Disk controlling apparatus and computer product
AssigneeFujitsu Limited
InventorsYukio Urata, Masaki Makifuchi
Life of this patent
Estimating the term…
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 includes at least information relating to a temperature inside the disk apparatus as one type of information relating to an environment of the disk apparatus, wherein the temperature is detected when the data is written;
- a storing unit that inputs the environment information in a wasteful data region that is generated when a byte of data is converted to a symbol of data, in which dummy data is stored, as data to be written to the storage disk instead of the dummy data, wherein each environmental information inputted and each data that corresponds to each environmental information are written into the storage disk in a correlated form, and the wasteful data region and the data are included in a symbol data generated by converting units of the data from bytes to symbols;
- 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 that corresponds to 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 includes at least information relating to a temperature inside the disk apparatus as one type of information relating to an environment of the disk apparatus, wherein the temperature is detected when the data is written;
- inputting the environment information in a wasteful data region that is generated when a byte of data is converted to a symbol of data, in which dummy data is stored, as data to be written to the storage disk instead of the dummy data, wherein each environmental information inputted and each data that corresponds to each environmental information are written into the storage disk in a correlated form, and the wasteful data region and the data are included in a symbol data generated by converting units of the data from bytes to symbols;
- and
- determining whether to execute a rewrite process based on the environment information that corresponds to 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 includes at least information relating to a temperature inside the disk apparatus as one type of information relating to an environment of the disk apparatus, wherein the temperature is detected when the data is written;
- inputting the environment information in a wasteful data region that is generated when a byte of data is converted to a symbol of data, in which dummy data is stored, as data to be written to the storage disk instead of the dummy data, wherein each environmental information inputted and each data that corresponds to each environmental information are written into the storage disk in a correlated form, and the wasteful data region and the data are included in a symbol data generated by converting units of the data from bytes to symbols;
- and
- determining whether to execute a rewrite process based on the environment information that corresponds to the data read from the storage disk.
Dependencies are inferred from the claim text.