iSCSI Setup Guide

ISCSI Setup Guide

iscsi protocol stack

iSCSI enables the transport of block-level storage traffic over IP networks. iSCSI is an end-to end protocol for transporting storage I/O block data over an IP Network.

Component of iSCSI

  • An iSCSI initiator:

An iSCSI initiator (iSCSI Client) is the software installed on the server or computer and configure to connect iSCSI target (iSCSI Server)

There are two types of initiator,

1 Software based initiator: is software or driver that handles all iSCSI requests and pairs with NIC driver and the SCSI driver together to make it work.

2. Hardware based initiator: is iSCSI HBA, Basically Ethernet card, which is specifically designed to work with iSCSI protocol.

An iSCSI Target:

A iSCSI Target is storage resource located on an iSCSI server called as target. Target represents nothing but disk storage or LUN.

  • Configure Target and Initiator
  1. Target

#yum -y install scsi-target-utils

# vi /etc/tgt/targets.conf

  1. Initiator

# yum install iscsi-initiator-utils

# vi /etc/iscsi/iscsid.conf

node.startup = automatic

#service iscsi start

#chkconfig iscsi on

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