Disk controlling apparatus and computer product
AssigneeFujitsu Limited
InventorsYukio Urata, Masaki Makifuchi
Life of this patent
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Abstract
A disk apparatus writes and rewrites data in a storage disk and reads data from the storage disk. A disk controlling apparatus that controls the disk apparatus includes an environment information creating unit creates environment information that is related to an environment of the disk apparatus, a storing unit that appends the environment information to the data that is to be written to the storage disk, and a rewrite process determining unit determines whether to execute a rewrite process based on the environment information in the data read from the storage disk.
Claims15
A disk controlling apparatus that controls a disk apparatus, comprising:
- a storage disk into which the disk apparatus writes and rewrites data and from which the disk apparatus reads data;
- an environment information creating unit that creates environment information that is related to an environment of the disk apparatus;
- a storing unit that appends the environment information created to data that is to be written to the storage disk;
- and
- a rewrite process determining unit that determines whether to execute a rewrite process for rewriting data in the storage disk based on the environment information in the data read from the storage disk.
A computer-readable recording medium, that records therein a computer program for controlling a disk apparatus that writes and rewrites data into a storage disk and reads data from the storage disk, the computer program including instructions which, when executed, cause a computer to execute:
- creating environment information that is related to an environment of the disk apparatus;
- appending the environment information created to the data that is to be written to the storage disk;
- and
- determining whether to execute a rewrite process based on the environment information in the data read from the storage disk.
A method of controlling a disk apparatus that writes and rewrites data into a storage disk and reads data from the storage disk, comprising:
- creating environment information that is related to an environment of the disk apparatus;
- appending the environment information created to the data that is to be written to the storage disk;
- and
- determining whether to execute a rewrite process based on the environment information in the data read from the storage disk.
Dependencies are inferred from the claim text.