iSCSI vs NVMe over RDMA

Developers and system administrators should learn iSCSI when implementing scalable storage solutions, such as in virtualized data centers, cloud environments, or for disaster recovery setups, as it reduces costs by leveraging existing Ethernet networks instead of expensive Fibre Channel meets developers should learn nvme over rdma when building applications that require ultra-low latency and high-throughput storage access, such as in-memory databases, real-time analytics, or ai/ml workloads. Here's our take.

iSCSI

Nice Pick

Developers and system administrators should learn iSCSI when implementing scalable storage solutions, such as in virtualized data centers, cloud environments, or for disaster recovery setups, as it reduces costs by leveraging existing Ethernet networks instead of expensive Fibre Channel

Pros

• It is particularly useful for scenarios requiring high-performance block storage access over LANs or WANs, such as database hosting, virtual machine storage, or media streaming applications, where low latency and reliability are critical
• Related to: storage-area-network, fibre-channel

Cons

• Specific tradeoffs depend on your use case

NVMe over RDMA

Developers should learn NVMe over RDMA when building applications that require ultra-low latency and high-throughput storage access, such as in-memory databases, real-time analytics, or AI/ML workloads

Pros

• It is particularly useful in cloud-native and microservices architectures where storage needs to be decoupled from compute resources while maintaining performance
• Related to: nvme, rdma

Cons

• Specific tradeoffs depend on your use case

The Verdict

These tools serve different purposes. iSCSI is a protocol while NVMe over RDMA is a technology. We picked iSCSI based on overall popularity, but your choice depends on what you're building.

The Bottom Line

iSCSI wins

Based on overall popularity. iSCSI is more widely used, but NVMe over RDMA excels in its own space.