Dell PowerEdge Express Flash NVMe PCIe SSD Manuale d'uso - Pagina 5

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Overview

The Dell PowerEdge Express Flash Non-Volatile Memory Express (NVMe) Peripheral Component

Interconnect Express (PCIe) Solid State Device (SSD) is a high performance storage device designed for

solutions requiring low latency, high I/O operations per second (IOPS), and enterprise class storage

reliability and serviceability. The Dell PowerEdge Express Flash NVMe PCIe SSD is offered as a Multi-Level

Cell (MLC) Negated AND or NOT AND (NAND) flash technology with a high-speed PCIe 3.0 compliant

interface. The high-speed PCIe 3.0 compliant interface helps improve performance for I/O bound

solutions.

NVMe is the standardized, high performance host controller interface designed for enterprise and client

systems that use solid state devices on a PCI Express bus (PCIe SSDs). Dell NVMe PCIe SSDs comply with

the NVMe 1.0 specification.

NOTE: The Dell PowerEdge Express Flash NVMe PCIe SSD is supported as a UEFI bootable device in

selected platforms and operating systems.

NVMe PCIe SSD Architecture

The Dell NVMe PCIe SSD solution consists of a PCIe extender adapter that provides PCIe connectivity for

up to four NVMe PCIe SSDs. The number of supported PCIe extender adapters and NVMe PCIe SSDs

depends on the system.

NVMe PCIe SSDs from Dell are available in 400 GB, 800 GB, or 1.6 TB (MLC) capacities and are supported

on Dell PowerEdge systems.

In Dell PowerEdge systems, up to two PCIe extender adapters connect to a PCIe SSD backplane, allowing

connectivity for up to eight NVMe PCIe SSDs. For example, four NVMe PCIe SSDs can be connected to

each PCIe extender adapter for a total maximum of eight NVMe PCIe SSDs.

NOTE: To determine the maximum number of NVMe PCIe SSDs supported on your system, and for

more information on extender adapters, see the system-specific Owner's Manual at dell.com/

support/manuals.

PCIe Interface

NOTE: The NVMe PCIe SSD maximum speed will vary based on the platform and extender adapter

or modular version.

The SSD controller used on the NVMe PCIe SSD has a PCIe Gen 3 (8 GT/s) interface. The interface is

available in a PCIe x4 lane width for a 16-channel flash memory controller. The PCIe interface is used to

transmit or receive storage interface commands between the host and the NVMe PCIe SSD.