{"id":476602,"date":"2023-08-09T07:31:20","date_gmt":"2023-08-09T07:31:20","guid":{"rendered":""},"modified":"2023-09-05T11:13:03","modified_gmt":"2023-09-05T11:13:03","slug":"data-availability","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/data-availability\/","title":{"rendered":"\u6570\u636e\u53ef\u7528\u6027"},"content":{"rendered":"<p>\u6570\u636e\u53ef\u7528\u6027\u662f\u6307\u6570\u636e\u53ef\u8bbf\u95ee\u548c\u53ef\u4f9b\u4f7f\u7528\u7684\u7a0b\u5ea6\uff0c\u65e0\u8bba\u6570\u636e\u7684\u7269\u7406\u4f4d\u7f6e\u5982\u4f55\u3002\u8fd9\u4e2a\u6982\u5ff5\u662f\u4fe1\u606f\u7ba1\u7406\u7cfb\u7edf\u3001\u6570\u636e\u5e93\u7ba1\u7406\u548c\u4e91\u5b58\u50a8\u89e3\u51b3\u65b9\u6848\u7684\u4e00\u4e2a\u91cd\u8981\u65b9\u9762\u3002<\/p>\n<h2>\u6570\u636e\u53ef\u7528\u6027\u7684\u51fa\u73b0\u548c\u6f14\u53d8<\/h2>\n<p>\u968f\u7740\u8ba1\u7b97\u673a\u7cfb\u7edf\u7684\u51fa\u73b0\u548c\u7ba1\u7406\u6570\u5b57\u4fe1\u606f\u7684\u9700\u8981\uff0c\u6570\u636e\u53ef\u7528\u6027\u7684\u6982\u5ff5\u6210\u4e3a\u4eba\u4eec\u5173\u6ce8\u7684\u7126\u70b9\u3002\u5728\u8ba1\u7b97\u673a\u65f6\u4ee3\u4e4b\u524d\uff0c\u6570\u636e\u5927\u591a\u662f\u624b\u52a8\u5b58\u50a8\u548c\u7ba1\u7406\u7684\uff0c\u5bfc\u81f4\u96be\u4ee5\u786e\u4fdd\u5176\u53ef\u7528\u6027\u3002<\/p>\n<p>\u6570\u636e\u53ef\u7528\u6027\u7684\u9996\u6b21\u63d0\u53ca\u53ef\u4ee5\u8ffd\u6eaf\u5230 20 \u4e16\u7eaa 60 \u5e74\u4ee3\u521d\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf (DBMS) 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tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u9ad8\u53ef\u7528\u6027<\/td>\n<td>99-99.99%<\/td>\n<\/tr>\n<tr>\n<td>\u6301\u7eed\u53ef\u7528\u6027<\/td>\n<td>99.999%<\/td>\n<\/tr>\n<tr>\n<td>\u59cb\u7ec8\u5728\u7ebf\u7684\u53ef\u7528\u6027<\/td>\n<td>100%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u9ad8\u53ef\u7528\u6027\u6d89\u53ca\u8bbe\u8ba1\u4e3a\u7a33\u5065\u4e14\u6709\u5f39\u6027\u7684\u7cfb\u7edf\uff0c\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11\u505c\u673a\u65f6\u95f4\u3002\u8fde\u7eed\u53ef\u7528\u6027\u66f4\u8fdb\u4e00\u6b65\uff0c\u76ee\u6807\u662f\u51e0\u4e4e\u6ca1\u6709\u505c\u673a\u65f6\u95f4\u3002\u59cb\u7ec8\u5728\u7ebf\u53ef\u7528\u6027\u81f4\u529b\u4e8e\u5b9e\u73b0 100% \u7684\u6b63\u5e38\u8fd0\u884c\u65f6\u95f4\uff0c\u4f46\u5b9e\u9645\u4e0a\uff0c\u7531\u4e8e\u5fc5\u8981\u7684\u7ef4\u62a4\u7b49\u56e0\u7d20\uff0c\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u53ef\u80fd\u5177\u6709\u6311\u6218\u6027\u3002<\/p>\n<h2>\u6570\u636e\u53ef\u7528\u6027\u7684\u4f7f\u7528\u548c\u6311\u6218<\/h2>\n<p>\u6570\u636e\u53ef\u7528\u6027\u5e94\u7528\u4e8e\u5404\u4e2a\u9886\u57df\uff0c\u5305\u62ec\u91d1\u878d\u3001\u533b\u7597\u4fdd\u5065\u3001\u6280\u672f\u548c\u7535\u5b50\u5546\u52a1\u7b49\u3002\u7136\u800c\uff0c\u786e\u4fdd\u6570\u636e\u53ef\u7528\u6027\u5e76\u975e\u6ca1\u6709\u6311\u6218\u3002\u8fd9\u4e9b\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u786c\u4ef6\u6216\u8f6f\u4ef6\u6545\u969c<\/strong><\/li>\n<li><strong>\u7f51\u7edc\u5b89\u5168\u5a01\u80c1<\/strong><\/li>\n<li><strong>\u4eba\u4e3a\u9519\u8bef<\/strong><\/li>\n<li><strong>\u81ea\u7136\u707e\u5bb3<\/strong><\/li>\n<\/ul>\n<p>\u4e3a\u4e86\u514b\u670d\u8fd9\u4e9b\u6311\u6218\uff0c\u7ec4\u7ec7\u5b9e\u65bd\u4e86\u591a\u79cd\u7b56\u7565\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5197\u4f59\u7cfb\u7edf<\/strong><\/li>\n<li><strong>\u5b9a\u671f\u5907\u4efd<\/strong><\/li>\n<li><strong>\u5b89\u5168\u6570\u636e\u5904\u7406\u5b9e\u8df5<\/strong><\/li>\n<li><strong>\u707e\u96be\u6062\u590d\u8ba1\u5212<\/strong><\/li>\n<\/ul>\n<h2>\u6570\u636e\u53ef\u7528\u6027\uff1a\u6bd4\u8f83\u548c\u7279\u5f81<\/h2>\n<p>\u4e0e\u5176\u4ed6\u76f8\u5173\u672f\u8bed\u76f8\u6bd4\uff0c\u6570\u636e\u53ef\u7528\u6027\u662f\u4e00\u4e