Title:
RAID1系のRAIDグループを有するストレージ装置、及び、RAID1系のRAIDグループへの書込みの制御方法
Document Type and Number:
Japanese Patent JP5438820
Kind Code:
B2
Abstract:
A RAID group of RAID 1 series comprises one or more pairs of first storage devices and second storage devices. A storage apparatus reads data from the entire area of a first storage block group including the write destination of write target data in the first storage device. The storage apparatus, in accordance with the write target data and staging data which is the read data, generates one or more data units each of which is the data configured of the write target data or the copy of the same and the staging data part or the copy of the same and of the same size as the first storage block group. The controller writes any of the one or more data units to the first storage block group in the first storage device and, at the same time, writes any of the one or more data units to the second storage block group corresponding to the first storage block group and of the same size as the same in the second storage device.
More Like This:
Inventors:
Yusuke Nishihara
Matsui Yumitsu
Hiroshi Deda
Matsui Yumitsu
Hiroshi Deda
Application Number:
JP2012504134A
Publication Date:
March 12, 2014
Filing Date:
March 08, 2010
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G06F3/06
Domestic Patent References:
| JP2009129201A | 2009-06-11 | |||
| JP2008197864A | 2008-08-28 |
Attorney, Agent or Firm:
Wilfort International Patent Office