发明名称 |
Storage controller and duplicated data detection method using storage controller |
摘要 |
A storage controller of the present invention narrows down the target for data comparison by comparing hash codes beforehand and rapidly detects duplicated data. A hash value setting unit sets a hash code in data received from a host. Hash code-attached data is stored in a logical volume. A microprocessor unit compares the hash codes for each comparison-targeted data. When hash codes match with one another, a data comparator compares the target data, and determines whether or not the data is duplicated data. When duplicated data is detected, the microprocessor unit removes the duplicated data.
|
申请公布号 |
US8495288(B2) |
申请公布日期 |
2013.07.23 |
申请号 |
US20080136108 |
申请日期 |
2008.06.10 |
申请人 |
HOSOYA MUTSUMI;KANAYAMA HIROSHI;MINETA WATARU;HITACHI, LTD. |
发明人 |
HOSOYA MUTSUMI;KANAYAMA HIROSHI;MINETA WATARU |
分类号 |
G06F13/00;G06F12/00 |
主分类号 |
G06F13/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|