Data storage device and operating method thereof
First Claim
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1. A data storage device comprising:
- a first memory device configured to store first data having a hot property;
a second memory device comprising a first block configured to store second data having a cold property and a second block configured to store third data transferred from the first memory device, wherein the second data and the third data are stored in different physical blocks of the second memory device; and
a request separator configured to classify data requested from outside into the first data having the hot property or the second data having the cold property, wherein the request separator comprises;
a first selection circuit configured to classify the requested data into the first data having the hot property or fourth data having the cold property according to a length of the requested data; and
a second selection circuit configured to reclassify the fourth data into fifth data having the hot property or the second data having the cold property according to a number of requests for a logical address corresponding to the requested data, the first data including the fifth data.
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Abstract
A data storage device includes a first memory device configured to store data having a first property, and a second memory device including a first block configured to store data having a second property and a second block configured to store data transferred from the first memory device.
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Citations
20 Claims
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1. A data storage device comprising:
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a first memory device configured to store first data having a hot property; a second memory device comprising a first block configured to store second data having a cold property and a second block configured to store third data transferred from the first memory device, wherein the second data and the third data are stored in different physical blocks of the second memory device; and a request separator configured to classify data requested from outside into the first data having the hot property or the second data having the cold property, wherein the request separator comprises; a first selection circuit configured to classify the requested data into the first data having the hot property or fourth data having the cold property according to a length of the requested data; and a second selection circuit configured to reclassify the fourth data into fifth data having the hot property or the second data having the cold property according to a number of requests for a logical address corresponding to the requested data, the first data including the fifth data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An operating method of a data storage device, the operating method comprising:
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storing first data having a hot property in a first memory device; storing second data having a cold property in a first block of a second memory device; storing third data transferred from the first memory device in a second block of the second memory device, wherein the second data and the third data are stored in different physical blocks of the second memory device; and classifying data requested from outside into the first data having the hot property or the second data having the cold property, wherein the classifying of the requested data comprises; a first step of classifying the requested data into the first data having the hot property or fourth data having the cold property according to a length of the requested data and a second step of reclassifying the fourth data into fifth data having the hot property or the second data having the cold property according to a number of requests for a logical address corresponding to the requested data, the first data including the fifth data. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification