NVMe can be deployed and used in many ways, the following are some examples to show you its flexibility today as well as where it may be headed in the future. An initial deployment scenario is NVMe devices (e.g. PCIe cards, M2 or 8639 drives) installed as storage in servers or as back-end storage in storage systems. Figure 2 below shows a networked storage system or appliance that uses traditional server storage I/O interfaces and protocols for front-end access, however with back-end storage being all NVMe, or a hybrid of NVMe, SAS and SATA devices.
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