{"id":9709,"date":"2012-10-25T00:00:00","date_gmt":"2012-10-24T16:00:00","guid":{"rendered":""},"modified":"2012-10-25T00:00:00","modified_gmt":"2012-10-24T16:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/www.homejamesfinance.com\/p\/9709.html","title":{"rendered":"iSCSI\u5b58\u50a8\u6280\u672f\u4e0e\u865a\u62df\u5316\u7ed3\u5408"},"content":{"rendered":"

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“IP\u4ece\u672c\u8d28\u4e0a\u6765\u8bf4\u5c31\u662f\u4e00\u4e2a\u865a\u62df\u7684\u534f\u8bae\uff0c\u57fa\u4e8eiSCSI\u7684SAN\u80fd\u591f\u52a8\u6001\u7684\u627e\u5230\u865a\u62df\u7684\u670d\u52a1\u5668\uff0c\u800c\u4e0d\u9700\u8981\u5bf9\u4e4b\u524d\u5b58\u50a8\u7269\u7406\u5730\u5740\u77e5\u8bc6\u7684\u638c\u63e1\uff0cTCP\/IP\u662f\u4e00\u4e2a \u9ad8\u7ea7\u5c42\u7684\u534f\u8bae\uff0c\u5df2\u7ecf\u5177\u5907\u4e86\u865a\u62df\u7684\u57fa\u7840\u3002”\u8bb8\u826f\u8c0b\u8ba4\u4e3a\uff0c\u7f51\u7edc\u53d1\u5c55\u7684\u8d8b\u52bf\uff0c\u5c31\u662f\u57fa\u7840\u8bbe\u65bd\u5c06\u8fc1\u5f80\u4ee5\u592a\u7f51\uff0c\u65e0\u8bba\u662fiSCSI\u8fd8\u662f\u5149\u7ea4\u901a\u9053\u3002<\/p>\n

\u6b64\u5916\uff0c\u8bb8\u826f\u8c0b\u8fd8\u6709\u4e24\u4e2a\u5341\u5206“\u9192\u76ee”\u7684\u89c2\u70b9\uff1a\u4e00\u662f“\u4e07\u5146iSCSI\u57fa\u672c\u6d88\u9664\u4e86\u4e0e\u5149\u7ea4\u901a\u9053\u7684\u5dee\u8ddd”;\u4e8c\u662f“FCoE\u534f\u8bae\u63d0\u4f9b\u7684\u4f18\u52bf\u6bd4\u4e0d\u4e0aiSCSI”\u3002\u540c\u65f6\uff0c \u4ed6\u8fd8\u63d0\u51fa\u4e86“\u4ee5\u592a\u7f51\u5728\u4ee510\u500d\u7684\u901f\u5ea6\u5728\u589e\u957f(\u63071GbE\u523010GbE\uff0c\u518d\u523040GbE\u548c100GbE)\uff0c\u5149\u7ea4\u901a\u9053\u7684\u589e\u957f\u901f\u5ea6\u4e3a4\u500d(\u63074Gb\u52308Gb\uff0c\u518d \u523016Gb\u548c32Gb)”\uff0c\u800c\u4e14DCB(DCB\uff0c\u6570\u636e\u4e2d\u5fc3\u6865\u63a5\uff0c\u6216\u79f0DCE\uff0c\u6570\u636e\u4e2d\u5fc3\u4ee5\u592a\u7f51)\u53ea\u662f\u4e00\u4e2a\u89e3\u51b3\u65b9\u6848\u800c\u5df2\uff0c\u4f1a\u589e\u52a0\u6210\u672c\uff0c\u800ciSCSI\u5e76\u4e0d\u9700\u8981 DCB\u3002<\/p>\n

