摘要 |
<p>Chunks that commonly occur in each content type are aggregated in a first container. To be more specific, a storage device used for content backup is configured with: (1) a memory device that provides a memory region for one or a plurality of first containers used to store first chunks that commonly occur in each content type among chunks extracted from the contents of writing targets, and for one or a plurality of second containers used to store other chunks than the first chunks; and (2) a backup unit that decides whether each of the chunks extracted from the contents of the writing targets is a first duplication chunk duplicating a chunk stored in the first container, and further decides, for only a chunk that is decided not to be the first duplication chunk, whether each of the chunks is a second duplication chunk duplicating a chunk stored in the second container, and then stores only a chunk that is decided not to be the second duplication chunk in the second container.</p> |
申请人 |
HITACHI, LTD.;HITACHI INFORMATION & TELECOMMUNICATION ENGINEERING, LTD.;HAYASAKA, MITSUO;YAMASAKI, KOJI;TASHIRO, NAOMITSU |
发明人 |
HAYASAKA, MITSUO;YAMASAKI, KOJI;TASHIRO, NAOMITSU |