84 lines
5.4 KiB
HTML
84 lines
5.4 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="dc.language" scheme="rfc1766" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<meta name="dc.date" scheme="iso8601" content="2005-09-13" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow"/>
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<title>Spreading workload over multiple iSCSI HBAs</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<img src="delta.gif" alt="Start of change" /><img src="delta.gif" alt="Start of change" /><img src="delta.gif" alt="Start of change" />
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<a name="rzahqmaniscsihbaspreading"></a>
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<h4 id="rzahqmaniscsihbaspreading">Spreading workload over multiple iSCSI HBAs</h4>
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<p>Servers that require high bandwidth may require more than one iSCSI HBA
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for iSeries™ to handle the workload. You can segment this even further by
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identifying which virtual disks and virtual Ethernet LANs require high bandwidth
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and which ones do not. For example, you can dedicate an iSCSI HBA to a disk
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that needs high bandwidth and share another iSCSI HBA among disks or other
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servers that do not require high bandwidth.</p>
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<p>The way you spread a server's SCSI and virtual Ethernet workload over
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multiple iSCSI HBAs is to define multiple storage or virtual Ethernet paths
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in the network server description (NWSD) and assign which virtual disks and
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which virtual Ethernets use each path.</p>
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<p>To define additional storage paths using iSeries Navigator, first shut down the server
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(see <a href="rzahqstartnstop.htm#rzahqstartnstop">Start and stop an integrated server</a>), then follow these steps:</p>
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<ol type="1">
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<li>Expand <span class="bold">Integrated Server Administration</span>.</li>
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<li>Expand <span class="bold">Servers</span>.</li>
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<li>Right-click a server from the list available.</li>
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<li>Select <span class="bold">Properties</span>.</li>
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<li>Click on the <span class="bold">Storage Paths</span> tab.</li>
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<li>Click the <span class="bold">Add</span> button to define a new storage path.</li>
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<li>Select the network server host adapter (NWSH) that corresponds to the
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iSCSI HBA that you want to use for the storage path.</li>
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<li>Click <span class="bold">OK</span> to add the storage path to the server properties
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panel.</li>
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<li>Make note of the path number that is assigned to the new path. The path
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number is used to identify this path when linking disks later on.</li>
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<li>Click <span class="bold">OK</span> on the server properties panel to save
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the new storage path in the NWSD.</li></ol>
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<p>If you want to use a CL command, see the STGPTH keyword on the CHGNWSD
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command.</p>
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<p>Now that the new storage path is defined, you need to re-link one or more
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of the server's virtual disks in order to use the new storage path.
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First unlink the disk (see <a href="rzahqunlpi.htm#rzahqunlpi">Unlink integrated Windows server disk drives</a>). Then link the disk
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to the server again (see <a href="rzahqlstpi.htm#rzahqlstpi">Link a disk drive to an integrated server</a>), using the new storage
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path number that was added above.</p>
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<p>To define additional virtual Ethernet paths using iSeries Navigator,
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first shut down the server (see <a href="rzahqstartnstop.htm#rzahqstartnstop">Start and stop an integrated server</a>), then follow
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these steps:</p>
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<ol type="1">
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<li>Expand <span class="bold">Integrated Server Administration</span>.</li>
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<li>Expand <span class="bold">Servers</span>.</li>
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<li>Right-click a server from the list available.</li>
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<li>Select <span class="bold">Properties</span>.</li>
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<li>Click on the <span class="bold">Virtual Ethernets</span> tab.</li>
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<li>Select the virtual Ethernet port that you want to use a new path for and
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click the <span class="bold">Properties</span> button.</li>
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<li>Select the NWSH that you want to use for the virtual Ethernet port.</li>
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<li>Click <span class="bold">OK</span> to update the virtual Ethernet port information
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about the server properties panel. The virtual Ethernet path for the port
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is implicitly updated as well.</li>
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<li>Click <span class="bold">OK</span> on the server properties panel to save
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the changes in the NWSD.</li></ol>
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<p>If you want to use a CL command, see the VRTETHPTH keyword on the CHGNWSD
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command.</p><img src="deltaend.gif" alt="End of change" /><img src="deltaend.gif" alt="End of change" /><img src="deltaend.gif" alt="End of change" />
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<a id="Bot_Of_Page" name="Bot_Of_Page"></a>
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</body>
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</html>
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