47 lines
2.9 KiB
HTML
47 lines
2.9 KiB
HTML
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<title>Example: Switchable expansion unit</title>
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<body id="rzalyexampleswitchabletower"><a name="rzalyexampleswitchabletower"><!-- --></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">Example: Switchable expansion unit</h1>
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<div><div class="fignone"><p>In this example, the following figure shows a cluster consisting of four
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nodes. Nodes named A, B, and C are defined to be in the same device domain.
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There are two switchable expansion units - one contains IASP33 and the other
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contains IASP34 and IASP35. The expansion unit containing IASP33 is on an
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HSL loop that also contains nodes A and B. This first expansion unit can
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be switched between nodes A and B. The expansion unit containing IASP34 and
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IASP35 can be on another HSL loop that also contains nodes B and C. This
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second expansion unit can be switched between nodes B and C. Node D is contained
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in the cluster, but is not a member of the device domain and therefore can
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only access IASP36, a stand-alone (or dedicated) independent disk pool.</p>
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<br /><img src="rzaly504.gif" alt="A cluster featuring two device CRGs, two switchable expansion units, and a stand-alone IASP." /><br /></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="rzalyswitchableiasps.htm">Examples: Switchable independent disk pools</a></div>
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