\u4ed6\u8ba4\u4e3a\uff0c\u4e07\u5146\u5b58\u50a8\u6b63\u5728\u65e5\u8d8b\u6210\u719f\uff0c\u80fd\u591f\u4ee3\u66ffN\u4e2a\u5343\u5146\u7aef\u53e3\uff0c\u5ba2\u6237\u9700\u8981\u66f4\u5c11\u7684\u4e07\u5146\u4ee5\u592a\u7f51\u9002\u914d\u5668\uff0c\u800c\u8bb8\u591a\u5b58\u50a8\u5e94\u7528\u5bf9\u6b64\u4e5f\u9700\u6c42\u9887\u591a——\u603b\u7684\u8bf4\u6765\uff0c\u8bb8\u826f\u8c0b\u8ba4\u4e3a\uff0c\u65e0\u8bba\u662f\u5149\u7ea4\u901a\u9053\u8fd8\u662f\u6b63\u8e0c\u8e87\u6ee1\u5fd7\u7684FCoE\uff0c\u90fd\u4e0d\u4f1a\u662f\u80fd\u591f\u4e0eiSCSI\uff0c\u5c24\u5176\u662f\u4e07\u5146\u4ee5\u592a\u7f51\u6240\u5e26\u6765\u7684\u5b58\u50a8\u4f18\u52bf\u6765\u5bf9\u6bd4\u3002 \u5bf9\u6b64\uff0c\u8bb8\u826f\u8c0b\u7528\u4e00\u7cfb\u5217\u7684\u6570\u636e\u6765\u8bd5\u56fe\u8bc1\u660e\u8fd9\u70b9\uff1a FC\u3001FCoE\u3001TCP(IPV4)\u3001iSCSI(1.9k MTU)\u3001iSCSI(9K MTU)\u7684\u6548\u7387\u5206\u522b\u4e3a97%\u300197.53%\u300196.17%\u300194.93%\u300191.81%\u300198.61%——\u867d\u7136\u5728\u91c7\u75281.5K\u4ee5\u592a\u7f51\u6846\u67b6\u65f6\uff0ciSCSI\u534f\u8bae\u6548\u7387\u4f4e\u4e8eFCoE 4%\uff0c\u4f46\u662f\u5f53\u91c7\u7528\u4e869K Jumbo\u6846\u67b6\u4e4b\u540e\uff0ciSCSI\u751a\u81f3\u80fd\u591f\u6bd4FCoE\u7684\u6548\u7387\u8fd8\u591a\u51fa2%\uff0c\u4e0e\u6b64\u540c\u65f6\uff0cFCoE\u53d7\u9650\u4e8e2.5K MTU\uff0c\u800c\u65e0\u6cd5\u4f7f\u7528\u5de8\u578b\u5e27\uff0c\u9664\u6b64\u4ee5\u5916\uff0c\u6211\u4eec\u4e5f\u4e0d\u96be\u53d1\u73b0\uff0c\u5728\u6548\u7387\u65b9\u9762\uff0c\u8bb8\u826f\u8c0b\u6240\u5217\u51fa\u7684\u6570\u636e\u663e\u793a\uff0c\u57fa\u672c\u4e0a\u6548\u7387\u975e\u5e38\u63a5\u8fd1\u3002<\/p>\n

\u800c\u5982\u679c\u57fa\u4e8e\u7edf\u4e00\u7f51\u7edc\u9002\u914d\u5668\u6784\u5efa\u7edf\u4e00\u7f51\u7edc(Unified Fabric)\u7684\u8bdd\uff0ciSCSI Offload\u3001FCoE\u7684\u6548\u7387\u548c\u541e\u5410\u91cf\u4e0a\uff0c\u4e5f\u65e0\u6cd5\u53d1\u73b0\u5de8\u5927\u7684\u6027\u80fd\u5dee\u5f02\uff0c\u5728\u591a\u6570\u65f6\u5019\uff0ciSCSI\u7684\u6027\u80fd\u53cd\u800c\u66f4\u52a0\u9ad8\u51fa\u5176\u4ed6\u4e24\u8005\u3002<\/p>\n

\u8bb8\u826f\u8c0b\u636e\u6b64\u8ba4\u4e3a\uff0ciSCSI\uff0c\u5c24\u5176\u662f\u4e07\u5146\u4ea7\u54c1\u6210\u4e3aiSCSI\u4e3b\u6d41\u4e4b\u540e\uff0c\u7528\u6237\u6ca1\u6709\u7406\u7531\u7ee7\u7eed\u91c7\u8d2dFC\uff0ciSCSI\u5b9e\u9645\u4e0a\u662f\u80fd\u591f\u8d1f\u62c5\u7edd\u5927\u591a\u6570\u5e94\u7528\u7684\uff0c\u6362\u53e5\u8bdd\u8bf4\uff0c\u8bb8\u826f\u8c0b\u8ba4\u4e3a\uff0c\u7528FCoE\uff0c\u8fd8\u4e0d\u5982\u5168\u9762\u8f6c\u578b\u5230iSCSI\u4e0a\u53bb——\u4f46\u95ee\u9898\u662f\uff0c\u5982\u679c\u5149\u7ea4\u901a\u9053\u5df2\u7ecf\u5728\u4f01\u4e1a\u91cc\u6210\u4e3a\u6838\u5fc3\u4e86\u5462?<\/p>\n

