![]() This guide will walk through a basic setup involving a simple iSCSI server ( target) and client ( initiator) both running Debian 9 (Stretch). So in other words, an ‘ Initiator‘ requests block storage from a ‘ Target‘. In iSCSI terminology, the server that is serving out the ‘ disk space‘ is known as an iSCSI ‘ Target‘ and the system that is requesting/utilizing the disk space is known as the iSCSI ‘ Initiator‘. iSCSI works in a client server model but uses different names to distinguish the client from the server. iSCSI is an Internet Protocol ( IP) based standard for providing block (hard drive) storage to other systems. This article will look at how a Debian 9 (Stretch) system can be setup to serve out disk space using a system known as Internet Small Computer Systems Interface or iSCSI for short. The Debian GNU/Linux distribution provides packages that allow a Debian system to serve the purpose of an enterprise level SAN storage device at a mere fraction of the cost! This allows everyone from basic home users or large data-centers to obtain the benefits of SAN storage without having to spend a fortune on a vendor proprietary solution. Many technologies have existed over the years that provide this functionality or similar functionality at a substantially cheaper price point. Realistically, these devices are nothing more than large hard disk arrays with a controller providing the space of those hard disks out to networked clients. Many of these specialized products are made by big name vendors such as Netapp, Dell Equalogic, HP Storageworks, or EMC and have price tags attached to them that only the largest of enterprises can afford. Most SAN hardware is comprised of a minimalistic controller (or set of controllers) and a large collection of high capacity drives all configured to support high amounts of data availability and integrity. As cloud providers and virtualization also continue to make massive impacts in the technology world, the need for even more SAN storage space has become evident. In the data center world, large capacity Storage Area Networks ( SAN) have become the minimum standard. ![]()
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