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Server Message Block, or SMB, has been the default file

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sharing protocol in Windows for, again, as long as I've been in the industry,

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Windows Server 2022 continues to enhance Server Message Block

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version 3 and Server Message Block Direct.

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Now the use case for SMB Direct is speed.

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That is, as long as the servers who are communicating with each other,

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I'm going to say Windows Server 2022 boxes, have a hardware network interface

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that supports remote direct memory access, or RDMA, the use case is the

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acceleration that you can see in the CPU overhead is so low that the use case

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is you can connect with another server's RDMA‑enabled NIC and interact with

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their storage as if it's locally mounted.

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So, again, SMB Direct built‑in feature,

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it's enabled by default in Windows Server, and as long as your NICs,

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your network interfaces, are RDMA enabled as well,

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you can realize great performance gains in the

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networking subsystem in Windows Server.

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And then lastly, in Windows Server 2022, SMB Direct offers

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128 or 256‑bit AES packet encryption.

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Last thing, you should know a couple final points before we proceed, is

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that SMB Multichannel is the Microsoft product that's responsible for

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Windows Server detecting the RDMA state of its own NICs, as well as remote

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NICs that that Windows Server is communicating with, and you should also

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know that in the case of Hyper‑V, the SMB Direct feature is not exposed to your Hyper‑V guests, that is the VMs. This would be only at the hardware level.