Iscsi Optimization; Iscsi Optimization Overview - Dell Z9500 Configuration Manual

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Table of Contents

This chapter describes how to configure internet small computer system interface (iSCSI) optimization, which enables quality-

of-service (QoS) treatment for iSCSI traffic. The topics covered in this chapter include:

iSCSI Optimization

Default iSCSI Optimization Values

iSCSI Optimization Prerequisites

Configuring iSCSI Optimization

Displaying iSCSI Optimization Information

Default iSCSI Optimization Values

iSCSI Optimization Prerequisites

Configuring iSCSI Optimization

Displaying iSCSI Optimization Information

Enable and Disable iSCSI Optimization

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer

Monitoring iSCSI Traffic Flows

Information Monitored in iSCSI Traffic Flows

Detection and Auto-Configuration for Dell EqualLogic Arrays

Configuring Detection and Ports for Dell Compellent Arrays

Application of Quality of Service to iSCSI Traffic Flows

iSCSI Optimization Overview

iSCSI is a TCP/IP-based protocol for establishing and managing connections between IP-based storage devices and initiators in

a storage area network (SAN).

iSCSI optimization enables the network switch to auto-detect Dell's iSCSI storage arrays and triggers a self-configuration of

several key network configurations that enables optimization of the network for better storage traffic throughput. iSCSI is

disabled by default on the Z9500 platform.

iSCSI optimization also provides a means of monitoring iSCSI sessions and applying quality of service (QoS) policies on iSCSI

traffic. When enabled, iSCSI optimization allows a switch to monitor (snoop) the establishment and termination of iSCSI

connections. The switch uses the snooped information to detect iSCSI sessions and connections established through the

iSCSI optimization allows you to reduce deployment time and management complexity in data centers. In a data center

network, Dell EqualLogic and Compellent iSCSI storage arrays are connected to a converged Ethernet network using the data

center bridging exchange protocol (DCBx) through stacked and/or non-stacked Ethernet switches.

iSCSI session monitoring over virtual link trunking (VLT) synchronizes the iSCSI session information between the VLT peers,

allowing session information to be available in both the VLT peers. You can enable or disable iSCSI when you configure VLT.

iSCSI optimization functions as follows:

iSCSI Optimization