65 lines
4.3 KiB
HTML
65 lines
4.3 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>Share an iSCSI HBA among multiple hosted servers</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="rzahqmanihbashar"></a>
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<h4 id="rzahqmanihbashar">Share an iSCSI HBA among multiple hosted servers</h4>
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<p>A single iSCSI HBA for iSeries™ may be able to handle the workload
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for several servers that do not require high bandwidth for the SCSI and virtual
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Ethernet LAN traffic. For example, you can share an iSCSI HBA for iSeries among several
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development and test servers if their workload is light.</p>
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<p>There are limits to the number of storage and virtual Ethernet paths that
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an iSCSI HBA can support. Each active server storage path will use a file
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server resource in the network server host adapter (NWSH) object that corresponds
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to the iSCSI HBA. Likewise, each active server virtual Ethernet path will
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use a virtual Ethernet resource in the NWSH object. There is a limit to the
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number of file server and virtual Ethernet resources supported by a particular
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NWSH, which limits how many active servers can use the NWSH.</p>
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<p>To see the NWSH file server and virtual Ethernet resource limits using iSeries Navigator, 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">iSCSI Connections</span>.</li>
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<li>Select <span class="bold">Local Host Adapters</span>.</li>
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<li>Right-click a NWSH 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">Resource Usage</span> tab.</li>
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<li>The table shows the active servers that are currently using the NWSH and
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the file server and virtual Ethernet resources that they are currently using.
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Below the table it shows how many file server and virtual Ethernet resources
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are still available for use by inactive servers and the total number of file
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server and virtual Ethernet resources that the NWSH supports.</li>
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<li>Click <span class="bold">Cancel</span> on the NWSH properties panel to close
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the panel.</li></ol>
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<p>If you want to use a CL command, see the WRKDEVD or DSPDEVD commands.</p>
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<p>There is also a less defined practical limit to the number of servers that
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an iSCSI HBA can support. The practical limit is determined by the available
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iSCSI HBA bandwidth and the workload that is being run through the iSCSI HBA.
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The practical limit will most likely limit how many hosted systems the iSCSI
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HBA can support before the file server and virtual Ethernet resource limits
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described above are reached. The practical limits will depend on your particular
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server configurations and workloads.</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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