STORAGE APPARATUS, CONTROLLING METHOD AND COMPUTER READABLE MEDIUM

摘要

A storage apparatus includes a plurality of disk apparatuses, a memory including a read buffer, and a processor. The processor is configured to perform a writing process, the writing process including writing a plurality of pieces of divided data into the plurality of disk apparatuses, interrupt, when a readout request for reading out series of data from the plurality of disk apparatuses is received during execution of the writing process, the writing process to a predetermined number of disk apparatuses from among the plurality of disk apparatuses, read out the pieces of data requested by the readout request from the predetermined number of disk apparatuses, store the read out pieces of data into the read buffer, reconstruct the pieces of data stored in the read buffer back into the series of data requested by the readout request, and output the reconstructed data.

主权项

1. A storage apparatus, comprising:
a plurality of disk apparatuses; a memory including a read buffer that is a region for temporarily storing data read out from the plurality of disk apparatuses; and a processor coupled to the memory and configured to:
perform a writing process, the writing process including generating a plurality of pieces of divided data, which is obtained by dividing a series of received data, and writing the plurality of pieces of divided data into the plurality of disk apparatuses,interrupt, when a readout request for reading out series of data from the plurality of disk apparatuses is received during execution of the writing process, the writing process to a predetermined number of disk apparatuses from among the plurality of disk apparatuses in which pieces of data requested by the readout request are stored,read out the pieces of data requested by the readout request from the predetermined number of disk apparatuses with which the writing process is interrupted,store the read out pieces of data into the read buffer,reconstruct, after all pieces of the data requested by the readout request are stored into the read buffer, the pieces of data stored in the read buffer back into the series of data requested by the readout request, andoutput the reconstructed data as a response to the readout request.