\u8bb8\u826f\u8c0b\u8868\u793a\uff1a“\u8fd9\u8981\u4ece\u4e24\u4e2a\u89d2\u5ea6\u6765\u8c08\uff0c\u7b2c\u4e00\u4e2a\u89d2\u5ea6\uff0c\u5982\u679c\u5df2\u7ecf\u662f\u865a\u62df\u5316\u7684\u7528\u6237\uff0c\u7528\u4e86FC\uff0c\u600e\u4e48\u8f6c\u5411iSCSI?\u4ed6\u53ef\u4ee5\u7528StorageVmotion\uff0c\u53ef\u4ee5\u4e0d \u7528\u505c\u6b62\u865a\u62df\u673a\uff0c\u865a\u62df\u5316\u7684\u6280\u672f\u5df2\u7ecf\u51c6\u5907\u597d\u8fd9\u4e2a\u80fd\u529b\u3002\u53e6\u4e00\u4e2a\u89d2\u5ea6\uff0c\u50cf\u4e9a\u4fe1\u8fd9\u6837\u7684\u4f01\u4e1a\u5df2\u7ecf\u5728\u5168\u9762\u63a5\u53d7iSCSI\uff0c\u8fd9\u8bf4\u660e\u8fd9\u662f\u6709\u53ef\u80fd\u7684\u3002\u6234\u5c14\u6709\u4e00\u4e2a\u670d\u52a1\u90e8 \u95e8\uff0cICS\uff0c\u8bb8\u591a\u7684\u8d44\u6df1\u5b58\u50a8\u67b6\u6784\u5e08\u88ab\u8058\u8bf7\u56de\u6765\u6765\u6ee1\u8db3\u7528\u6237\u7684\u9700\u8981\uff0c\u5e2e\u52a9\u4ed6\u4eec\u4eceSAN1.0\u8f6c\u53d8\u5230SAN2.0\u4e0a\u53bb\u3002”——\u8fd9\u4f4diSCSI\u7684\u575a\u5b9a\u652f\u6301\u8005\u8868\u793a\uff0c \u6709\u8db3\u591f\u7684\u6280\u672f\u548c\u6280\u672f\u5b9e\u73b0\u80fd\u591f\u5e2e\u52a9\u7528\u6237\u8f6c\u5411iSCSI\uff0c\u6211\u4eec\u751a\u81f3\u53ef\u4ee5\u5c06\u6b64\u7406\u89e3\u4e3a\uff1a\u5149\u7ea4\u901a\u9053\u53ef\u4ee5\u88ab\u675f\u4e4b\u9ad8\u9601\u4e86\u3002\u5f53\u7136\uff0c\u6234\u5c14\u7684\u54a8\u8be2\u90e8\u5206\u6216\u8005\u53e6\u6709\u4ed6\u6cd5\u3002<\/p>\n

\u4e07\u5146\u4e0e\u865a\u62df\u5316\uff1a\u5411iSCSI\u5e73\u53f0\u7684\u8fc1\u79fb\u5df2\u7ecf\u5f00\u59cb<\/strong><\/p>\n

\u8bb8\u826f\u8c0b\u518d\u6b21\u786e\u8ba4\u4e86\u6234\u5c14\u5c06\u5728\u4eca\u5e74\u5e74\u5e95\u6b63\u5f0f\u63a8\u51fa10GbE\u4ea7\u54c1\u7684\u8ba1\u5212\uff0c\u800c\u4e14\u4ed6\u8ba4\u4e3a\uff0c\u4e07\u5146\u548c\u6234\u5c14EqualLogic\u7684\u6a2a\u5411\u6269\u5c55\u5c06\u4f1a\u5e26\u52a8\u6234\u5c14\u7684\u5b58\u50a8\u53d1\u5c55\u7684\u66f4\u597d\u3002<\/p>\n

