![]() ![]() My Lab Setup :įor the lab setup, I am using 2 centos machines. Package : targetcli (Server) and iscsi-initiator-utils (Client)īlock device : /dev/sdb or /dev/sdc. Step2: Setup iSCSI Initiator/Client Prerequisites : This guide is fair enough to work for all the versions of RHEL/CentOS/Fedora with a few minimal changes in commands. This step-by-step guide will help you on how to configure the iSCSI target and initiator on RHEL/CentOS 7.6 Linux. Once the client application is connected to the server, then it will send the ISCSI commands to the iscsi server over the IP network. ![]() ISCSI Initiator: It is also known as iSCSI Client which is responsible for importing the LUNs which are exported by the iSCSI target/server. It provides security features like Authentication, Network, etc. It uses the iscsi protocol to interact with the clients using the IP network. It could be either a disk or a disk partition, LVM, Raid or a file. Each LUN has its back device attached to it and that device is the actual file that is exported and will be visible to the iSCSI initiator. We can also attach one or more LUNs for each target. We can create multiple targets in the iSCSI Server and each target has its own unique ID. ISCSI Target: This is also known as the iSCSI Server which is responsible for exporting disk/block devices to the iSCSI initiator/client. For Client, it uses "initiators" and for Server, it uses “targets”. It uses iSCSI components to communicate with each other. ISCSI handles client-server architecture. Most block-level storage devices have the capability of built-in work to share data across volume. Unlike Samba or NFS, which work at the file system level whereas iSCSI works only on the block-level device. iSCSI stands for (Internet Small Computer System Interface), which is an Industry standard protocol which is mainly used to share the storage device over the TCP/IP layer. This article will help you learn how to setup/configure iSCSI on Linux/Unix based systems. ![]()
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