JP2007026453A5 - - Google Patents

Claims (7)

A storage device used in connection with a host including a CPU for executing a program and an I / O controller for controlling information input / output,
The storage device includes one housing, a first nonvolatile storage device housed in the housing, a second nonvolatile storage device that operates at a higher speed than the first nonvolatile storage device, Control means, and
The writing and reading to the first and second nonvolatile storage devices are configured to be performed based on the same I / O interface standard,
The control means controls the writing of information transferred from the host to the second non-volatile storage device, and the first information stored in the second non-volatile storage device. A storage device configured to execute at least a function of controlling writing to a nonvolatile storage device. A storage device used in connection with a host including a CPU for executing a program and an I / O controller for controlling information input / output,
The storage device includes one housing, a first nonvolatile storage device housed in the housing, a second nonvolatile storage device that operates at a higher speed than the first nonvolatile storage device, Control means, and
The writing and reading to the first and second nonvolatile storage devices are configured to be performed based on the same I / O interface standard,
The control means has a function of controlling writing of information transferred from the host to the second nonvolatile storage device, and the information stored in the second nonvolatile storage device. A function for controlling writing to the nonvolatile storage device, a function for controlling storage of the file management information transferred from the host in the second nonvolatile storage device, and at the time of turning on / off the power to the host A storage device configured to execute at least a function of performing read / write control with reference to the file management information stored in the second nonvolatile storage device. Switch means for controlling connection with the power line of the host, a charge accumulating unit for accumulating charges when power is supplied from the host, and detecting power-off on the host side during operation of the storage device Power supply monitoring means,
When the power supply monitoring means detects the power-off on the host side, the switch means is operated to disconnect the storage device from the power supply line, and is stored in the charge storage unit until the power-off is detected. 3. The storage device according to claim 1, wherein the storage device is configured to perform control to write the file management information to the second nonvolatile storage device using a stored charge. 4. The system area executed or referred to by the host is double-stored in both the first and second nonvolatile storage devices. 5. Storage device. 5. The device according to claim 1, wherein the first nonvolatile storage device is a hard disk drive including a magnetic storage medium, and the second nonvolatile storage device is a flash memory. The storage device described. The storage device according to claim 1, wherein the I / O interface is configured to comply with the ATA standard. A storage device used in connection with a host including a CPU for executing a program and an I / O controller for controlling information input / output,
The storage device includes one casing, a first nonvolatile storage device including a magnetic storage medium and a hard disk drive that drives the medium, and a second nonvolatile storage including a flash memory. A storage device and control means;
The writing and reading to the first and second nonvolatile storage devices are configured to be performed based on the same I / O interface standard,
The control means has a function of controlling writing of information transferred from the host to the second nonvolatile storage device, and the information stored in the second nonvolatile storage device. A function for controlling writing to the non-volatile storage device, a function for controlling storage of file management information transferred from the host in the second non-volatile storage device, and the second when the host is powered on. A function of performing read control with reference to the file management information stored in the non-volatile storage device, and configured to execute at least
The storage device includes switch means for controlling connection with a power supply line of the host, a charge storage unit for storing charges when power is supplied from the host, and the host side during operation of the storage device Power supply monitoring means for detecting the power interruption of
When the power supply monitoring means detects the power-off on the host side, the switch means is operated to disconnect the storage device from the power supply line, and is stored in the charge storage unit until the power-off is detected. A storage device configured to perform control to write the file management information to the second nonvolatile storage device using the stored charge.