2a\u72ec\u7279\u7684\u6982\u5ff5\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u6982\u5ff5<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6570\u636e\u53ef\u7528\u6027<\/td>\n<td>\u6307\u6570\u636e\u53ef\u8bbf\u95ee\u5e76\u53ef\u4f9b\u4f7f\u7528<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u7684\u5b8c\u6574\u6027<\/td>\n<td>\u786e\u4fdd\u6570\u636e\u5728\u8fd0\u8f93\u8fc7\u7a0b\u4e2d\u51c6\u786e\u4e14\u4e0d\u53d8<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u5b89\u5168<\/td>\n<td>\u4fdd\u62a4\u6570\u636e\u514d\u906d\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u548c\u7834\u574f<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u6301\u4e45\u6027<\/td>\n<td>\u786e\u4fdd\u6570\u636e\u5b58\u50a8\u5230\u7cfb\u7edf\u540e\u4e0d\u4f1a\u4e22\u5931<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u6570\u636e\u53ef\u7528\u6027\u7684\u672a\u6765\u5c55\u671b<\/h2>\n<p>\u968f\u7740\u6570\u636e\u8d8a\u6765\u8d8a\u878d\u5165\u6211\u4eec\u7684\u6570\u5b57\u751f\u6d3b\uff0c\u786e\u4fdd\u5176\u53ef\u7528\u6027\u5c06\u7ee7\u7eed\u6210\u4e3a\u91cd\u4e2d\u4e4b\u91cd\u3002\u6570\u636e\u53ef\u7528\u6027\u7684\u672a\u6765\u53ef\u80fd\u4f1a\u51fa\u73b0\u66f4\u5148\u8fdb\u7684\u6280\u672f\u548c\u7b56\u7565\u7684\u53d1\u5c55\uff0c\u4ee5\u7ef4\u6301\u6b63\u5e38\u8fd0\u884c\u65f6\u95f4\u3001\u4fdd\u62a4\u6570\u636e\u5e76\u786e\u4fdd\u5728\u6570\u636e\u4e22\u5931\u65f6\u5feb\u901f\u6062\u590d\u3002<\/p>\n<p>\u4eba\u5de5\u667a\u80fd\u548c\u673a\u5668\u5b66\u4e60\u53ef\u4ee5\u901a\u8fc7\u9884\u6d4b\u548c\u51cf\u8f7b\u6f5c\u5728\u98ce\u9669\u6765\u5728\u7ba1\u7406\u6570\u636e\u53ef\u7528\u6027\u65b9\u9762\u53d1\u6325\u91cd\u8981\u4f5c\u7528\u3002\u6b64\u5916\uff0c\u533a\u5757\u94fe\u6280\u672f\u53ef\u7528\u4e8e\u521b\u5efa\u53bb\u4e2d\u5fc3\u5316\u6570\u636e\u5e93\uff0c\u4ee5\u63d0\u9ad8\u6570\u636e\u53ef\u7528\u6027\u548c\u5b89\u5168\u6027\u3002<\/p>\n<h2>\u4ee3\u7406\u670d\u52a1\u5668\u548c\u6570\u636e\u53ef\u7528\u6027<\/h2>\n<p>\u4ee3\u7406\u670d\u52a1\u5668\u4f1a\u5bf9\u6570\u636e\u53ef\u7528\u6027\u4ea7\u751f\u6df1\u8fdc\u7684\u5f71\u54cd\u3002\u5b83\u4eec\u5145\u5f53\u7528\u6237\u548c\u4e92\u8054\u7f51\u4e4b\u95f4\u7684\u4e2d\u4ecb\uff0c\u63d0\u4f9b\u5404\u79cd\u4f18\u52bf\uff0c\u4f8b\u5982\u63d0\u9ad8\u5b89\u5168\u6027\u3001\u63d0\u9ad8\u6027\u80fd\u548c\u589e\u5f3a\u9690\u79c1\u6027\u3002\u5728\u6570\u636e\u53ef\u7528\u6027\u65b9\u9762\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u7f13\u5b58\u6570\u636e\uff0c\u4ece\u800c\u589e\u5f3a\u5176\u53ef\u8bbf\u95ee\u6027\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u7ec4\u7ec7\u7684\u670d\u52a1\u5668\u51fa\u73b0\u6545\u969c\uff0c\u7528\u6237\u4ecd\u7136\u53ef\u4ee5\u8bbf\u95ee\u4ee3\u7406\u670d\u52a1\u5668\u4e0a\u7f13\u5b58\u7684\u6570\u636e\uff0c\u4ece\u800c\u4fdd\u8bc1\u6570\u636e\u7684\u53ef\u7528\u6027\u3002\u6b64\u5916\uff0c\u53cd\u5411\u4ee3\u7406\u53ef\u4ee5\u5c06\u7f51\u7edc\u8d1f\u8f7d\u5206\u5e03\u5230\u591a\u4e2a\u670d\u52a1\u5668\u4e0a\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6574\u4f53\u53ef\u9760\u6027\u548c\u53ef\u7528\u6027\u3002<\/p>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<p>\u6709\u5173\u6570\u636e\u53ef\u7528\u6027\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u8d44\u6e90\uff1a<\/p>\n<ol>\n<li><a href=\"https:\/\/www.dataversity.net\/data-availability-important\/#\" target=\"_new\" rel=\"noopener nofollow\">\u6570\u636e\u53ef\u7528\u6027\u53ca\u5176\u91cd\u8981\u6027<\/a><\/li>\n<li><a href=\"https:\/\/www.sciencedirect.com\/topics\/computer-science\/data-availability\" target=\"_new\" rel=\"noopener nofollow\">\u4e86\u89e3\u6570\u636e\u53ef\u7528\u6027<\/a><\/li>\n<li><a href=\"https:\/\/www.ibm.com\/cloud\/learn\/data-availability\" target=\"_new\" rel=\"noopener