Patent ID: 8621163

Claim:
A management apparatus comprising: a stream storage configured to store a stream constituted by a plurality of pages; a trace information storage configured to store trace information in each stream, an extent and a write rule being correlated in the trace information, the extent being a set of continuous pages, the write rule indicating which the stream storage or a temporary storage the pages are to be written in, and the temporary storage temporary storing the pages to be written; a receiving unit configured to receive a request to write the pages constituting the stream; and a management unit configured to refer to the trace information on the stream to which the page of which the write request is received belongs, write the page into the stream storage when the write rule correlated with the extent to which the page belongs indicates that the page is to be written in the stream storage, write the page into the temporary storage when the write, rule indicates that the page is to be written in the temporary storage, and write the page that has been written in the temporary storage into the stream storage in units of extents at a predetermined timing.