How to Create and Setup LUNs using LVM in “iSCSI Target Server” on RHEL/CentOS/Fedora – Part 2

LUN is a Logical Unit Number, which shared from the iSCSI Storage Server. The Physical drive of iSCSI target server shares its drive to initiator over TCP/IP network. A Collection of drives called LUNs to form a large storage as SAN (Storage Area Network). In real environment LUNs are defined in LVM, if so it can be expandable as per space requirements.

Create LUNS using LVM in Target Server

Why LUNS are Used?

LUNS used for storage purpose, SAN Storage’s are build with mostly Groups of LUNS to become a pool, LUNs are Chunks of a Physical disk from target server. We can use LUNS as our systems Physical Disk to install Operating systems, LUNS are used in Clusters, Virtual servers, SAN etc. The main purpose of Using LUNS in Virtual servers for OS storage purpose. LUNS performance and reliability will be according to which kind of disk we using while creating a Target storage server.

Requirements

To know about creating a ISCSI Target Server follow the below link.

1. Create Centralized Secure Storage using iSCSI Target – Part I

Master Server Setup

System information’s and Network setup are same as iSCSI Target Server as shown in Part – I, As we are defining LUNs in same server.

1. Operating System – CentOS release 6.5 (Final)
2. iSCSI Target IP – 192.168.0.200
3. Ports Used : TCP 860, 3260
4. Configuration file : /etc/tgt/targets.conf

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