133 lines
8.6 KiB
HTML
133 lines
8.6 KiB
HTML
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<meta name="DC.Title" content="Make your hardware switchable" />
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<meta name="abstract" content="In a multisystem environment, you must make an external expansion unit switchable." />
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<title>Make your hardware switchable</title>
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<body id="rzalymakehardwareswitchable"><a name="rzalymakehardwareswitchable"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Make your hardware switchable</h1>
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<div><p>In a multisystem environment, you must make an external expansion
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unit switchable.</p>
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<p>When you are using independent disk pools in a switchable environment,
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the associated hardware must be authorized to switch as well. Depending on
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your environment, this can include frame/units or input/output processors
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(IOPs) and their associated resources. Refer to the following steps that apply
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to your switchable environment.</p>
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<div class="section"><h4 class="sectiontitle">Make a frame and unit switchable</h4><p>An independent
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disk pool can contain disk units within several expansion units (frame/units).
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If you have a stand-alone expansion unit that contains disk units included
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in an independent disk pool, you must authorize the expansion unit to grant
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access to other servers. This is called making an expansion unit switchable.
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If you do not want other servers to be able to access the stand-alone expansion
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unit, you must make the expansion unit private. </p>
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<div class="p">To make a frame/unit
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switchable, follow these steps: <ol><li>In iSeries™ Navigator,
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expand <span class="uicontrol">My Connections</span> (or your active environment). </li>
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<li>Expand any iSeries server. </li>
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<li>Expand <span class="menucascade"><span class="uicontrol">Configuration and Service</span> > <span class="uicontrol">Hardware</span> > <span class="uicontrol">Disk Units</span></span><span class="uicontrol">By Location</span> and
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select the frame/units you want to make switchable. </li>
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<li>Right-click a highlighted frame/unit and select <span class="uicontrol">Make Switchable</span>. </li>
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<li>Follow the instructions on the dialog box that is displayed.</li>
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</ol>
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</div>
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</div>
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<div class="section"><h4 class="sectiontitle">Change a bus ownership type</h4><p>To allow an IOP to be
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switched, the bus containing the IOP that controls the disk units to be switched
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must be <em>owned shared</em> by the primary node. The bus must also be <em>use
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bus shared</em> by the backup node. See <a href="../rzait/rzaitdynamic.htm">Dynamically switching IOPs between partitions</a> for more
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information.</p>
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<p>To complete this task, you need a Service Tools user profile
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with administration authority to the System Partitions function in dedicated
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service tools (DST). For more information about obtaining logical partition
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privileges, refer to <a href="../rzait/rzaitauthority.htm">Logical partition authority</a>. </p>
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<div class="p">To change the ownership
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type for a bus using Management Central, follow these steps:<ol><li> In iSeries Navigator,
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expand <span class="uicontrol">My Connections</span>. </li>
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<li>Select the primary partition of the system. </li>
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<li>Expand <span class="uicontrol">Configuration and Service</span> and select <span class="uicontrol">Logical
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Partitions</span>. </li>
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<li>Right-click the <span class="uicontrol">Logical Partition</span> and select <span class="uicontrol">Configure
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Partitions</span>. </li>
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<li>In the Configure Logical Partitions window, right-click the bus for which
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you want to change ownership and select <span class="uicontrol">Properties</span>. </li>
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<li>Select the <span class="uicontrol">Partitions</span> page. </li>
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<li>Select the partition that owns the bus in <span class="uicontrol">Owning logical partition</span>,
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and then select the ownership type in <span class="uicontrol">Sharing</span>. If
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the ownership type is shared, the partitions that share the bus appear in
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the list. Click Help if you need more information about these options.</li>
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<li> Click <span class="uicontrol">OK</span>.</li>
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</ol>
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</div>
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</div>
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<div class="section"><h4 class="sectiontitle">Create an I/O Pool using the Hardware Management Console</h4><p>If
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you are using the Hardware Management Console to manage your logical partitions,
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you must create an <a href="../icbase/iphbl/iphbliopools.htm">I/O pool</a> that includes the IOP, input/output adapter
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(IOA), and all attached resources to allow an independent disk pool to be
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switchable between partitions. You must grant access to each partition that
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you want to own the independent disk pool by assigning the I/O pool in each
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partition profile.</p>
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<div class="p">To create an I/O pool that can be switched between
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partitions, follow these steps:<ol><li>Open the Logical Partition Profile Properties window to <a href="../icbase/iphbl/iphblchangeprofile.htm">change partition
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profile properties</a> and assign resources to an I/O pool.</li>
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<li>Click the <span class="uicontrol">Physical I/O</span> tab.</li>
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<li>In the <span class="uicontrol">Profile I/O devices</span> column, expand the bus
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that contains the IOP that you want to make switchable.</li>
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<li>Select the IOP that you want to assign to an I/O pool. The IOP must be <em>desired</em> (no
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check mark in the <strong><span class="uicontrol">Required</span></strong> column).</li>
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<li>Click the I/O Pool column so that the cursor appears in the row of the
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IOP you want to assign to an I/O Pool, and type the number for the I/O pool.</li>
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<li>Repeat these steps to add each IOA and resource under the control of the
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IOP to the I/O pool.</li>
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<li>Click <span class="uicontrol">OK</span>.</li>
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</ol>
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</div>
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<div class="p">After you have added the resources to the I/O pool, complete the
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following steps to associate the I/O pool with each additional partition that
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you want to be able to own the independent disk pool in the switchable environment.<ol><li>Open the Logical Partition Profile Properties window to <a href="../icbase/iphbl/iphblchangeprofile.htm">change partition
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profile properties</a> for each additional partition that needs to access
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the independent disk pool.</li>
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<li>Click the <span class="uicontrol">Physical I/O</span> tab.</li>
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<li>Click <span class="uicontrol">Advanced</span>.</li>
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<li>On the I/O Pools window, in the <span class="uicontrol">I/O pools to add</span> field,
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type the number of the I/O pool to which you assigned the resources that you
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want to switch with the independent disk pool.</li>
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<li>Click <span class="uicontrol">Add</span>.</li>
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<li>Click <span class="uicontrol">OK</span>.</li>
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</ol>
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</div>
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<div class="p">For the I/O pool changes to take effect, you must complete the
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following steps for each partition whose partition profile was changed:<ol><li>Shut down the partition. See <a href="../icbase/iphbl/iphblrestartos400.htm" target="_blank">Restarting and shutting down i5/OS™ in a logical partition</a>.</li>
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<li>Start the logical partition by <a href="../icbase/iphbl/iphblactivate.htm" target="_blank">activating the partition profile</a> to reflect the changes.</li>
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</ol>
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</div>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalymanage.htm">Manage independent disk pools</a></div>
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</div>
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</div>
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</body>
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