Title:
ストレージシステムおよびそのデータ制御方法
Document Type and Number:
Japanese Patent JP5543026
Kind Code:
B2
Abstract:
Package controller of a flash package, upon receiving an update data write request with respect to a first logical storage area corresponding to a first LU that is treated as a backup target, manages a first physical storage area as a backup storage area in a state where pre-update data is maintained, allocates a second physical storage area to the first logical storage area, and writes the update data to the second physical storage area. The package controller, upon receiving an update data write request with respect to a second logical storage area corresponding to a second LU that is treated as a non-backup target, manages a third physical storage area allocated to the second logical storage area as an invalid storage area, and writes the update data to a fourth physical storage area newly allocated to the second logical storage area.
Inventors:
登川 Takashi line
Shigeo Homma
Shigeo Homma
Application Number:
JP2013518028A
Publication Date:
July 09, 2014
Filing Date:
February 02, 2011
Export Citation:
Assignee:
Hitachi, Ltd.
International Classes:
G06F3/06; G06F3/08; G06F12/00; G06F12/02
Attorney, Agent or Firm:
Patent business corporation Wil photograph international patent firm