Reading Time: 2 minutes NVMe over Fabrics (NVMe-oF) is a perfect alternative to the tradition protocols (iSCSI, FC, iSER, SMB3, and NFS) used to access external enterprise storage. These protocols are good for SAS drives, but they are proven to be inefficient for NVMe flash devices because they are using legacy commands sets designed for generic drives. The new NVMe-oF use the same NVMe commands designed only for fast flash drivers.
Reading Time: < 1 minute The iSCSI Extensions for RDMA (iSER) is a computer network protocol that extends the Internet Small Computer System Interface (iSCSI) protocol to use Remote Direct Memory Access (RDMA). RDMA is provided by either the Transmission Control Protocol (TCP) with RDMA services (iWARP) that uses existing Ethernet setup and therefore no need of huge hardware investment, RoCE (RDMA over Converged Ethernet) that does not need the TCP layer and therefore provides lower latency, or InfiniBand.
Reading Time: 2 minutes Remote Direct Memory Access (RDMA) is an interesting way to improve network connections and bandwith by providing a direct memory access from the memory of one system into that of another. Compared to the full TCP/IP stack, RDMA can be managed without involving either one’s operating system (OS) and this means saving host resources and speed-up the communication. RDMA permits high-throughput and low-latencynetworking, but more important is becoming a common feature on some network card, and also supported by different OSes and hypervisors.
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