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Let MindShare Bring "NVM Express over Fabrics (NVMe-oF)" to Life for You
MindShare's NVMe-oF (Non-Volatile Memory Express – over Fabrics) course begins with a brief review of NVMe basics, discusses the forces driving the migration of NVMe into network fabrics, followed by an overview of the different fabrics NVMe-oF will work over such as Ethernet, InfiniBand and Fibre Channel. Finally, the details of NVMe over fabrics are described.
MindShare Courses Related to NVMe:
All of MindShare's classroom and virtual classroom courses can be customized to fit the needs of your group.
NVM Express over Fabrics (NVMe-oF) Architecture Course Info
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You Will Learn:
- An overview of the storage fabrics in use today, and their strengths and weaknesses
- The changes needed for NVMe to work in a fabric environment
- How an NVMe host discovers and accesses drives on the fabric
- How NVMe-oF provides a combination of attractive features for a storage fabric
Who Should Attend?
This course is hardware-oriented, but is suitable for both hardware and software engineers because the registers used to control the hardware are described in detail. The course is ideal for RTL-, chip-, system- or system board-level design engineers who need a broad understanding of NVMe-oF.
Course Length: 1 Day
This course is hardware-oriented, but is suitable for both hardware and software engineers because the registers used to control the hardware are described in detail. The course is ideal for RTL-, chip-, system- or system board-level design engineers who need a broad understanding of NVMe-oF.
Course Outline:
- NVMe Background (as much as needed)
- NVMe basics: registers, queue management, commands and completions
- HCI shared-system-memory model
- NVMe over PCIe
- Introduction to NVMe-oF
- Motivation for moving NVMe to fabrics
- Improve storage network performance compared to legacy protocols
- Avoid limitations of PCIe, extend NVMe protocol to the fabric
- Optimize access latency across the network
- Differences from base NVMe
- Initialization Background
- Fabric Discovery
- Discovery Service, Discovery Controllers
- Discovery Mechanism
- NVMe-oF Initialization
- Fabrics Commands
- Device Setup
- Transport mapping/binding RDMA
- Introduction to RDMA (Remote Direct Memory Access)
- Protocol Translation
- RDMA Examples
- RDMA Concepts
- Motivation: Kernel bypass – reduce CPU involvement
- Zero-copy operation when possible
- RNIC (RDMA-aware Network Interface Card)
- Pinned remote memory and storage
- Command-based Flow Control
- Read and Write Command Examples
- NVMe-oF Details
- Controller Initialization
- Connections and Associations
- Static vs. Dynamic Controller model
- Properties instead of registers
- Authentication
- Encapsulation
- Accessing RDMA Queue pairs
- Data transfer: Command, Response, Data, Flow Control
- Fabrics Commands and Responses
- RNIC Details
- Software Layers
- RDMA Verbs
- Memory Regions and Windows
- Ethernet overview
- TCP/IP: addressing, layers, packets
- RDMA models added to it: RoCE and iWARP.
- Overview of iWARP
- Added to TCP/IP, so packets are routable and don’t need DCB
- Messages
- Layers
- Advantages and disadvantages
- Overview of RoCE
- Version 2 packets include routing information, version 1 did not
- Use of Data Center Bridging (DCB) to manage routing
- Flow control
- Soft RoCE
- Advantages and disadvantages
Recommended Prerequisites:
NVMe architecture knowledge and previous exposure to PCIe is needed, as is some general knowledge of PC architectures.
Supplied Materials:
- Downloadable PDF version of the presentation slides.
- Optional: Comprehensive NVMe 1.2a eLearning course
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