is carried out;access log storing means for storing the access logs to said log storage areas;access log analyzing means for analyzing trends of access to each of said storage devices on the basis of said access logs;array parameter judging and changing means for judging whether existing array parameters are valid on the basis of results of analysis from said access log analyzing means, said array parameter judging and changing means further establishing optimum array parameters to replace said existing array parameters if said existing array parameters are judged invalid; andreconstructing means for reconstructing said data area of each of said storage devices in accordance with said optimum array parameters established by said array parameter judging and changing means.