{"id":5926,"date":"2023-08-26T09:45:56","date_gmt":"2023-08-26T01:45:56","guid":{"rendered":"http:\/\/www.killtest.hk\/?p=5926"},"modified":"2023-08-26T09:45:56","modified_gmt":"2023-08-26T01:45:56","slug":"%e6%8a%80%e8%a1%93%e4%b8%a8%e9%87%91%e8%9e%8d%e8%a1%8c%e6%a5%ad%e7%9a%84-nvme-%e5%ad%98%e5%84%b2%e7%b6%b2%e7%b5%a1%e8%a9%b2%e6%80%8e%e9%ba%bc%e5%bb%ba%ef%bc%9f%e5%b0%b1%e7%9c%8b%e9%80%99%e4%b8%80","status":"publish","type":"post","link":"https:\/\/www.killtest.hk\/index.php\/killtest\/%e6%8a%80%e8%a1%93%e4%b8%a8%e9%87%91%e8%9e%8d%e8%a1%8c%e6%a5%ad%e7%9a%84-nvme-%e5%ad%98%e5%84%b2%e7%b6%b2%e7%b5%a1%e8%a9%b2%e6%80%8e%e9%ba%bc%e5%bb%ba%ef%bc%9f%e5%b0%b1%e7%9c%8b%e9%80%99%e4%b8%80\/","title":{"rendered":"\u6280\u8853\u4e28\u91d1\u878d\u884c\u696d\u7684 NVMe \u5b58\u5132\u7db2\u7d61\u8a72\u600e\u9ebc\u5efa\uff1f\u5c31\u770b\u9019\u4e00\u7bc7 \u601d\u79d1\u806f\u5929\u4e0b"},"content":{"rendered":"<p>\u5f15\u8a00<\/p>\n<p>\u91d1\u878d\u884c\u696d\u7684\u6578\u64da\u5b89\u5168\u76f4\u63a5\u95dc\u4e4e\u8cc7\u91d1\u5b89\u5168\uff0c\u56e0\u6b64\u5b58\u5132\u8a2d\u5099\u5728\u5176 IT \u7cfb\u7d71\u4e2d\u4f54\u6709\u8209\u8db3\u8f15\u91cd\u7684\u4f4d\u7f6e\u3002\u96c6\u4e2d\u5f0f\u5b58\u5132\u662f\u91d1\u878d\u696d\u5e38\u898b\u7684\u5b58\u5132\u65b9\u5f0f\uff0c\u5728\u91d1\u878d\u884c\u696d\u5df2\u7d93\u4f7f\u7528\u4e86\u8d85\u904e\u4e8c\u5341\u5e74\u3002\u5f88\u591a\u9280\u884c\u90fd\u69cb\u5efa\u4e86\u70ba\u5b58\u5132\u6578\u64da\u800c\u914d\u5957\u7684\u5b58\u5132\u5340\u57df\u7db2\u7d61\uff08SAN\uff09\uff0c\u7d93\u904e\u591a\u6b21\u8fed\u4ee3\u767c\u5c55\u4e00\u76f4\u7a69\u5b9a\u904b\u884c\u3002\u8fd1\u5e74\u4f86\u96a8\u8457 IT \u6280\u8853\u7684\u4e0d\u65b7\u6f14\u9032\uff0c\u65b0\u7684\u7522\u54c1\u7d44\u5408\u548c\u6295\u8cc7\u7b56\u7565\u7684\u4e0d\u65b7\u6e67\u73fe\u4e5f\u7d66\u5b58\u5132\u548c\u5b58\u5132\u5340\u57df\u7db2\u7d61 (SAN) \u5e36\u4f86\u4e86\u65b0\u7684\u8b8a\u5316\uff0c\u5c0d\u91d1\u878d\u884c\u696d\u50b3\u7d71\u7684\u96c6\u4e2d\u5b58\u5132\u9020\u6210\u885d\u64ca\u3002\u5f88\u591a\u91d1\u878d\u4f01\u696d\u9762\u81e8\u8457\u5b58\u5132\u7db2\u7d61\u6280\u8853\u5982\u4f55\u9078\u64c7\u7684\u554f\u984c\u3002<\/p>\n<p>\u6839\u64da\u91d1\u878d\u884c\u696dIT \u767c\u5c55\u8da8\u52e2\uff0c\u5c0d\u65bcOLTP <a href=\"https:\/\/www.killtest.net\/s_CCNP-Data-Center\">\u6578\u64da<\/a>\u5eab\u61c9\u7528\uff0c\u672c\u5730NVMe SSD \u76e4\u6216\u9ad8\u7aefNVMe \u5168\u9583\u5b58\u5132\u662f\u5408\u9069\u7684\u9078\u64c7\uff1b\u5c0d\u65bc\u96f2\u74b0\u5883\u4e0b\u865b\u64ec\u5316\u548c\u57fa\u65bc\u5bb9\u5668\u7684\u61c9\u7528\uff0c\u5206\u4f48\u5f0f\u584a\u5b58\u5132\u6216\u5e36\u6709\u91cd\u522a\u58d3\u7e2e\u529f\u80fd\u7684\u4e2d\u9ad8\u7aefNVMe \u5168\u9583\u5b58\u5132\u6709\u66f4\u52a0\u660e\u986f\u7684\u6027\u50f9\u6bd4\u512a\u52e2\uff1b\u5c0d\u65bc\u975e\u7d50\u69cb\u5316\u6578\u64da\u548c\u6b78\u6a94\u6578\u64da\u7b49\u9762\u5411\u5c0d\u8c61\u5b58\u5132\u7684\u61c9\u7528\uff0c\u53ef\u4ee5\u9078\u64c7\u5927\u5bb9\u91cf\u7684\u4f4e\u6210\u672c\u5b58\u5132\u3002\u7e3d\u7684\u4f86\u8aaa\uff0c\u652f\u6301 NVMe \u5354\u8b70\u8a2d\u5099\u7684\u4f7f\u7528\u8d8a\u4f86\u8d8a\u666e\u904d\u3002<\/p>\n<p>\u7aef\u5230\u7aefNVMe \u5354\u8b70\u7684\u4f7f\u7528\uff0c\u65e2\u80fd\u5920\u91cb\u653e\u9583\u5b58\u4ecb\u8cea\u7684\u6027\u80fd\u6f5b\u529b\uff0c\u4e5f\u80fd\u5be6\u73fe\u5efa\u8a2d\u66f4\u6a19\u51c6\u901a\u7528\u7684\u6578\u64da\u4e2d\u5fc3\u7db2\u7d61\uff0c\u5f9e\u800c\u771f\u6b63\u6eff\u8db3\u8a08\u7b97\u8cc7\u6e90\u5c0d\u5b58\u5132\u7684\u9ad8\u6027\u80fd\u8981\u6c42\uff0c\u56e0\u6b64\u5df2\u6210\u70ba\u9ad8\u7aef\u5168\u9583\u5b58\u5132\u7684\u6a19\u914d\u3002\u96a8\u8457\u6210\u672c\u7684\u9032\u4e00\u6b65\u4e0b\u964d\uff0cNVMe+SSD \u7684\u7d44\u5408\u4e5f\u5fc5\u5c07\u5728\u4e2d\u4f4e\u7aef\u5b58\u5132\u4e2d\u4f7f\u7528\u3002\u4e0d\u7ba1\u662fSAN \u7db2\u7d61\u9084\u662fIP \u7db2\u7d61\uff0c\u50b3\u8f38\u74b0\u7bc0\u5c0dNVMe \u5354\u8b70\u7684\u652f\u6301\u662f\u5927\u52e2\u6240\u8da8\uff0cNVMe-oF\uff08NVMe over Fabric\uff09\u696d\u754c\u76ee\u524d\u6709\u5169\u985e\u89e3\u6c7a\u65b9\u6848\uff0c\u4e00\u985e\u662f\u57fa\u65bc\u50b3\u7d71FC \u7684\u65b9\u5f0f\uff0c\u53e6\u4e00\u985e\u662f\u57fa\u65bcRoCE\uff08 RDMA over Converged Ethernet\uff09\u7684\u65b9\u5f0f\u3002\u6027\u50f9\u6bd4\u3001\u7a69\u5b9a\u6027\u548c\u5b89\u5168\u6027\u7b49\u65b9\u9762\u7684\u7d9c\u5408\u56e0\u7d20\u6c7a\u5b9a\u4e86\u5b58\u5132\u7db2\u7d61\u6280\u8853\u7684\u9078\u64c7\u3002<\/p>\n<p>\u6211\u5011\u5c07\u5206\u5169\u671f\u70ba\u5927\u5bb6\u4ecb\u7d39\uff0c\u672c\u671f\u91dd\u5c0dNVMe \u6280\u8853\u4ee5\u53caNVMe-oF \u6280\u8853\u9032\u884c\u63a2\u8a0e\uff0c\u5206\u6790\u4e0d\u540c\u7684NVMe-oF \u7684\u512a\u7f3a\u9ede\uff1b\u4e0b\u671f\u5167\u5bb9\u91dd\u5c0d\u5982\u4f55\u9078\u64c7\u5408\u9069\u7684NVMe-oF \u9032\u884c\u8a0e\u8ad6\uff0c\u4ee5\u53ca\u601d\u79d1\u91dd\u5c0d\u91d1\u878d\u884c\u696d\u5728\u4e0d\u540c\u5834\u666f\u4e0b\u7684\u89e3\u6c7a\u65b9\u6848\u548c\u5efa\u8b70\u3002<\/p>\n<p>NVMe \u548c NVMe-oF \u6280\u8853\u7684\u524d\u4e16\u4eca\u751f<\/p>\n<p>\u9996\u5148\u6211\u5011\u4f86\u63a2\u8a0e\u4e00\u4e0b NVMe \u548c NVMe-oF \u6280\u8853\u672c\u8eab\u3002<\/p>\n<p>01.\u662f\u4ec0\u9ebc\u8b93 NVMe \u5982\u6b64\u4e4b\u5feb\uff1f<\/p>\n<p>\u76ee\u524d SAN \u7cfb\u7d71\u4f7f\u7528\u7684\u4e3b\u8981\u6578\u64da\u50b3\u8f38\u5354\u8b70\u6709 FC Protocol\u3001iSCSI \u548c FCoE\u3002\u9019\u4e9b\u90fd\u662f\u5efa\u7acb\u5728 SCSI \u4e4b\u4e0a\u7684\uff0cSCSI \u662f\u4e00\u5957 1970 \u5e74\u4ee3\u70ba\u8edf\u76e4\u548c\u786c\u76e4\u9a45\u52d5\u5668\u8a2d\u8a08\u7684\u63a5\u53e3\u6a19\u6e96\u3002<\/p>\n<p>NVMe \u6a19\u6e96\u662f\u5728\u904e\u53bb\u5341\u5e74\u4e2d\u88fd\u5b9a\u7684\uff0c\u5c08\u9580\u8a2d\u8a08\u7528\u65bc\u5145\u5206\u5229\u7528\u9583\u5b58\u3001\u56fa\u614b\u9a45\u52d5\u5668 (SSD)\u3001NVMe \u9023\u63a5\u7684 SSD\uff0c\u751a\u81f3\u662f\u5c1a\u672a\u767c\u660e\u7684\u5b58\u5132\u6280\u8853\u3002\u8207 SCSI \u7684\u55ae\u500b\u547d\u4ee4\u968a\u5217\uff08\u6df1\u5ea6\u70ba 32 \u500b\u547d\u4ee4\uff09\u4e0d\u540c\uff0cNVMe \u652f\u6301 64K \u968a\u5217\uff0c\u6bcf\u500b\u968a\u5217\u6709 64K \u500b\u547d\u4ee4\uff0c\u9019\u610f\u5473\u8457\u53ef\u4ee5\u540c\u6642\u57f7\u884c\u66f4\u591a\u6578\u91cf\u7684\u547d\u4ee4\u3002<br \/>\n<a href=\"http:\/\/www.killtest.hk\/index.php\/killtest\/%e6%8a%80%e8%a1%93%e4%b8%a8%e9%87%91%e8%9e%8d%e8%a1%8c%e6%a5%ad%e7%9a%84-nvme-%e5%ad%98%e5%84%b2%e7%b6%b2%e7%b5%a1%e8%a9%b2%e6%80%8e%e9%ba%bc%e5%bb%ba%ef%bc%9f%e5%b0%b1%e7%9c%8b%e9%80%99%e4%b8%80\/attachment\/640-2\/\" rel=\"attachment wp-att-5927\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.killtest.hk\/wp-content\/uploads\/2023\/08\/640-2.png\" alt=\"\" width=\"1080\" height=\"542\" class=\"alignleft size-full wp-image-5927\" srcset=\"https:\/\/www.killtest.hk\/wp-content\/uploads\/2023\/08\/640-2.png 1080w, https:\/\/www.killtest.hk\/wp-content\/uploads\/2023\/08\/640-2-300x151.png 300w, https:\/\/www.killtest.hk\/wp-content\/uploads\/2023\/08\/640-2-768x385.png 768w, https:\/\/www.killtest.hk\/wp-content\/uploads\/2023\/08\/640-2-1024x514.png 1024w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/a><br \/>\nNVMe \u7684\u7b2c\u4e00\u6b21\u8fed\u4ee3\u5c08\u6ce8\u65bc\u512a\u5316\u901a\u904e\u9ad8\u901f\u5916\u570d\u7d44\u4ef6\u4e92\u9023(PCIe)\u9ad8\u901f\u7e3d\u7dda\u9023\u63a5\u7684\u8a08\u7b97\u6a5f\u548c\u672c\u5730 NVMe \u4ecb\u8cea\u4e4b\u9593\u7684 I\/O\u3002\u7576\u5b83\u767c\u5c55\u5230 NVMe-oF \u6642\uff0c\u4e00\u500b\u95dc\u9375\u7684\u8a2d\u8a08\u76ee\u6a19\u662f\u78ba\u4fdd\u5b83\u652f\u6301\u76e1\u53ef\u80fd\u5ee3\u6cdb\u7684\u7d50\u69cb\u548c\u7db2\u7d61\u5354\u8b70\u3002\u4eca\u5929\uff0c\u6709\u4e09\u7a2e\u4e3b\u8981\u7684\u6578\u64da\u50b3\u8f38\u5354\u8b70\uff1aNVMe over Fibre Channel\uff08NVMe\/FC\uff09\u3001NVMe over RDMA \uff08NVMe\/RDMA) \u548c NVMe over TCP\uff08NVMe \/TCP\uff09\u3002<\/p>\n<p>\u9019\u662f\u56e0\u70ba NVMe \u6578\u64da\u50b3\u8f38\u6a19\u6e96\u6709\u5169\u500b\u4e0d\u540c\u7684\u65b9\u9762\uff1a<\/p>\n<p>\u2022\u4f5c\u70ba\u9583\u5b58\u4ecb\u8cea\u548c\u5b58\u5132\u63a7\u5236\u5668\u4e4b\u9593\u7684 \u201c\u5f8c\u7aef\u201d \u5354\u8b70<br \/>\n\u2022\u4f5c\u70ba\u8de8 Data Fabric \u7684\u4e3b\u6a5f\u548c\u5b58\u5132\u63a7\u5236\u5668\u4e4b\u9593\u7684 \u201c\u524d\u7aef\u201d \u5354\u8b70\uff0c\u5373\u4f5c\u70ba NVMe over Fabrics (NVMe-oF)<\/p>\n<p>\u5f88\u91cd\u8981\u7684\u662f\uff0c\u5728\u5927\u591a\u6578\u60c5\u6cc1\u4e0b\uff0cNVMe \u7684\u6f5b\u5728\u901f\u5ea6\u63d0\u5347\u53ea\u6709\u4e0d\u523020% \u662f\u4f86\u81ea\u65bc\u4f7f\u7528\u7684\u5f8c\u7aefNVMe \u4ecb\u8cea\uff0c80% \u6216\u66f4\u591a\u7684\u597d\u8655\u4f86\u81ea\u65bc\u4f7f\u7528NVMe-oF \u53d6\u4ee3\u57fa\u65bcSCSI \u7684\u524d\u7aef\u6578\u64da\u50b3\u8f38\u5354\u8b70\u3002\u56e0\u6b64\u8acb\u59cb\u7d42\u78ba\u5b9a\u6240\u8a0e\u8ad6\u7684\u5b58\u5132\u7cfb\u7d71\u662f\u5426\u771f\u7684\u5728\u904b\u884c NVMe-oF \uff0c\u800c\u4e0d\u50c5\u50c5\u662f\u5f8c\u7aef NVMe \u9583\u5b58\u4ecb\u8cea\u3002<\/p>\n<p>\u5c07 NVMe \u7684\u5927\u898f\u6a21\u4e26\u884c\u6027\u5f15\u5165 Data Fabric \u6709\u671b\u5e36\u4f86\u5de8\u5927\u7684\u6027\u80fd\u63d0\u5347\u3002\u63a5\u4e0b\u4f86\uff0cIT \u9818\u5c0e\u8005\u548c\u67b6\u69cb\u5e2b\u9762\u81e8\u7684\u554f\u984c\u662f\uff0c\u7d9c\u5408\u8003\u616e\u6027\u80fd\u3001\u53ef\u9760\u6027\u548c\u6210\u672c\u4e0a\u7684\u5de8\u5927\u5dee\u7570\uff0c\u9078\u64c7\u5408\u9069\u7684\u67b6\u69cb\u3002<\/p>\n<p>\u81ea 2016 \u5e74\u767c\u5e03\u4ee5\u4f86\uff0cNVMe-oF \u6a19\u6e96\u65e8\u5728\u78ba\u4fdd NVMe \u547d\u4ee4\u96c6\u53ef\u4ee5\u901a\u904e\u76e1\u53ef\u80fd\u5ee3\u6cdb\u7684\u67b6\u69cb\u548c\u7db2\u7d61\u50b3\u8f38\u5354\u8b70\u9032\u884c\u50b3\u8f38\u3002<\/p>\n<p>02.\u4e09\u7a2e\u4e3b\u8981 Fabric<\/p>\n<p>\u4eca\u5929\uff0cIT \u4e16\u754c\u7684\u4e3b\u8981\u6578\u64da\u50b3\u8f38\u5354\u8b70\u662f\uff1a<\/p>\n<p>\u2022\u5149\u7e96\u901a\u9053 (FC)\uff1a\u5927\u591a\u6578\u4f01\u696d SAN \u7cfb\u7d71\u4f7f\u7528\u7684\u4e3b\u8981\u5354\u8b70\uff0c\u7528\u65bc\u5728\u5b58\u5132\u8a2d\u5099\u548c\u670d\u52d9\u5668\u4e4b\u9593\u50b3\u8f38\u6578\u64da\u3002<br \/>\n\u2022\u9060\u7a0b\u76f4\u63a5\u5167\u5b58\u8a2a\u554f (RDMA) \uff1a\u5728\u8a08\u7b97\u6a5f\u7cfb\u7d71\u4e4b\u9593\u4e0d\u4f9d\u8cf4\u64cd\u4f5c\u7cfb\u7d71\u76f4\u63a5\u8a2a\u554f\u5167\u5b58\u7684\u5404\u7a2e\u65b9\u5f0f\u3002<br \/>\n\u2022\u50b3\u8f38\u63a7\u5236\u5354\u8b70\/\u4e92\u806f\u7db2\u5354\u8b70 (TCP\/IP) \uff1a\u4f7f\u7528 TCP \u50b3\u8f38\u5354\u8b70\u8de8 IP \u7db2\u7d61\u50b3\u9001\u6578\u64da\uff0c\u5c31\u50cf\u4e92\u806f\u7db2\u4e00\u6a23\u3002<\/p>\n<p>NVMe \u652f\u6301\u7684\u4e09\u7a2e\u76f8\u61c9\u985e\u578b\u7684\u7d50\u69cb\u662f\uff1a<br \/>\n<a href=\"http:\/\/www.killtest.hk\/index.php\/killtest\/%e6%8a%80%e8%a1%93%e4%b8%a8%e9%87%91%e8%9e%8d%e8%a1%8c%e6%a5%ad%e7%9a%84-nvme-%e5%ad%98%e5%84%b2%e7%b6%b2%e7%b5%a1%e8%a9%b2%e6%80%8e%e9%ba%bc%e5%bb%ba%ef%bc%9f%e5%b0%b1%e7%9c%8b%e9%80%99%e4%b8%80\/attachment\/640-3\/\" rel=\"attachment wp-att-5928\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.killtest.hk\/wp-content\/uploads\/2023\/08\/640-3.png\" alt=\"\" width=\"612\" height=\"322\" class=\"alignleft size-full wp-image-5928\" srcset=\"https:\/\/www.killtest.hk\/wp-content\/uploads\/2023\/08\/640-3.png 612w, https:\/\/www.killtest.hk\/wp-content\/uploads\/2023\/08\/640-3-300x158.png 300w\" sizes=\"auto, (max-width: 612px) 100vw, 612px\" \/><\/a><br \/>\n\u2022NVMe over FC\uff1a\u5c01\u88dd\u5728 FC \u6846\u67b6\u5167\u7684 NVMe \u547d\u4ee4\u96c6\u3002\u5b83\u4f9d\u8cf4\u65bc\u5206\u5340\u7b49\u5e38\u898b\u7684 FC \u9032\u7a0b\uff0c\u4e26\u4e14\u53ef\u4ee5\u8f15\u9b06\u5730\u8207\u4eca\u5929\u7684\u6a19\u6e96 FC \u5354\u8b70\u5171\u5b58\uff0c\u5176\u4e2d NVMe \u547d\u4ee4\u96c6\u88ab\u5c01\u88dd\u5728 FC \u5e40\u4e2d\u3002<br \/>\n\u2022NVMe over RoCE (NVMe\/RoCE)\u3001InfiniBand \u548c iWARP\uff1a\u4e00\u500b\u65b0\u8208\u7684\u66ff\u4ee3\u65b9\u6848\u662f RoCE v2\uff0c\u5b83\u5728\u7269\u7406\u878d\u5408\u4ee5\u592a\u7db2\uff08\u6578\u64da\u4e2d\u5fc3\u6a4b\u63a5\u7121\u640d\u4ee5\u592a\u7db2\u7db2\u7d61\uff09\u4e0a\u4f7f\u7528 RDMA\u3002<br \/>\n\u2022NVMe over TCP (NVMe\/TCP)\uff1aNVMe \u901a\u904e\u4ee5\u592a\u7db2\u4f5c\u70ba\u7269\u7406\u50b3\u8f38\u5728 TCP \u6578\u64da\u5831\u5167\u90e8\u50b3\u8f38\u3002\u5118\u7ba1 RoCE \u548c NVMe\/TCP \u90fd\u4f7f\u7528\u4ee5\u592a\u7db2\uff0c\u4f46 NVMe\/TCP \u7684\u884c\u70ba\u66f4\u50cf NVMe\/FC\uff0c\u56e0\u70ba\u5b83\u5011\u90fd\u4f7f\u7528 I\/O \u7684\u6d88\u606f\u50b3\u905e\u8a9e\u7fa9\u3002<\/p>\n<p>03.NVMe-oF \u6280\u8853\u5c0d\u6bd4<\/p>\n<p>3.1 NVMe\/FC<\/p>\n<p>\u5927\u591a\u6578\u4f01\u696d\u76ee\u524d\u5c07\u5176\u95dc\u9375\u4efb\u52d9\u5de5\u4f5c\u8ca0\u8f09\u59d4\u8a17\u7d66\u57fa\u65bc FC \u7684 SAN \u7cfb\u7d71\uff0c\u56e0\u70ba\u5b83\u5011\u59cb\u7d42\u5982\u4e00\u7684\u9ad8\u901f\u3001\u9ad8\u6548\u548c\u53ef\u7528\u6027\u3002<\/p>\n<p>\u2022NVMe\/FC<br \/>\n\u25c6\u512a\u9ede\uff1a<\/p>\n<p>\u258eNVMe\/FC \u63d0\u4f9b\u4e86\u975e\u5e38\u5927\u7684\u6027\u80fd\u63d0\u5347\u4e26\u6e1b\u5c11\u4e86\u5de5\u4f5c\u8ca0\u8f09\u5ef6\u9072\u3002<br \/>\n\u258eFC \u5354\u8b70\u7a69\u5b9a\u3001\u6210\u719f\u3001\u9ad8\u6548\u3001\u901f\u5ea6\u6975\u5feb\uff0c\u4e26\u63d0\u4f9b\u59cb\u7d42\u5982\u4e00\u7684\u9ad8\u6027\u80fd\u3002<br \/>\n\u258e\u7576\u524d\u53ef\u7528\u7684\u5b58\u5132\u7cfb\u7d71\u53ef\u4ee5\u901a\u904e\u4f7f\u7528\u76f8\u540c\u7684\u7d50\u69cb\u7d44\u4ef6\uff08HBA\u3001\u4ea4\u63db\u6a5f\u7b49\uff09\u540c\u6642\u8a17\u7ba1\u548c\u652f\u6301 NVMe\/FC \u548c FC \u6d41\u91cf\uff0c\u56e0\u6b64\u7528\u6236\u53ef\u4ee5\u8f15\u9b06\u5f9e FC \u904e\u6e21\u5230 NVMe\/FC\u3002<br \/>\n\u258e\u501f\u52a9 NVMe \u89e3\u6c7a\u65b9\u6848\uff0c\u7121\u9700\u66f4\u6539\u61c9\u7528\u7a0b\u5e8f\u5373\u53ef\u5be6\u65bd NVMe\/FC\uff0c\u56e0\u6b64\u7121\u9700\u5c0d\u7db2\u7d61\u57fa\u790e\u67b6\u69cb\u505a\u66ff\u63db\u6027\u5347\u7d1a\u3002<br \/>\n\u258eNVMe\/FC \u6bd4\u5176\u4ed6 NVMe-oF \u9078\u9805\u66f4\u6210\u719f\uff0c\u73fe\u5728\u5728 NVMe-oF \u9818\u57df\u64c1\u6709\u6700\u5927\u7684\u751f\u614b\u7cfb\u7d71\u3002<br \/>\n\u25c6\u7f3a\u9ede\uff1a<\/p>\n<p>\u258eNVMe\/FC \u4f9d\u8cf4\u65bc FC \u7d50\u69cb\uff0c\u56e0\u6b64\u53ef\u80fd\u4e0d\u592a\u9069\u5408\u6c92\u6709 FC \u7d50\u69cb\u6216\u8a66\u5716\u64fa\u812b FC \u7d50\u69cb\u7684\u7d44\u7e54\u3002<\/p>\n<p>3.2 RDMA<br \/>\nRDMA \u662f\u4e00\u7a2e\u5728\u7db2\u7d61\u4e2d\u5169\u53f0\u8a08\u7b97\u6a5f\u7684\u4e3b\u5167\u5b58\u4e4b\u9593\u4ea4\u63db\u6578\u64da\u7684\u65b9\u5f0f\uff0c\u7121\u9700\u6d89\u53ca\u4efb\u4f55\u4e00\u53f0\u8a08\u7b97\u6a5f\u7684\u8655\u7406\u5668\u3001\u7de9\u5b58\u6216\u64cd\u4f5c\u7cfb\u7d71\u3002\u56e0\u70ba RDMA \u7e5e\u904e\u64cd\u4f5c\u7cfb\u7d71\uff0c\u5b83\u901a\u5e38\u662f\u901a\u904e\u7db2\u7d61\u50b3\u8f38\u6578\u64da\u7684\u6700\u5feb\u548c\u6700\u4f4e\u958b\u92b7\u7684\u6a5f\u5236\u3002<\/p>\n<p>\u4f01\u696d\u8a08\u7b97\u4e2d\u6709\u5169\u7a2e\u4e3b\u8981\u7684 RDMA \u8b8a\u9ad4\uff1aInfiniBand \u548c RDMA over Converged Ethernet (RoCE)\u3002<\/p>\n<p>3.2.1 InfiniBand \u4e0a\u7684 NVMe (NVMe\/IB)<\/p>\n<p>InfiniBand \u662f\u6700\u65e9\u7684 RDMA \u5be6\u73fe\u4e4b\u4e00\uff0c\u4ee5\u8d85\u5feb\u7684\u6027\u80fd\u8457\u7a31\u3002\u5118\u7ba1\u5177\u6709\u512a\u52e2\uff0cInfiniBand \u4e26\u4e0d\u50cf\u5176\u8fd1\u89aa RoCE \u6216\u4f01\u696d\u6a19\u6e96 FC \u90a3\u6a23\u6d41\u884c\u3002<\/p>\n<p>\u2022NVMe\/IB<br \/>\n\u25c6\u512a\u9ede\uff1a<br \/>\n\u258e\u975e\u5e38\u5feb\u901f\u7684\u5354\u8b70\u3002<\/p>\n<p>\u258e\u5ee3\u6cdb\u7528\u65bc\u5927\u6578\u64da\u5206\u6790\uff08\u4f8b\u5982 Hadoop \u5de5\u4f5c\u8ca0\u8f09\uff09\u548c\u79d1\u5b78\u8a08\u7b97\u3002<\/p>\n<p>\u25c6\u7f3a\u9ede\uff1a<br \/>\n\u258e\u6602\u8cb4\u4e14\u8a31\u591a\u4f9b\u61c9\u5546\u4e0d\u652f\u6301\u3002<br \/>\n\u258e\u4e0d\u5bb9\u6613\u64f4\u5c55\u3002<br \/>\n\u258e\u5728\u5927\u591a\u6578\u4e00\u822c\u4f01\u696d\u8a08\u7b97\u74b0\u5883\u4e2d\u627e\u4e0d\u5230\u3002<\/p>\n<p>3.2.2 