from http://www.server-world.info/en/note?os=CentOS_6&p=iscsi A storage on a network is called iSCSI Target, a Client which connects to iSCSI Target is called iSCSI Initiator. This example is based on the environment below. +----------------------+ | +----------------------+ | [ iSCSI Target ] |10.0.0.30 | 10.0.0.31| [ iSCSI Initiator ] | | dlp.server.world +----------+----------+ www.server.world | | | | | +----------------------+ +----------------------+ [1] Install administration tools. [root@dlp ~]# yum -y install scsi-target-utils [2] Configure iSCSI Target . For example, create a disk image under the [/iscsi_disks] directory and set it as a shared disk. # create a disk image [root@dlp ~]# mkdir /iscsi_disks [root@dlp ~]# dd if=/dev/zero of=/iscsi_disks/disk01.img count=0 bs=1 seek=80G [root@dlp ~]# vi /etc/tgt/targets.conf # add follows to the end # if you set some devices, add <target>-</target> and set the same way with follows # naming rule : [ iqn.yaer-month.domain:any name ] <target iqn.2014-08.world.server:target00> # provided devicce as a iSCSI target backing-store /iscsi_disks/disk01.img # iSCSI Initiator's IP address you allow to connect initiator-address 10.0.0.31 # authentication info ( set anyone you like for "username", "password" ) incominguser username password </target> [root@dlp ~]# /etc/rc.d/init.d/tgtd start Starting SCSI target daemon: [ OK ] [root@dlp ~]# chkconfig tgtd on # confirm status [root@dlp ~]# tgtadm --mode target --op show Target 1: iqn.2014-08.world.server:target00 System information: Driver: iscsi State: ready I_T nexus information: LUN information: LUN: 0 Type: controller SCSI ID: IET 00010000 SCSI SN: beaf10 Size: 0 MB, Block size: 1 Online: Yes Removable media: No Prevent removal: No Readonly: No Backing store type: null Backing store path: None Backing store flags: LUN: 1 Type: disk SCSI ID: IET 00010001 SCSI SN: beaf11 Size: 85899 MB, Block size: 512 Online: Yes Removable media: No Prevent removal: No Readonly: No Backing store type: rdwr Backing store path: /iscsi_disks/disk01.img Backing store flags: Account information: username ACL information: 10.0.0.31