DATA PROTECTION FOR A COLD STORAGE SYSTEM

Title:

DATA PROTECTION FOR A COLD STORAGE SYSTEM

Document Type and Number:

WIPO Patent Application WO/2018/064928

Kind Code:

A1

Abstract:

A cold storage system includes data storage devices configured to store data blocks and parity storage devices configured to store protection blocks. The data storage devices and the parity storage devices form a multiple dimensional matrix having multiple rows and multiple columns. A controller receives a data write request to write a plurality of data blocks to the system. The controller selects a data storage device for storing the plurality of data blocks, and writes the data blocks sequentially into memory blocks of the selected data storage device, each data block belonging to a row stripe distributed over one row of the matrix and to a column stripe distributed over one column of the matrix. After the controller generates a row protection block for the row stripe and a column protection block for the column stripe, the controller writes the row protection block to a parity storage device in the row, and the column protection block to a parity storage device in the column. It operates the cold storage system by increasing protection ratio with less parity storage devices.

Inventors:

ZHU XIAOGANG (US)
MORTAZAVI MASOOD (US)

Application Number:

PCT/CN2017/101534

Publication Date:

April 12, 2018

Filing Date:

September 13, 2017

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HUAWEI TECH CO LTD (CN)

International Classes:

G06F3/06

Domestic Patent References:

WO2014111979A1	2014-07-24
WO2002008900A2	2002-01-31

Foreign References:

CN101976174A	2011-02-16
CN102081559A	2011-06-01
US20140089580A1	2014-03-27
US8316260B1	2012-11-20
US20050086575A1	2005-04-21
US6101615A	2000-08-08

Other References: