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<div style="font-family:sans-serif"><div style="white-space:normal"><p dir="auto">This sounds like expected behavior with 3 storage nodes. In order for a write to successfully complete, it must be written to a quorum of storage devices. In the case of 3 replicas, the quorum is 2. By writing to two drives, Swift is providing some guarantees about the durability and availability of the data. A single copy is not durable, so a write to only a single drive will never return success to the client.</p>
<p dir="auto">This means that you need at least 2 drives available in order to write to a 3 replica policy.</p>
<p dir="auto">--John</p>
<br><br><br><p dir="auto">On 13 Feb 2018, at 3:21, aRaviNd wrote:</p>
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<blockquote style="border-left:2px solid #777; color:#777; margin:0 0 5px; padding-left:5px"><div id="209D034E-8E25-44B5-953A-F33412335B43"><div dir="ltr">Hi All,<div><br></div><div>We have configured swift with one proxy and three storage nodes. Our setup contain two regions and three zones.</div><div><br></div><div><img src="cid:ii_jdlk2kbc2_1618ee463ef845e9" width="544" height="133"><br><br></div><div>When two nodes goes down we are not able to upload any files but download and read is working fine. Is there any requirement for minimum no of storage nodes required for write to work?</div><div><br></div><div>Aravind M D</div></div></div></blockquote>
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