55 lines
3.2 KiB
HTML
55 lines
3.2 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE html
|
|
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html lang="en-us" xml:lang="en-us">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<meta name="security" content="public" />
|
|
<meta name="Robots" content="index,follow" />
|
|
<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))' />
|
|
<meta name="DC.Type" content="topic" />
|
|
<meta name="DC.Title" content="Plan for storage capacity" />
|
|
<meta name="DC.Relation" scheme="URI" content="rzalymirror2.htm" />
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 2002, 2006" />
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2002, 2006" />
|
|
<meta name="DC.Format" content="XHTML" />
|
|
<meta name="DC.Identifier" content="hdrplnaspcap" />
|
|
<meta name="DC.Language" content="en-us" />
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
|
<!-- US Government Users Restricted Rights -->
|
|
<!-- Use, duplication or disclosure restricted by -->
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
|
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
|
|
<link rel="stylesheet" type="text/css" href="./ic.css" />
|
|
<title>Plan for storage capacity</title>
|
|
</head>
|
|
<body id="hdrplnaspcap"><a name="hdrplnaspcap"><!-- --></a>
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|
<h1 class="topictitle1">Plan for storage capacity</h1>
|
|
<div><p>For a new system, your IBM<sup>®</sup> marketing representative can help you analyze your
|
|
system storage requirements. For an existing system, the current amount of
|
|
data in the disk pool that is being planned is a useful starting point. The
|
|
Display Disk Configuration Capacity option of the dedicated service tools
|
|
(DST) or system service tools (SST) shows the total size (in millions of bytes)
|
|
and the percent of storage used for each disk pool on the system. Multiply
|
|
the size of the disk pools by the percent that is used to calculate the number
|
|
of megabytes of data currently in the disk pool. In planning future storage
|
|
requirements for a disk pool, system growth and performance should also be
|
|
considered.</p>
|
|
<p>The planned amount of data and the planned percent of storage used work
|
|
together to determine the amount of actual auxiliary storage needed for a
|
|
mirrored disk pool. For example, if a disk pool is to contain 1 GB (GB equals
|
|
1 073 741 824 bytes) of actual data, it requires 2 GB of storage for the mirrored
|
|
copies of the data. If 50% of storage use is planned for that disk pool, the
|
|
disk pool needs 4 GB of actual storage. If the planned percent of storage
|
|
that is used is 66%, 3 GB of actual storage are required. One gigabyte of
|
|
real data (2 GB of mirrored data) in a 5 GB disk pool results in a 40% auxiliary
|
|
storage utilization.</p>
|
|
</div>
|
|
<div>
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalymirror2.htm">Determine the disk units that are needed</a></div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html> |