Title:
ストレージシステム、及びストレージシステムにおけるスナップショットデータ作成方法
Document Type and Number:
Japanese Patent JP4583150
Kind Code:
B2
Abstract:
The present invention is devised so that snapshot data preparation processing does not end abnormally as a result of the pool region becoming full with saved data from the primary logical volume during snapshot data preparation. When the CHA receives a snapshot data preparation request, the CHA checks whether or not update information is present in the logical volume that is the object of this data preparation. If such information is present (YES in S51), a check is made of the updating amount count value in the update information in order to ascertain whether or not the updating amount count value is greater than a threshold value, in dependence on which either a physical snapshot or a logical snapshot is executed.
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Inventors:
Haruaki Watanabe
Application Number:
JP2004353153A
Publication Date:
November 17, 2010
Filing Date:
December 06, 2004
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G06F12/00; G06F3/06
Domestic Patent References:
| JP2002182988A | ||||
| JP2002278819A | ||||
| JP2004118413A | ||||
| JP2004342050A | ||||
| JP2006065622A |
Attorney, Agent or Firm:
Wilfort International Patent Office