How to connect NAS to CentOS via iSCSI protocol

• Install Epel repository

yum install epel-release

• Install Iscsi-initiator utils

yum install iscsi-initiator-utils

• If you using CHAP authentification - edit /etc/iscsi/iscsid.conf

Uncomment next strings and add login/password

node.session.auth.authmethod = CHAP
node.session.auth.username = admin
node.session.auth.password = 123456

• Add service in auto-boot and start it

systemctl enable iscsid

systemctl start iscsid

• Search Iscsi-targets

iscsiadm -m discovery -t sendtargets -p 192.168.0.1 (where 192.168.0.1 - Iscsi-target IP address)

• Connect to Iscsi-target

iscsiadm -m node --login

• Check new disk in system

lsblk

• Marked-up a new disk

parted /dev/{} mktable gpt (where {} - your disk)
parted /dev/{} mkpart --primary ext4 1M -1
mkfs.ext4 -F -L TrassirArchive /dev/{}

• Check UUID of new disk

blkid

• Create a new folder in /media

mkdir /media/Foldername

• Mount new disk in /media/Foldername

mount /dev/{} /media/Foldername

• Add a new disk in /etc/fstab (as a new string)

UUID=XXXXX /media/Foldername ext4 _netdev,x-systemd.after=iscsi.service 0 0 (where XXXXX - UUID)

• Disable archive writing in /media/Foldername

chattr +i -VR /media/Foldername/