Storage system, control method, and power supply control circuit
By combining non-volatile and volatile memory in a storage system, and utilizing a power control circuit to switch voltage supply during power outages, the problem of increased backup power demand in the storage system is solved, achieving efficient power control and cost reduction during power outages.
CN115602206BActive Publication Date: 2026-06-05KIOXIA CORP
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- KIOXIA CORP
- Filing Date
- 2022-02-28
- Publication Date
- 2026-06-05
AI Technical Summary
Technical Problem
As storage system capacity increases, the demand for backup power also increases. How can we effectively control power consumption to ensure the non-volatile storage of data during power outages without increasing the number of energy storage devices?
Method used
A storage system combining non-volatile and volatile memory is used. The power supply is switched during power interruption by a power control circuit. The controller reads data from the volatile memory and writes it to the non-volatile memory, and shuts down the circuit after completion, reducing unnecessary power consumption.
Benefits of technology
It enables effective control of power consumption during power outages, reduces the need for energy storage devices, and lowers the cost and size of storage systems.
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Smart Images
Figure CN115602206B_ABST
Abstract
A storage system includes a nonvolatile first memory, a volatile second memory, a controller, a power supply control circuit that controls based on first power supplied from an external power supply to apply a first voltage to the first memory, the second memory, and the controller, and an electric power storage device that supplies second power to the power supply control circuit during a period when the first power from the external power supply is cut off. The power supply control circuit applies a second voltage based on the second power supplied from the electric power storage device to the first memory, the second memory, and the controller during a period when the first power supplied from the outside is cut off. The power supply control circuit stops applying the second voltage to the second memory after reading data from the second memory and before completion of writing of the data to the first memory.
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