STORAGE DEVICE CONTROLLING DEVICE, STORAGE DEVICE, STORAGE DEVICE CONTROLLING PROGRAM, AND STORAGE DEVICE CONTROLLING METHOD

• US 20100085658A1
• Filed: 09/28/2009
• Published: 04/08/2010
• Est. Priority Date: 03/29/2007
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Ueda, Takeshi, Fushimi, Yoshiki
• Application Number:
  US12/568,393
• Publication Number:
  US 20100085658A1
• Time in Patent Office: Days
• US Class Current: 360/75
• CPC Class Codes: G06F 11/2082 Data synchronisation
• CPC Class Codes: G06F 11/2087 with a common controller

Abstract

A storage device controlling device includes: a head sector generation section that creates predetermined information different from control information to be read out first from plural storage media; an input/output section that writes the control information into a head sector on the storage media; a reception section that receives an access request from outside; and a conversion section that converts a first sector number as a sector number on the plural storage media into a second sector number as a sector number other than that of the head sector on the plurality of storage media, based on a predetermined conversion method, the first sector number being designated by the access request, and the input/output section further accesses the plural storage media at the second sector number.

Claims

1. A storage device controlling device for controlling a storage device having a plurality of storage media, the device comprising:

a head sector write section that writes predetermined information into a head sector on each of the plurality of storage media, the predetermined information being different from control information to be read out first from the plurality of storage media; and

an access section that converts a first sector number indicating a sector on the plurality of storage media into a second sector number indicating a sector other than the head sector, and accesses the plurality of storage media at the second sector number, when an access request is received from outside of the storage device, and the first sector number being designated by the access request.

2. The storage device controlling device according to claim 1, wherein

the predetermined information is a code for executing error processing.

3. The storage device controlling device according to claim 2, wherein

the error processing is to display a predetermined message.

4. The storage device controlling device according to claim 1, wherein

the conversion of the sector number is performed by adding a predetermined numerical value to the first sector number.

5. The storage device controlling device according to claim 1, wherein

the conversion of the sector number is performed by subjecting the first sector number to predetermined encryption.

6. The storage device controlling device according to claim 5, further comprising

an encryption key obtaining section that obtains an encryption key, wherein

the conversion of the sector number is performed by subjecting the first sector number to encryption using the encryption key obtained by the encryption key obtaining section.

7. The storage device controlling device according to claim 1, wherein,

when initializing the plurality of storage media, the access section takes the first sector number as a second sector number of the head sector, and writes the control information to a second sector number obtained from the first sector number.

8. The storage device controlling device according to claim 7, wherein,

when starting up the storage device controlling device, the access section takes the first sector number as a sector number of the head sector, and reads the control information from the second sector number obtained from the first sector number.

9. A computer-readable medium having recorded thereon a storage device controlling program, which when executed by computer, causes the computer to execute a process comprising:

writing predetermined information into a head sector on each of a plurality of storage media in a storage device, the predetermined information being different from control information to be read out first from the plurality of storage media;

converting a first sector number as a sector number on the plurality of storage media into a second sector number as a sector number other than that of the head sector on the plurality of storage media, based on a predetermined conversion method, and accessing the plurality of storage media at the second sector number, the first sector number being designated by the access request, if an access request is received from outside.

10. The computer-readable medium according to claim 9, wherein

the predetermined information is a code for executing error processing.

11. The computer-readable medium according to claim 9, wherein

the conversion method is to obtain the second sector number by adding a predetermined numerical value to the first sector number.

12. The computer-readable medium according to claim 9, wherein

the conversion method is to obtain the second sector number by subjecting the first sector number to predetermined encryption.

13. The computer-readable medium according to claim 12, wherein

the storage device controlling program further causes a computer to execute a step that obtains an encryption key, and

the conversion method is to obtain the second sector number by subjecting the first sector number to encryption using the obtained encryption key.

14. The computer-readable medium according to claim 9, wherein

the storage device controlling program further causes a computer to execute a step that, when initializing the plurality of storage media, takes the first sector number as a second sector number of the head sector, and writes the control information to a second sector number obtained from the first sector number.

15. A storage device controlling method comprising:

writing predetermined information into a head sector on each of a plurality of storage media in a storage device, the predetermined information being different from control information to be read out first from the plurality of storage media;

converting a first sector number indicating a sector on the plurality of storage media into a second sector number indicating a sector other than the head sector on the plurality of storage media, when an access request is received from outside of the storage device, and the first sector number being designated by the access request; and

accessing the plurality of storage media at the second sector number.

16. The storage device controlling method according to claim 15, wherein

the predetermined information is a code for executing error processing.

17. The storage device controlling method according to claim 15, wherein

the second sector number is obtained by adding a predetermined numerical value to the first sector number.

18. The storage device controlling method according to claim 15, wherein

the second sector number is obtained by subjecting the first sector number to predetermined encryption.

19. The storage device controlling method according to claim 18 further comprising:

obtaining an encryption key, and

obtaining the second sector number by subjecting the first sector number to encryption using the obtained encryption key.