NVMe SSD

Non-Volatile Memory Express（NVMe）テクノロジは、SATAインターフェイスと通信プロトコルのさまざまなボトルネックに対処するために2011年に導入されました。NVMeテクノロジーは、SATAバスの代わりにPCIeバスを利用して、ストレージデバイスの膨大な帯域幅の可能性を解き放ちます。PCIe 4.0（現在のバージョン）は最大32レーンを提供し、理論的には、SATAIIIの600MB /秒の仕様制限と比較して最大64,000MB /秒でデータを転送できます。NVMe仕様では、65535コマンドキューも許可されており、キューごとに最大65536コマンドを含めることができます。SATAベースのSSDは、キューあたり32コマンドの深さの単一キューに制限されていることを思い出してください。NVMeテクノロジーは、幅広いシステムでの効率、パフォーマンス、相互運用性の向上を通じて、ストレージデバイスに大きな可能性をもたらします。


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