STORAGE APPARATUS AND CONTROL METHOD THEREOF
First Claim
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1. A storage apparatus that provides to a host computer a logical device for storing data sent from said host computer, comprising:
- a nonvolatile memory for storing said data;
a hard disk drive (HDD) for storing said data; and
a controller for controlling said nonvolatile memory and said HDD,wherein said controller configures said logical device with a first logical volume corresponding to said nonvolatile memory and a second logical volume corresponding to said HDD, in which said first logical volume is a primary volume and said second logical volume is a secondary volume,wherein said controller controls to manage a power mode of said HDD and an operating time of said HDD in power on mode, andwherein if said controller receives an access request to said logical device from said host computer, said controller controls to read/write data from/to said first logical volume, power on of said HDD and asynchronously copy data from said first logical volume to said second logical at a predetermined time period.
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Abstract
This storage apparatus that provides to a host computer a logical device for storing data sent from the host computer includes a nonvolatile memory for storing the data, a disk-shaped memory device for storing the data, and a controller for controlling the nonvolatile memory and the disk-shaped memory device. The controller redundantly configures the logical device with the nonvolatile memory and the disk-shaped memory device.
19 Citations
10 Claims
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1. A storage apparatus that provides to a host computer a logical device for storing data sent from said host computer, comprising:
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a nonvolatile memory for storing said data; a hard disk drive (HDD) for storing said data; and a controller for controlling said nonvolatile memory and said HDD, wherein said controller configures said logical device with a first logical volume corresponding to said nonvolatile memory and a second logical volume corresponding to said HDD, in which said first logical volume is a primary volume and said second logical volume is a secondary volume, wherein said controller controls to manage a power mode of said HDD and an operating time of said HDD in power on mode, and wherein if said controller receives an access request to said logical device from said host computer, said controller controls to read/write data from/to said first logical volume, power on of said HDD and asynchronously copy data from said first logical volume to said second logical at a predetermined time period. - View Dependent Claims (2, 3, 4, 5)
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6. A control method of a storage apparatus that provides to a host computer a logical device for storing data sent from said host computer, comprising:
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configuring said logical device with a first logical volume corresponding to a nonvolatile memory and a second logical volume corresponding to a hard disk drive (HDD) by a controller, in which said first logical volume is a primary volume and said second logical volume is a secondary volume; and controlling to manage a power mode of said HDD and an operating time of said HDD in power on mode, wherein if an access request to said logical device from said host computer is received, said controller controls to read/write data from/to said first logical volume, power on of said HDD and asynchronously copy data from said first logical volume to said second logical at a predetermined time period. - View Dependent Claims (7, 8, 9, 10)
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Specification