nofollow\">\u63d0\u9ad8\u6570\u636e\u53ef\u7528\u6027<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/cn\/blog\/proxy-servers-data-availability\/\" target=\"_new\" rel=\"noopener\">\u4ee3\u7406\u670d\u52a1\u5668\u5728\u6570\u636e\u53ef\u7528\u6027\u4e2d\u7684\u4f5c\u7528<\/a><\/li>\n<\/ol>","protected":false},"featured_media":476603,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476602","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Data Availability: A Critical Element of Information Management<\/mark>","faq_items":[{"question":"What is data availability?","answer":"<p>Data availability refers to the degree to which data is accessible and ready for use, regardless of the physical location of the data. It's a critical aspect of information management systems, database management, and cloud storage solutions.<\/p>"},{"question":"What is the history of data availability?","answer":"<p>The concept of data availability originated with the advent of computer systems and the need to manage digital information. It came into the spotlight in the early 1960s with the development of database management systems. As businesses started relying more on data-driven insights, the need for data to be readily available became more prominent.<\/p>"},{"question":"How does data availability work?","answer":"<p>Data availability relies on system architecture and the strategies implemented for data management. Key elements include system uptime, data redundancy, regular backups, disaster recovery planning, and data distribution. In a cloud-based system, for example, data is often distributed across multiple servers in different locations.<\/p>"},{"question":"What are the key features of data availability?","answer":"<p>The key features of data availability include reliability (systems ensure data is available when needed), robustness (systems can withstand failures), resiliency (systems can recover quickly from any failures), and security (data is secure and only accessible to authorized individuals).<\/p>"},{"question":"What types of data availability exist?","answer":"<p>Data availability is often categorized into High Availability (99-99.99%), Continuous Availability (99.999%), and Always-On Availability (striving for 100% but realistically challenging due to necessary maintenance).<\/p>"},{"question":"What challenges are related to data availability and how can they be overcome?","answer":"<p>Challenges to data availability can include hardware or software failures, cybersecurity threats, human error, and natural disasters. Organizations can overcome these through redundant systems, regular backups, secure data handling practices, and robust disaster recovery plans.<\/p>"},{"question":"What future technologies could impact data availability?","answer":"<p>Future technologies like artificial intelligence, machine learning, and blockchain could significantly impact data availability. These technologies could help predict and mitigate risks, thus enhancing data availability and security.<\/p>"},{"question":"How do proxy servers enhance data availability?","answer":"<p>Proxy servers act as intermediaries between users and the internet. They can cache data, enhancing its accessibility. If an organization's server is down, users can still access the data cached on the proxy server, thus ensuring data availability. Reverse proxies can also distribute the network load across multiple servers, improving the system's overall reliability and availability.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/476602","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/476602\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/476603"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=476602"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}