forked from docs/doc-exports
Ru, Li Yi
cd74617674
Reviewed-by: Wagner, Fabian <fabian.wagner@t-systems.com> Co-authored-by: Ru, Li Yi <liyiru7@huawei.com> Co-committed-by: Ru, Li Yi <liyiru7@huawei.com>
15 lines
2.2 KiB
HTML
15 lines
2.2 KiB
HTML
<a name="en-us_topic_introduction"></a><a name="en-us_topic_introduction"></a>
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<h1 class="topictitle1">What Is DDS?</h1>
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<div id="body52215961"><p id="en-us_topic_introduction__p37073266161026">Document Database Service (DDS) is a high availability DBaaS, which provides a secure, reliable and scalable solution, compatible with MongoDB community version 4.0.3 as baseline version.It provides functions such as one-click deployment, <span class="keyword" id="en-us_topic_introduction__keyword14492131173011">elastic capacity expansion</span>, <span class="keyword" id="en-us_topic_introduction__keyword13656940203011">disaster recovery</span>, backup, restoration, monitoring, and alarm reporting.</p>
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<p id="en-us_topic_introduction__p65223945161026">DDS has the following features:</p>
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<ul id="en-us_topic_introduction__ul50144594161026"><li id="en-us_topic_introduction__li35180331161026">DDS automatically establishes the three-node <span class="keyword" id="en-us_topic_introduction__keyword18736914174216">replica set</span> architecture. It supports fast deployment, <span class="keyword" id="en-us_topic_introduction__keyword93813256425">high availability (HA) data storage</span>, <span class="keyword" id="en-us_topic_introduction__keyword394920308428">data redundancy</span>, and failover.</li><li id="en-us_topic_introduction__li13418762102713">DDS provides sharded cluster instances comprised of a config node paired with multiple shards and dds mongos nodes. These clusters can be easily scaled up to enhance read and write performance.</li><li id="en-us_topic_introduction__li48187524161026">DDS lets you back up or restore a database from the management console in just a few clicks.</li><li id="en-us_topic_introduction__li5574606710">DDS provides performance metrics and you can configure alarm notifications to make it easier to keep abreast of instance statuses.</li></ul>
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<p id="en-us_topic_introduction__p15752318719">For details about the compatible DB engines and versions, see <a href="dds_01_0014.html">Database Engine and Version</a>.</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="en-us_topic_user_guide.html">Introduction</a></div>
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</div>
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</div>
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