摘要 |
<p>One code (a compressed redundant code) is created based on a plurality of first redundant codes, each created on the basis of a plurality of data units, and this compressed redundant code is written to a nonvolatile storage area. This compressed redundant code is used to restore either a data element constituting a multiple-failure data, or a first redundant code corresponding to the multiple-failure data, which is stored in an unreadable sub-storage area of a partially failed storage device, and to restore the data element constituting the multiple-failure data which is stored in a sub-storage area of a completely failed storage device, based on the restored either data element or first redundant code, and either another data element constituting the multiple-failure data or the first redundant code corresponding to the multiple-failure data.</p> |
申请人 |
HITACHI, LTD. |
发明人 |
KITAMURA, MANABU;OGAWA, JUNJI;KAWAMURA, SHUNJI;SATO, TAKAO;MATSUNAMI, NAOTO;ITO, SHINTARO;YOSHIHARA, TOMOHIRO;OGAWA, TAKUJI |