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Hybrid solid state drive (SSD) using PCM or other high performance solid-state memory

  • US 9,696,934 B2
  • Filed: 02/12/2015
  • Issued: 07/04/2017
  • Est. Priority Date: 02/12/2015
  • Status: Active Grant
First Claim
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1. A hybrid memory system comprising:

  • a first non-volatile memory, the first non-volatile memory being a first type of non-volatile memory;

    a second non-volatile memory, the second non-volatile memory being a second type of non-volatile memory different from the first type of non-volatile memory; and

    a memory controller configured to;

    analyze a type of a first operation and a characteristic of the first operation,determine a state of the second non-volatile memory,determine whether a second operation is being implemented on the second non-volatile memory,selectively implement the first operation on one of the first non-volatile memory and the second non-volatile memory based on the type of the first operation, the characteristic of the first operation, the state of the second non-volatile memory, and whether the second operation is being implemented on the second non-volatile memory,determine that the type of the first operation is a write operation;

    determine that the characteristic of the first operation is an amount of data associated with the first operation;

    determine that the amount of data associated with the first operation is less than a predetermined threshold; and

    cache the data associated with the first operation in the first non-volatile memory based on the determination that the amount of data associated with the first operation is less than the predetermined threshold;

    wherein the memory controller is configured to implement the first operation on the first non-volatile memory concurrently with the second operation being implemented on the second non-volatile memory based on the type of the first operation.

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