59 lines
3.3 KiB
HTML
59 lines
3.3 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="Comparison of standard mirroring and remote mirroring" />
|
|
<meta name="DC.Relation" scheme="URI" content="rzalyremote.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="hdrcompmir" />
|
|
<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>Comparison of standard mirroring and remote mirroring</title>
|
|
</head>
|
|
<body id="hdrcompmir"><a name="hdrcompmir"><!-- --></a>
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|
<h1 class="topictitle1">Comparison of standard mirroring and remote mirroring</h1>
|
|
<div><p>For the most part, the way you manage disk units with remote mirroring
|
|
is the same as how you manage disk units with standard mirroring. When you
|
|
add disk units, unprotected disk units must be added in pairs, as with general
|
|
mirroring. To achieve remote protection of all added units, half of the new
|
|
units of each capacity of disk unit should be in the remote group and half
|
|
in the local group. Single device-parity protected units may be added to disk
|
|
pools using remote mirroring. However, the disk pool is not protected against
|
|
a site disaster.</p>
|
|
<p>You will also see some differences when you Restore remote mirrored protection
|
|
after a recovery.</p>
|
|
<div class="section"><h4 class="sectiontitle">Restore remote mirrored protection after a recovery</h4><p>To
|
|
restore mirrored protection following the recovery procedures, you need to
|
|
perform the following steps: </p>
|
|
<ul><li>Obtain and physically attach all required disk units.</li>
|
|
<li>Stop or suspend mirrored protection if it is currently configured on the
|
|
system.</li>
|
|
<li>Add the new disk units to the correct disk pools.</li>
|
|
<li>Resume mirrored protection</li>
|
|
</ul>
|
|
<p>For detailed information about how to recover systems with mirrored
|
|
protection, see <a href="../books/sc415304.pdf" target="_blank">Backup
|
|
and Recovery </a> <img src="wbpdf.gif" alt="Link to PDF" />.</p>
|
|
</div>
|
|
</div>
|
|
<div>
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalyremote.htm">Remote disk unit mirroring support</a></div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html> |