1. Computing

Discuss in my forum

Linux System Administrator's Guide

By


   Linux System Administrators Guide:
   Prev    Chapter 5. Using Disks and Other Storage Media    Next

5.3. Storage Area Networks - Draft

A SAN is a dedicated storage network that provides block level access to LUNs. A LUN, or logical unit number, is a virtual disk provided by the SAN. The system administrator the same access and rights to the LUN as if it were a disk directly attached to it. The administrator can partition, and format the disk in any means he or she chooses.

Two networking protocols commonly used in a SAN are fibre channel and iSCSI . A fibre channel network is very fast and is not burdened by the other network traffic in a company's LAN. However, it's very expensive. Fibre channel cards cost around $1000.00 USD each. They also require special fibre channel switches.

iSCSI is a newer technology that sends SCSI commands over a TCP/IP network. While this method may not be as fast as a Fibre Channel network, it does save money by using less expensive network hardware.

More To Be Added


   Prev    Home    Next
   Hard disks    Up    Network Attached Storage - Draft


* License

* Introduction to Linux Index

  1. About.com
  2. Computing
  3. Linux

©2014 About.com. All rights reserved.