157 lines
10 KiB
HTML
157 lines
10 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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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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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Rolling upgrades" />
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<meta name="DC.Relation" scheme="URI" content="rzalygeographicmirror.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2002, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2002, 2006" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Rolling upgrades</title>
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</head>
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<body id="rzalyrollingupgrades"><a name="rzalyrollingupgrades"><!-- --></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">Rolling upgrades</h1>
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<div><p>Upgrades of i5/OS<sup>®</sup> releases
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made to any nodes involved in geographic mirroring require a rolling upgrade.
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The system will perform geographic mirroring from a V5R3M0 node owning the
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production copy to a V5R4M0 node owning the mirror copy. A rolling upgrade
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is required because a node at an earlier release might not be able to perform
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geographic mirroring to a node at a later release and a node at a later
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release usually cannot perform geographic mirroring to a node at an earlier
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release. This forces the nodes to be upgraded in an order dictated by the
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recovery domain order starting with the node that is the last backup. During
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the rolling upgrade, the production copy and mirroring copy will be moved
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to their recovery nodes.</p>
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<p>In the following example, four nodes at two sites supporting mutual takeover
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will be upgraded. Nodes A and B are on one site with nodes C and D at another
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site. Node A owns the production copy of independent disk pool 33, and node
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C owns the mirror copy of independent disk pool 33. Node C owns the production
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copy of independent disk pool 34, and node A owns the mirror copy of disk
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pool 34. </p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr class="tablemainheaderrow"><th class="oddrowblue" rowspan="3" align="center" valign="middle" width="42.600896860986545%" id="d0e26">Steps</th>
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<th class="oddrowblue" colspan="4" align="center" valign="top" id="d0e28">Recovery domain order</th>
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</tr>
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<tr class="tablemainheaderrow"><th class="oddrowblue" colspan="2" align="center" valign="top" id="d0e31">Independent disk pool 33</th>
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<th class="oddrowblue" colspan="2" align="center" valign="top" id="d0e33">Independent disk pool 34</th>
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</tr>
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<tr class="tablemainheaderrow"><th class="oddrowblue" align="center" valign="top" width="14.573991031390134%" id="d0e36">During</th>
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<th class="oddrowblue" align="center" valign="top" width="16.367713004484305%" id="d0e38">After</th>
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<th class="oddrowblue" align="center" valign="top" width="12.780269058295964%" id="d0e40">During</th>
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<th class="oddrowblue" align="center" valign="top" width="13.67713004484305%" id="d0e42">After</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">Initial </td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 "> </td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 ">A, B, C, D</td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 "> </td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">C, D, A, B</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">1. Upgrade node D</td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 ">A, B, C</td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 ">A, B, C, D</td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 ">C, A, B</td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">C, A, B, D</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">2. Upgrade node B</td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 ">A, C, D</td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 ">A, C, B, D</td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 ">C, A, D</td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">C, A, D, B</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">3. Switch production copy of independent ASP 34 (C to
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D) </td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 "> </td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 "> </td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 "> </td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">D</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">4. Switch mirror copy of independent ASP 34 (A to B)</td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 "> </td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 "> </td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 "> </td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">D, B</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">5. Switch mirror copy of independent ASP 33 (C to D) </td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 "> </td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 ">A, B, D</td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 "> </td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 "> </td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">6. Upgrade node C</td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 ">A, B, D </td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 "> A, B, D, C </td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 ">D, B</td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">D, C, B</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">7. Switch mirror copy of independent ASP 33 (D to C)</td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 "> </td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 ">A, B, C, D</td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 "> </td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">D, C, B</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">8. Switch prod copy of independent ASP 34 (D to C) </td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 "> </td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 ">A, B, C, D</td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 "> </td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">C, D, B</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">9. Switch production copy of independent ASP 33 (A to
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B)</td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 "> </td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 ">B, C, D</td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 "> </td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">C, D, B</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">10. Upgrade node A</td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 ">B, C, D</td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 ">B, A, C, D</td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 ">C, D, B</td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">C, D, B, A</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">11. Switch production copy of independent ASP 33 (B
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to A) </td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 "> </td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 ">A, B, C, D</td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 "> </td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">C, D, B, A</td>
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</tr>
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<tr><td valign="top" width="42.600896860986545%" headers="d0e26 ">12. Switch mirror copy of independent ASP 34 (B to
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A)</td>
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<td valign="top" width="14.573991031390134%" headers="d0e28 d0e31 d0e36 ">A, B, C, D</td>
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<td valign="top" width="16.367713004484305%" headers="d0e28 d0e31 d0e38 "> </td>
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<td valign="top" width="12.780269058295964%" headers="d0e28 d0e33 d0e40 "> </td>
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<td valign="top" width="13.67713004484305%" headers="d0e28 d0e33 d0e42 ">C, D, A, B</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>In step 3 of the table, notice that node A cannot mirror node D because
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node D is release n+1 while node A is still at release n. Therefore, the mirror
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copy for Independent ASP 34 is switched to node B which is now at release
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n+1. Steps 7, 11, and 12 (new numbers after added steps) are not strictly
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required and can be done later or omitted. They were done here to return the
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roles to their preferred owners.</p>
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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="rzalygeographicmirror.htm">Geographic mirroring</a></div>
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</div>
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</div>
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</body>
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</html>
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