Patent ID: 6564295
Filing Date: 2003-05-13
Classification: G06F

Abstract:
A data storage array apparatus which comprises a plurality of data storage parts which store transferred data in accordance with a predetermined rule, an access issuance part, a group response monitoring part, an access response part, a continuous response monitoring part and an array operation control part, comprising:said access issuance part, by means of a predetermined algorithm, groups first access requests from a sender of said data into a group which includes second access requests directed to said more than one data storage parts, treats said group as a second access requesting group, and issues said second access requests included in said second access requesting group to said data storage parts based on access issuance control provided to said data storage parts by said array operation control part, said group response monitoring part individually manages each said second access requesting group, monitors processing responses, in said data storage parts, of said second access requesting group until said second access requesting group satisfies a predetermined condition, and issues a notice of completion of monitoring when said condition is satisfied, said access response part notifies said sender of said data of completion of accessing in response to a predetermined situation, said continuous response monitoring part classifies, for each data storage part, said second access requests of said second access requesting group which were met with no processing response from the data storage parts and further continuously monitors whether there are corresponding processing responses based on said notice of completion of monitoring thus issued, and issues a result of the monitoring as continuous response monitoring information, said array operation control part provides access issuance control for said data storage parts to said access issuance part based on said continuous response monitoring information thus issued, so that an operation mode of said data storage array apparatus as a whole is controlled.