forked from laiweijian4/doc-exports
Zheng, Xiu
0c90df93b1
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: Zheng, Xiu <zhengxiu@huawei.com> Co-committed-by: Zheng, Xiu <zhengxiu@huawei.com>
23 lines
3.6 KiB
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23 lines
3.6 KiB
HTML
<a name="css_02_0034"></a><a name="css_02_0034"></a>
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<h1 class="topictitle1">What Are Regions and AZs?</h1>
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<div id="body8662426"><div class="section" id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_section388255972712"><h4 class="sectiontitle">Regions and AZs</h4><p id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_p212716216381">A region and availability zone (AZ) identify the location of a data center. You can create resources in a specific region and AZ.</p>
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<ul id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_ul86578533460"><li id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_li14657175334618">A region is a physical data center. Each region is completely independent, and thereby improves fault tolerance and stability. After a resource is created, its region cannot be changed.</li><li id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_li45875020473">An AZ is a physical location using independent power supplies and networks. Faults in an AZ do not affect other AZs. A region can contain multiple AZs that are physically isolated but networked together. This enables low-cost and low-latency network connections.</li></ul>
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<div class="p" id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_p1479174514614"><a href="#css_02_0034__en-us_topic_0192920412_fig115516197127">Figure 1</a> shows the relationship between regions and AZs.<div class="fignone" id="css_02_0034__en-us_topic_0192920412_fig115516197127"><a name="css_02_0034__en-us_topic_0192920412_fig115516197127"></a><a name="en-us_topic_0192920412_fig115516197127"></a><span class="figcap"><b>Figure 1 </b>Regions and AZs</span><br><span><img id="css_02_0034__en-us_topic_0192920412_image16321181617123" src="en-us_image_0000001527937353.png"></span></div>
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<div class="section" id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_section67281149192216"><h4 class="sectiontitle">Region Selection</h4><p id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_p68521454132212">You are advised to select a region close to you or your target users. This reduces network latency and improves the access success rate.</p>
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<div class="section" id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_section193971112578"><h4 class="sectiontitle">AZ Selection</h4><p id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_p859161416717">When determining whether to deploy resources in the same AZ, consider your application's requirements for disaster recovery (DR) and network latency.</p>
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<ul id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_ul157203571473"><li id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_li7720175710711">To prioritize DR capabilities, deploy resources in different AZs in the same region.</li><li id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_li109763595719">To prioritize network latency, deploy resources in the same AZ.</li></ul>
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<div class="section" id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_section1110135820407"><h4 class="sectiontitle">Regions and Endpoints</h4><p id="css_02_0034__en-us_topic_0192920412_en-us_topic_0184026189_p361784821111">Before using an API to call resources, you will need to specify the resource region and endpoint. For details, see "Endpoints" in <em id="css_02_0034__en-us_topic_0192920412_i194771463311">Cloud Search Service API Reference</em>.</p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="css_02_0051.html">General Consulting</a></div>
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