EOL PERFORMANCE THROTTLING TO PREVENT DATA LOSS
First Claim
Patent Images
1. A NAND memory device comprising:
- a NAND memory array including a first pool of memory; and
a controller, the controller executing instructions, to cause the controller to perform operations comprising;
monitoring a NAND device health metric;
determining that the NAND device health metric meets a degradation criteria indicating NAND device degradation has already occurred; and
responsive to determining that the NAND device health metric meets the degradation criteria, degrading a performance of the NAND memory device.
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Abstract
Disclosed in some examples are methods, systems, memory devices, machine readable mediums configured to intentionally degrade NAND performance when a value of a NAND health metric indicates a potential for failure to encourage users to replace or backup their devices before data loss occurs. For example, the system may track a NAND health metric and when that metric reaches a predetermined threshold or state, the system may intentionally degrade performance. This performance degradation may be more effective than a warning to effect device backup or replacement.
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Citations
21 Claims
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1. A NAND memory device comprising:
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a NAND memory array including a first pool of memory; and a controller, the controller executing instructions, to cause the controller to perform operations comprising; monitoring a NAND device health metric; determining that the NAND device health metric meets a degradation criteria indicating NAND device degradation has already occurred; and responsive to determining that the NAND device health metric meets the degradation criteria, degrading a performance of the NAND memory device. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10)
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6. The NAND memory device of claim I , wherein the operations of degrading the performance of the NAND memory device comprises introducing a delay before servicing a host request.
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11. A method comprising:
at a controller of a NAND memory device; monitoring a NAND device health metric of the NAND memory device; determining that the NAND device health metric meets a degradation criteria indicating NAND device degradation has already occurred; and responsive to determining that the NAND device health metric meets the degradation criteria, degrading a performance of the NAND memory device. - View Dependent Claims (12, 13, 14)
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15. The method of claim wherein degrading the performance of the NAND memory device comprises introducing a delay before servicing a host request.
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16. A machine-readable medium, comprising instructions, which when executed by a machine, causes the machine to perform operations comprising:
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at a controller of a NAND memory device; monitoring a NAND device health metric; determining that the NAND device health metric meets a degradation criteria indicating NAND device degradation has already occurred; and responsive to determining that the NAND device health metric meets the degradation criteria, degrading a performance of the NAND memory device. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification