forked from docs/doc-exports
Wang , Deng Ke
04da47cae2
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: Wang , Deng Ke <wangdengke2@huawei.com> Co-committed-by: Wang , Deng Ke <wangdengke2@huawei.com>
22 lines
2.7 KiB
HTML
22 lines
2.7 KiB
HTML
<a name="opengauss_01_0063"></a><a name="opengauss_01_0063"></a>
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<h1 class="topictitle1">Working with Backups</h1>
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<div id="body1588227559370"><p id="opengauss_01_0063__a7f86cf95ddf54a3cb02221261db6b746"><span id="opengauss_01_0063__text1181945143915">GaussDB(openGauss)</span> supports <span class="keyword" id="opengauss_01_0063__keyword682075123915">backups and restorations</span> to ensure data reliability.</p>
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<div class="section" id="opengauss_01_0063__s68015014a508444280b565757ed67513"><h4 class="sectiontitle">Functions</h4><p id="opengauss_01_0063__a2ea7cb903a8c46788e255595a0ccfe58">Although <span id="opengauss_01_0063__text2099846912">GaussDB(openGauss)</span> supports high availability, if a database or table is maliciously or mistakenly deleted, data on the standby DB instance is also deleted. In this case, you can only restore the deleted data from backups.</p>
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<div class="section" id="opengauss_01_0063__s83575205ef954ef5af18b73aae55a065"><h4 class="sectiontitle">Automated Backups</h4><p id="opengauss_01_0063__a72ccac4adfcc4704b7a0bb220062a5ea">Backups are automatically created during the backup period of a <span id="opengauss_01_0063__text408264921">GaussDB(openGauss)</span> DB instance. <span id="opengauss_01_0063__text128791419872">GaussDB(openGauss)</span> saves automated backups based on the retention period you have specified. You can restore data from backups to any time point within the backup retention period. An automatic backup is triggered after CNs or shards are added.</p>
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<div class="section" id="opengauss_01_0063__s768f99880e89416dac1eee93969dc814"><h4 class="sectiontitle">Manual Backups</h4><p id="opengauss_01_0063__a1334febb8a4f4ed78dbda35f7247d67e"><span class="keyword" id="opengauss_01_0063__keyword9432101415163">Manual backups</span> are user-initiated full backups of DB instances. They are retained until you delete them manually.</p>
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<div class="section" id="opengauss_01_0063__sabbc8b62097849d8871e6d03f9a5c4d3"><h4 class="sectiontitle">Full Backups</h4><p id="opengauss_01_0063__a892901e752054322aa593ff36d51f81d">Full backup is to back up all selected data, even if no data is updated since the last backup.</p>
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<div class="section" id="opengauss_01_0063__sbf80031b64034904b1b83e0b3a6df887"><h4 class="sectiontitle">Incremental Backups</h4><p id="opengauss_01_0063__aed3761ea442a4335984f32376e54aad7">Incremental backups refer to differential backups. By default, <span id="opengauss_01_0063__text314542419404">GaussDB(openGauss)</span> automatically backs up the data updated since the last automated backup every 30 minutes. </p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="opengauss_01_0062.html">Backup and Restoration</a></div>
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