US 9,430,489 B2Granted

Computer, data storage method, and information processing system

AssigneeFujitsu Limited

InventorsKen Iizawa, Toshihiro Ozawa, Yasuo Noguchi, Kazuichi Oe, Munenori Maeda, Kazutaka Ogihara, Masahisa Tamura, Tatsuo Kumano, Jun Kato

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Abstract

A computer includes a memory that stores a program and received data; and a processor that executes an operation by executing the program stored in the memory, the operation including storing the received data into a first database having a first data structure in which reading is performed in a random access manner and writing is performed in a sequential access manner, when the received data is received from a second apparatus is as same as data stored in a first apparatus which has a failure, and copying the received data stored in the first database to a second database having a second data structure in which reading is performed in a sequential access manner and writing is performed in a random access manner.

Claims18

Dependent claims

A computer comprising:

a memory;
and
a processor coupled to the memory and configured to:
when a first apparatus fails and data, which is same as data that has been stored in the failed first apparatus, is received from a second apparatus, store the received data into a first database having a first data structure in which reading is performed in a random access manner and writing is performed in a sequential access manner;
and
copy the received data stored in the first database to a second database having a second data structure in which reading is performed in a sequential access manner and writing is performed in a random access manner,
wherein the processor is further configured to:
upon reception of an update request including new data to update a specified piece of the received data that is stored in the first database and that has not been copied to the second database, write the new data with which the specified piece of the received data is to be updated into the second database;
and
delete the specified piece of the received data stored in the first database.

7 more elements

A data storage method executed by a computer, the data storage method comprising:

when a first apparatus fails and data, which is same as data that has been stored in the failed first apparatus, is received from a second apparatus, storing the received data into a first database having a first data structure in which reading is performed in a random access manner and writing is performed in a sequential access manner;
and
copying the received data stored in the first database to a second database having a second data structure in which reading is performed in a sequential access manner and writing is performed in a random access manner,
wherein the method further comprises:
upon reception of an update request including new data to update a specified piece of the received data that is stored in the first database and that has not been copied to the second database, writing the new data with which the specified piece of the received data is to be updated into the second database;
and
deleting the specified piece of the received data stored in the first database.

4 more elements

A non-transitory computer-readable recording medium storing a program that causes a processor to execute an operation, the operation comprising:

when a first apparatus fails and data, which is same as data that has been stored in the failed first apparatus, is received from a second apparatus, storing the received data into a first database having a first data structure in which reading is performed in a random access manner and writing is performed in a sequential access manner;
and
copying the received data stored in the first database to a second database having a second data structure in which reading is performed in a sequential access manner and writing is performed in a random access manner,
wherein the operation further comprises:
upon reception of an update request including new data to update a specified piece of the received data that is stored in the first database and that has not been copied to the second database, writing the new data with which the specified piece of the received data is to be updated into the second database;
and
deleting the specified piece of the received data stored in the first database.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/850,379Filed 26 Mar 2013
Priority: JP 2012-11346617 May 2012
Published: US 2013/0311430 A121 Nov 2013
Granted: 30 Aug 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G06F 16/174
Details of further file system functions: redundancy elimination performed by the file system
G06F 11/1662
Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit: the resynchronized component or unit…
G06F 11/2035
Where processing functionality is redundant: without idle spare hardware
G06F 11/2094
Where persistent mass storage functionality or persistent mass storage control functionality is redundant: redundant storage or storage space