Both iSCSI and NFS are storage solutions that can leverage the existing TCP/IP network infrastructure. Hence, they are referred to as IP-based storage. Before we start learning how to configure them, let's delve into some iSCSI and NFS fundamentals.
iSCSI fundamentals
Internet Small Computer System Interface (iSCSI) is a protocol used to transport SCSI command over a TCP/IP network. In an iSCSI environment, the server or the host uses iSCSI initiators (hardware/software) to connect to iSCSI targets on an iSCSI storage system. This is detailed in the following list:
iSCSI initiator: An iSCSI initiator can be either a software or hardware iSCSI adapter that connects to an iSCSI target. The hardware iSCSI adapter can further be dependent or independent. Dependent hardware iSCSI will reply on ESXi for network configuration and management. However, independent will handle both the network configuration and management and the packet processing. The initiator or Host Bus Adapter ...