69 lines
4.0 KiB
HTML
69 lines
4.0 KiB
HTML
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="DC.Title" content="Disk pools" />
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<title>Disk pools</title>
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</head>
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<body id="hdraspsovrvw"><a name="hdraspsovrvw"><!-- --></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">Disk pools</h1>
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<div><p>A disk pool, also referred to as an auxiliary storage pool (ASP) in the
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character-based interface, is a software definition of a group of disk units
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on your system. This means that a disk pool does not necessarily correspond
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to the physical arrangement of disks. Conceptually, each disk pool on your
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system is a separate pool of disk units for single-level storage. The system
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spreads data across the disk units within a disk pool. If a disk failure occurs,
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you need to recover only the data in the disk pool that contained the failed
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unit. </p>
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<p>Your system may have many disk units attached to it for disk pool storage.
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To your system, they look like a single unit of storage. The system spreads
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data across all disk units. You can use disk pools to separate your disk units
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into logical subsets. When you assign the disk units on your system to more
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than one disk pool, each disk pool can have different strategies for availability,
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backup and recovery, and performance.</p>
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<p>Disk pools provide a recovery advantage if the system experiences a disk
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unit failure resulting in data loss. If this occurs, recovery is only required
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for the objects in the disk pool that contained the failed disk unit. System
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objects and user objects in other disk pools are protected from the disk failure. </p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzalyaspsben.htm">Disk pool benefits</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalyaspscost.htm">Disk pool costs and limitations</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalyaspsxmp.htm">Disk pool uses</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalyiasptypes.htm">Types of disk pools</a></strong><br />
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</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalydmconcepts.htm" title="Learn about how disk storage works, how you can leverage disk pools in your environment. Protect your data with device parity protection and mirrored protection.">Disk management concepts</a></div>
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</div>
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</div>
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