RoCEv2 \u4e0a\u7684 NVMe (NVMe\/RoCEv2)<\/p>\n<p>\u5728 RDMA \u5354\u8b70\u4e2d\uff0c\u5d84\u9732\u982d\u89d2\u7684\u7af6\u722d\u8005\u662f RoCE\uff0c\u5b83\u5728\u878d\u5408\u4ee5\u592a\u7db2\u4e0a\u904b\u884c\uff0c\u878d\u5408\u4ee5\u592a\u7db2\u662f\u4ee5\u592a\u7db2\u5354\u8b70\u7684\u4e00\u7d44\u6578\u64da\u4e2d\u5fc3\u6a4b\u63a5 (DCB) \u589e\u5f37\u529f\u80fd\uff0c\u65e8\u5728\u4f7f\u5176\u7121\u640d\u3002 RoCE v1 \u5728\u7b2c 2 \u5c64\u904b\u884c\uff0c\u5373\u958b\u653e\u7cfb\u7d71\u4e92\u9023 (OSI) \u6a21\u578b\u4e2d\u7684\u6578\u64da\u93c8\u8def\u5c64\u3002\u56e0\u6b64\uff0c\u5b83\u4e0d\u80fd\u5728\u5b50\u7db2\u4e4b\u9593\u8def\u7531\uff0c\u6240\u4ee5\u5b83\u53ea\u652f\u6301\u540c\u4e00\u4ee5\u592a\u7db2\u7db2\u7d61\u4e2d\u7684\u5169\u53f0\u4e3b\u6a5f\u4e4b\u9593\u7684\u901a\u4fe1\u3002 RoCE v2 \u66f4\u6709\u50f9\u503c\uff0c\u56e0\u70ba\u5b83\u4f7f\u7528\u7528\u6236\u6578\u64da\u5831\u5354\u8b70 (UDP)\uff0c\u56e0\u6b64\u8207 NVMe\/TCP \u4e00\u6a23\uff0c\u5728 OSI \u7b2c 3 \u5c64\u904b\u884c\u4e26\u4e14\u53ef\u4ee5\u8def\u7531\u3002<\/p>\n<p>\u2022NVMe\/RoCEv2<br \/>\n\u25c6\u512a\u9ede\uff1a<br \/>\n\u258eNVMe\/RoCE \u4f7f\u7528\u4ee5\u592a\u7db2\u7db2\u7d61\u9032\u884c\u50b3\u8f38\uff0c\u5145\u5206\u5229\u7528\u4e86\u5ee3\u53d7\u6b61\u8fce\u7684\u7db2\u7d61\u6a19\u6e96\u3002<\/p>\n<p>\u258eRoCE v2 \u7522\u54c1\u7531\u591a\u5bb6\u4f01\u696d\u5b58\u5132\u4f9b\u61c9\u5546\u958b\u767c\u3002<\/p>\n<p>\u25c6\u7f3a\u9ede\uff1a<br \/>\n\u258eRoCE v2 \u76ee\u524d\u6709\u4e00\u500b\u975e\u5e38\u5c0f\u7684\u751f\u614b\u7cfb\u7d71\uff0c\u53ea\u6709\u5c11\u6578\u7248\u672c\u7684\u64cd\u4f5c\u7cfb\u7d71\u652f\u6301\uff0c\u4e26\u4e14\u4e0d\u652f\u6301\u5b58\u5132\u9ad8\u53ef\u7528\u6027\u6216\u591a\u8def\u5f91\u3002<br \/>\n\u258e\u4ee5\u592a\u7db2\u5f9e\u6839\u672c\u4e0a\u8b1b\u662f\u6709\u640d\u7684\uff1a\u5b83\u65e8\u5728\u61c9\u5c0d\u4e0d\u53ef\u9760\u7684\u7db2\u7d61\uff0c\u56e0\u6b64\u6709\u5f88\u591a\u7cfe\u932f\u548c\u91cd\u50b3\u9078\u9805\u3002\u7136\u800c\uff0c\u7528\u65bc NVMe I\/O \u7684\u878d\u5408\u4ee5\u592a\u7db2\uff08RoCE \u4e2d\u7684 \u201cCE\u201d\uff09\u7db2\u7d61\u5fc5\u9808\u662f\u7121\u640d\u7684\uff0c\u9019\u9700\u8981\u512a\u5148\u6d41\u63a7\u5236 (PFC) \u548c\u986f\u5f0f\u64c1\u585e\u901a\u77e5 (ECN) \u7b49\u6a5f\u5236\u3002\u56e0\u6b64\uff0c\u878d\u5408\u4ee5\u592a\u7db2\u7db2\u7d61\u5177\u6709\u56b4\u683c\u7684\u5bb9\u5dee\uff0c\u4f7f\u5176\u96e3\u4ee5\u64f4\u5c55\u3002<br \/>\n\u258e\u5927\u591a\u6578\u8003\u616e\u63a1\u7528 RoCE v2 \u7684\u7d44\u7e54\u90fd\u9700\u8981\u8cfc\u8cb7\u76f8\u5c0d\u6602\u8cb4\u7684\u5c08\u7528 DCB \u7db2\u7d61\u4ea4\u63db\u6a5f\u548c RDMA \u7db2\u7d61\u63a5\u53e3\u5361 (RNIC)\u3002 DCB \u7db2\u7d61\u53ef\u80fd\u96e3\u4ee5\u8a2d\u7f6e\u548c\u64f4\u5c55\u3002<\/p>\n<p>   3.3 \u57fa\u65bc TCP\/IP \u7684 NVMe<\/p>\n<p>\u8fc4\u4eca\u70ba\u6b62\uff0cFC \u6216 InfiniBand \u7db2\u7d61\u7684\u6210\u672c\u4f7f\u4e00\u4e9b\u7d44\u7e54\u7121\u6cd5\u9032\u5165 NVMe-oF \u5e02\u5834\u3002\u70ba\u4e86\u586b\u88dc\u5e02\u5834\u7a7a\u767d\uff0c NVMe.org \u806f\u76df\u958b\u767c\u4e26\u767c\u5e03\u4e86\u65b0\u7684 NVMe-oF \u6a19\u6e96 (NVMe\/TCP)\uff0c\u8a72\u6a19\u6e96\u4f7f\u7528\u4ee5\u592a\u7db2 LAN \u548c TCP \u6578\u64da\u5831\u4f5c\u70ba\u50b3\u8f38\u3002<\/p>\n<p>\u4e8b\u5be6\u4e0a\uff0c2018 \u5e74 11 \u6708\uff0cNVMe \u6a19\u6e96\u6a5f\u69cb\u6279\u51c6 NVMe\/TCP \u4f5c\u70ba\u4e00\u7a2e\u65b0\u7684\u50b3\u8f38\u6a5f\u5236\u3002\u672a\u4f86\uff0cTCP\/IP \u5f88\u53ef\u80fd\u6703\u767c\u5c55\u6210\u70ba NVMe \u7684\u91cd\u8981\u6578\u64da\u4e2d\u5fc3\u50b3\u8f38\u3002<\/p>\n<p>\u2022\u57fa\u65bc TCP \u7684 NVMe<\/p>\n<p>\u25c6\u512a\u9ede\uff1a<\/p>\n<p>\u258e\u8a72\u6a19\u6e96\u4f7f\u7528 TCP \u4f5c\u70ba\u50b3\u8f38\u3002 TCP \u975e\u5e38\u666e\u904d\u3001\u6613\u65bc\u7406\u89e3\u4e14\u9ad8\u5ea6\u53ef\u64f4\u5c55\u3002<br \/>\n\u258e\u5118\u7ba1\u4f7f\u7528\u4ee5\u592a\u7db2\u9032\u884c\u9023\u63a5\uff0c\u4f46 NVMe\/TCP \u66f4\u985e\u4f3c\u65bc NVMe\/FC\uff0c\u56e0\u70ba\u5169\u8005\u90fd\u4f7f\u7528\u6d88\u606f\u9032\u884c\u6838\u5fc3\u901a\u4fe1\uff0c\u9019\u8207\u57fa\u65bc RDMA \u7684\u5354\u8b70\uff08\u5982\u4f7f\u7528\u5167\u5b58\u8a9e\u7fa9\u7684 RoCE\uff09\u4e0d\u540c\u3002<br \/>\n\u258eTCP \u4e16\u754c\u4e2d\u6709\u4e00\u500b\u9f90\u5927\u7684\u4f9b\u61c9\u5546\u751f\u614b\u7cfb\u7d71\uff0c\u4ed6\u5011\u5728\u63d0\u9ad8\u5176\u6027\u80fd\u65b9\u9762\u9032\u884c\u4e86\u5927\u91cf\u6295\u8cc7\u3002\u5728\u672a\u4f86\u5e7e\u5e74\uff0c\u901f\u5ea6\u53ef\u80fd\u6703\u986f\u8457\u63d0\u9ad8\u3002<br \/>\n\u25c6\u7f3a\u9ede\uff1a<\/p>\n<p>\u258e\u7db2\u7d61\u8a2d\u8a08\u6703\u5c0d NVMe\/TCP \u6027\u80fd\u7522\u751f\u5de8\u5927\u5f71\u97ff\u3002\u7279\u5225\u662f\uff0c\u7de9\u885d\u5340\u7684\u5206\u914d\u9700\u8981 \u201c\u6070\u5230\u597d\u8655\u201d\u3002\u592a\u591a\u7de9\u885d\u6703\u589e\u52a0\u5ef6\u9072\uff0c\u592a\u5c11\u6703\u5c0e\u81f4\u4e1f\u68c4\u548c\u91cd\u50b3\u3002<\/p>\n<p>\u258eNVMe over TCP \u662f NVMe \u7684\u6700\u65b0\u7d50\u69cb\u6280\u8853\uff0c\u5c1a\u672a\u5168\u9762\u5546\u7528\u3002<\/p>\n<p>\u5f9e\u4ee5\u4e0a\u5404\u7a2e\u6280\u8853\u7684\u6bd4\u8f03\u4e0d\u96e3\u770b\u51fa\uff0c\u76ee\u524d\u6700\u70ba\u6210\u719f\u7684 NVMe-oF 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