STORAGE DEVICE

• US 20120311294A1
• Filed: 10/19/2010
• Published: 12/06/2012
• Est. Priority Date: 02/10/2010
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Noguchi, Yoshiaki
• Granted Patent: US 9,021,230 B2
• Time in Patent Office: Days
• US Class Current: 711/171
• CPC Class Codes: G06F 3/0608 Saving storage space on storage systems
• CPC Class Codes: G06F 3/0659 Command handling arrangements, e.g. command buffers, queues, command scheduling
• CPC Class Codes: G06F 3/0689 Disk arrays, e.g. RAID, JBOD

Abstract

A storage device includes: a temporary buffer for sequentially storing data configuring a file requested to be written for every reception from outside; a data writing means for immediately separating the data in the temporary buffer into mutually corresponding data portion and marker portion classified by preset criteria and storing into a data storing means in an associated state, and deleting from the temporary buffer; an unseparated data writing means for storing the data that cannot be separated into the data portion and the marker portion among the data in the temporary buffer, into an unseparated data storing means; and a re-separation processing means for separating the data in the unseparated data storing means into the data portion and the marker portion by preset criteria and storing into the data storing means with the data portion and the marker portion associated, and deleting from the unseparated data storing means.

Claims

1. A storage device, comprising:

a temporary buffer for sequentially and temporarily storing data configuring a predetermined capacity of file requested to be written every time the data is received from outside;

a data writing unit for immediately separating the data stored in the temporary buffer into a data portion and a marker portion corresponding to each other classified in accordance with previously set criteria and storing into a data storing unit so that the data portion and the marker portion are associated, and also deleting from the temporary buffer;

an unseparated data writing unit for storing the data that cannot be separated into the data portion and the marker portion corresponding to each other among the data stored in the temporary buffer, into an unseparated data storing unit; and

a re-separation processing unit for separating the data stored in the unseparated data storing unit into the data portion and the marker portion corresponding to each other in accordance with previously set criteria and storing into the data storing unit so that the data portion and the marker portion are associated, and also deleting from the unseparated data storing unit.

2. The storage device according to claim 1, wherein the unseparated data writing unit is configured to, when an available space in the temporary buffer is run out, store the data stored in the temporary buffer into the unseparated data storing unit, and also sequentially store the data received from outside into the unseparated data storing unit every time the data is received.

3. The storage device according to claim 2, wherein the re-separation processing unit is configured to operate after all of the data configuring the file are received from outside.

4. The storage device according to claim 1, wherein the unseparated data writing unit is configured to store effective length information representing a data amount of the data stored in the unseparated data storing unit.

5. The storage device according to claim 4, wherein:

the re-separation processing unit is configured to, when the data stored in the unseparated data storing unit is stored into the data storing unit, subtract a value of a data amount of the data from the effective length information; and

the temporary buffer is configured to, depending on a value of the effective length information, sequentially and temporarily store data received from outside.

6. The storage device according to claim 5, wherein the temporary buffer is configured to, in a case that the value of the effective length information is 0, sequentially and temporarily store data received from outside.

7. The storage device according to claim 1, comprising a data loading unit for, in response to a request to load the file from outside, loading the data configuring the file from the data storing unit or the unseparated data storing unit, in which the data is stored.

8. The storage device according to claim 1, wherein:

the data portion is data corresponding to a data content of the file; and

the marker portion is data changing depending on a situation when the file is stored.

9. A computer-readable storage medium that stores a program comprising instructions for causing an information processing device equipped with a temporary buffer for sequentially and temporarily storing data configuring a predetermined capacity of file requested to be written every time the data is received from outside, to realize:

a data writing unit for immediately separating the data stored in the temporary buffer into a data portion and a marker portion corresponding to each other classified in accordance with previously set criteria and storing into a data storing unit so that the data portion and the marker portion are associated, and also deleting from the temporary buffer;

an unseparated data writing unit for storing the data that cannot be separated into the data portion and the marker portion corresponding to each other among the data stored in the temporary buffer, into an unseparated data storing unit; and

a re-separation processing unit for separating the data stored in the unseparated data storing unit into the data portion and the marker portion corresponding to each other in accordance with previously set criteria and storing into the data storing unit so that the data portion and the marker portion are associated, and also deleting from the unseparated data storing unit.

10. A data processing method, comprising:

sequentially and temporarily storing data configuring a predetermined capacity of file requested to be written into a temporary buffer every time receiving the data from outside;

immediately separating the data stored in the temporary buffer into a data portion and a marker portion corresponding to each other classified in accordance with previously set criteria and storing into a data storing means so that the data portion and the marker portion are associated, and also deleting from the temporary buffer;

storing the data that cannot be separated into the data portion and the marker portion corresponding to each other among the data stored in the temporary buffer, into an unseparated data storing unit; and

separating the data stored in the unseparated data storing unit into the data portion and the marker portion corresponding to each other in accordance with previously set criteria and storing into the data storing unit so that the data portion and the marker portion are associated, and also deleting from the unseparated data storing unit.