forked from docs/doc-exports
Zaoxu, Li
305c41bb57
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: Zaoxu, Li <lizaoxu@huawei.com> Co-committed-by: Zaoxu, Li <lizaoxu@huawei.com>
21 lines
3.0 KiB
HTML
21 lines
3.0 KiB
HTML
<a name="evs_01_0020"></a><a name="evs_01_0020"></a>
|
|
|
|
<h1 class="topictitle1">EVS Replication (Deprecated)</h1>
|
|
<div id="body1508143935035"><div class="section" id="evs_01_0020__section29902489215657"><h4 class="sectiontitle">What Is EVS Replication</h4><div class="p" id="evs_01_0020__p47926742215446">If your services or disk data demands high reliability, you can use the cross-AZ replication feature provided by EVS. You can create a disaster recovery (DR) disk for a production disk in another AZ and use the production disk and DR disk to create an EVS replication pair. The data on these two disks will be consistent in real time. If a large number of physical resources in the primary AZ are faulty due to force majeure, you can use the DR disks in the secondary AZ to ensure the service availability and continuity.<ul id="evs_01_0020__ul62233304113137"><li id="evs_01_0020__li21251276113137">The server with the production disk attached is referred to as the production server, and the AZ containing the production server is the primary AZ.</li><li id="evs_01_0020__li1035516811323">The server with the DR disk attached is referred to as the DR server, and the AZ containing the DR server is the secondary AZ.</li></ul>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="evs_01_0020__section8885956105220"><h4 class="sectiontitle">Application Scenarios</h4><div class="p" id="evs_01_0020__p61492361154847">The replication function helps address your following needs:<ul id="evs_01_0020__ul66387467162033"><li id="evs_01_0020__li52606704104444">Data in DR disks is consistent with that in production disks in real time. You can perform a planned migration based on your service needs, that is, migrate the services from the primary AZ to the secondary AZ without data loss.</li><li id="evs_01_0020__li4165173011451">If large-scale physical resources in the primary AZ become faulty due to force majeure, you can use DR disks in the secondary AZ to lower the impact exerted on services.</li></ul>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="evs_01_0020__section30695838172854"><h4 class="sectiontitle">Usage Instructions</h4><p id="evs_01_0020__p1974279911734">For more use methods of EVS replication, see <a href="evs_01_0023.html">Managing EVS Replication (Deprecated)</a>.</p>
|
|
<div class="note" id="evs_01_0020__note14837103415812"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="evs_01_0020__p883713341981">EVS replication APIs have been deprecated. If you need to use the replication function, see <a href="https://docs.otc.t-systems.com/en-us/usermanual/sdrs/en-us_topic_0125068221.html" target="_blank" rel="noopener noreferrer">Storage Disaster Recovery Service User Guide</a> and <a href="https://docs.otc.t-systems.com/en-us/api/sdrs/sdrs_01_0000.html" target="_blank" rel="noopener noreferrer">Storage Disaster Recovery Service API Reference</a>.</p>
|
|
</div></div>
|
|
</div>
|
|
</div>
|
|
<div>
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="evs_01_0119.html">Overview</a></div>
|
|
</div>
|
|
</div>
|
|
|