This comparison covers the performance, cost, and features of iSCSI and NFS storage protocols
Updated August 16, 2026
iSCSI
Best when block-level access is required, such as in virtualized environments or databases
NFS
Best when file-level access is sufficient, such as in file sharing or web serving
iSCSI offers higher performance and block-level access, making it a better choice for demanding workloads. While NFS is simpler to set up and less expensive, its lower performance and file-level access limitations make it less suitable for high-performance applications. As data centers continue to evolve, iSCSI's ability to support block-level access will remain essential.
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