Type of storage HBAs

HBAs (Host Bus Adapter) are just Nic cards for SAN that connects servers and storage to the SAN network.

There are three types of HBAs:-

A. Fibre channe HBAs :-

• It only supports native FC(fibre channel) traffic. 
• It supports 1/2/4/8/16 Gbps. 

B. iSCSI HBAs :-

• It offloads CPU from iSCSI read and writes.
• It is a normal Ethernet interface
• 1/10 Gbps supported

C. CNA (Converged Network Adapter) :-

• Used in FCOE ( Fibre channel over ethernet)
• It carries both ethernet and storage traffic together.