\u5728\u6f14\u8bb2\u4e2d\uff0c\u8bb8\u826f\u8c0b\u8868\u793a\uff0c\u7528\u6237\u5411iSCSI\u5e73\u53f0\u7684\u8fc1\u79fb\u5df2\u7ecf\u5f00\u59cb\uff0c\u5728Forrester\u54a8\u8be2\u516c\u53f82008\u5e749\u6708\u7684\u8c03\u67e5\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\uff0c\u5728\u8c03\u67e5\u7684\u53d7\u8bbf\u8005\u4e2d\uff0c\u4e2d \u56fd\u7528\u6237\u5bf9\u4e8eiSCSI\u7684\u91c7\u7528\u7387\u6700\u9ad8\uff0c\u5df2\u7ecf\u9ad8\u8fbe67%\uff0c\u800c\u7f8e\u56fd\u3001\u82f1\u56fd\u4e5f\u5206\u522b\u4e3a52%\u548c44%——\u5f53\u7136\uff0c\u6211\u4eec\u5728\u8fd9\u91cc\u9700\u8981\u8003\u8651\u5230\u6b27\u7f8e\u56fd\u5bb6\u5728\u5149\u7ea4\u901a\u9053\u548cIT\u7cfb\u7edf\u5efa \u8bbe\u4e0a\u957f\u671f\u3001\u6210\u719f\u7684\u53d1\u5c55\uff0c\u5bf9\u4e8eiSCSI\u6765\u8bf4\uff0c\u56fa\u6709\u5927\u91cf\u5149\u7ea4\u901a\u9053\u7684\u6b27\u7f8e\u5e02\u573a\u663e\u7136\u662f\u4e00\u5757\u96be\u5543\u7684\u9aa8\u5934\u3002<\/p>\n

\u4e8b\u5b9e\u4e0a\uff0c\u6b63\u662f\u4e07\u5146\u7684\u51fa\u73b0\uff0c\u4f7f\u5f97\u901a\u8fc7\u4ee5\u592a\u7f51\u6574\u5408\u6570\u636e\u4e2d\u5fc3\u53d8\u6210\u53ef\u80fd\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u4e07\u5146\u4ee5\u592a\u7f51\u80fd\u591f\u7b80\u5316\u670d\u52a1\u5668\u3001\u7f51\u7edc\u548c\u5b58\u50a8\u57fa\u7840\u8bbe\u65bd\uff0c\u51cf\u5c11\u7ebf\u7f06\u548c\u670d\u52a1\u5668\u9002\u914d\u5668\u7684 \u6570\u636e\u91cf\uff0c\u51cf\u5c11\u8d44\u672c\u652f\u51fa\u548c\u7ba1\u7406\u6210\u672c\uff0c\u51cf\u5c11\u670d\u52a1\u5668\u7535\u6e90\u548c\u6563\u70ed\u6210\u672c——\u5c24\u5176\u662f\uff0c\u5200\u7247\u670d\u52a1\u5668\u548c\u670d\u52a1\u5668\u865a\u62df\u5316\u5e26\u52a8\u7740\u5e26\u5bbd\u7684\u6574\u5408\uff0c\u4e07\u5146\u4ee5\u592a\u7f51\u6b63\u7b26\u5408\u8fd9\u4e00\u6f6e\u6d41\uff0c\u56e0\u6b64\uff0c\u4e07 \u5146\u4ee5\u592a\u7f51\u548c\u865a\u62df\u5316\u7275\u52a8\u7740\u7528\u6237\u7684\u5b58\u50a8\u5e73\u53f0\u5411iSCSI\u5e73\u53f0\u7684\u8fc1\u79fb\u3002<\/p>\n

\u5728\u53e6\u4e00\u65b9\u9762\uff0c\u8bb8\u826f\u8c0b\u8ba4\u4e3a\uff0c\u865a\u62df\u5b58\u50a8\u6280\u672f\uff0c\u5c24\u5176\u662fScale Out\u6a2a\u5411\u6269\u5c55\u6280\u672f\u4e3aSAN\u589e\u52a0\u4e86\u4e00\u4e2a\u65b0\u7684\u7ef4\u5ea6——\u5bf9\u4e8e\u8fd9\u4e00\u70b9\u6765\u8bf4\uff0cDell EqualLogic\u4e00\u76f4\u6240\u5021\u5bfc\u7684\u7ebf\u6027\u6269\u5c55\u548cSAN 2.0\u6539\u53d8\u5df2\u7ecf\u5728\u4e4b\u524d\u7684\u62a5\u9053\u4e2d\u88ab\u6211\u4eec\u591a\u6b21\u63d0\u53ca\uff0c\u865a\u62df\u5316\u7684\u5b58\u50a8\u8d8b\u52bf\uff0c\u5728Dell EqualLogic\u7684\u4ea7\u54c1\u7ebf\u4e2d\uff0c\u4e00\u76f4\u4ee5\u6765\u5c31\u5f97\u5230\u4e86\u5f88\u597d\u7684\u8d2f\u5f7b\uff0c\u4e14\u80fd\u591f\u4e3a\u4e1a\u52a1\u5e94\u7528\u63d0\u4f9b\u66f4\u4f73\u7684\u6027\u80fd\u548c\u66f4\u5408\u7406\u7684\u4ef7\u683c\u3002<\/p>\n

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