Title:
複数のデータ保存装置の混成集団においてオブジェクトを配分する方法と装置
Document Type and Number:
Japanese Patent JP4405806
Kind Code:
B2
Abstract:
Each object is cut into a number of blocks, and the different blocks are distributed in different storage devices according to a distribution law. In order to manage the distribution of blocks, a parameter is used called the flexibility coefficient is determined, linked to the popularity of different data blocks. The procedure provides distribution of objects, within a heterogeneous group of objects, in a data storage system. Each object is cut into a number of blocks, and the different blocks are distributed in different storage devices according to a distribution law. In order to manage the distribution of blocks, a parameter is used called the flexibility coefficient (CF(i)), representing the difference between the weights of parts of the object (i). Periodically values representative of the variability of the popularity of each object are measured and calculated. At a given time, t, a chosen flexibility coefficient (CFv(i)) is calculated from these values, and a real flexibility coefficient (CFr(i)) is also determined.
Inventors:
Abzuraziz
Gituni, Christoph
Gituni, Christoph
Application Number:
JP2003555381A
Publication Date:
January 27, 2010
Filing Date:
December 13, 2002
Export Citation:
Assignee:
STORAGENCY
International Classes:
G06F12/00; G06F17/30; G06F3/06
Domestic Patent References:
| JP4299747A | ||||
| JP4165541A | ||||
| JP1173236A |
Foreign References:
| US5333315 | ||||
| US6330621 |
Attorney, Agent or Firm:
Keiichi Ota