Google Git
Sign in
apache / iotdb-website / 7982e5782a64b7ebd6f762a9f51c33bd829bc3ee / . / zh / UserGuide / Master / User-Manual / Tiered-Storage_timecho.html
blob: 0b36ba156b7804884bd198c940148b7e65351f69 [file] [log] [blame]
<!doctype html>
<html lang="zh-CN" data-theme="light">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1" />
<meta name="generator" content="VuePress 2.0.0-beta.66" />
<meta name="theme" content="VuePress Theme Hope" />
<link rel="alternate" hreflang="en-us" href="https://iotdb.apache.org/UserGuide/Master/User-Manual/Tiered-Storage_timecho.html"><meta property="og:url" content="https://iotdb.apache.org/zh/UserGuide/Master/User-Manual/Tiered-Storage_timecho.html"><meta property="og:site_name" content="IoTDB Website"><meta property="og:title" content="多级存储"><meta property="og:description" content="概述 多级存储功能向用户提供多种存储介质管理的能力，用户可以使用多级存储功能为 IoTDB 配置不同类型的存储介质，并为存储介质进行分级。具体的，在 IoTDB 中，多级存储的配置体现为多目录的管理。用户可以将多个存储目录归为同一类，作为一个“层级”向 IoTDB 中配置，这种“层级”我们称之为 storage tier；同时，用户可以根据数据的冷热进..."><meta property="og:type" content="article"><meta property="og:locale" content="zh-CN"><meta property="og:locale:alternate" content="en-US"><meta property="og:updated_time" content="2023-10-25T10:37:38.000Z"><meta property="article:modified_time" content="2023-10-25T10:37:38.000Z"><script type="application/ld+json">{"@context":"https://schema.org","@type":"Article","headline":"多级存储","image":[""],"dateModified":"2023-10-25T10:37:38.000Z","author":[]}</script><link rel="icon" href="/favicon.ico"><meta name="Description" content="Apache IoTDB: Time Series Database for IoT"><meta name="Keywords" content="TSDB, time series, time series database, IoTDB, IoT database, IoT data management,时序数据库, 时间序列管理, IoTDB, 物联网数据库, 实时数据库, 物联网数据管理, 物联网数据"><meta name="baidu-site-verification" content="wfKETzB3OT"><meta name="google-site-verification" content="mZWAoRY0yj_HAr-s47zHCGHzx5Ju-RVm5wDbPnwQYFo"><title>多级存储 | IoTDB Website</title><meta name="description" content="概述 多级存储功能向用户提供多种存储介质管理的能力，用户可以使用多级存储功能为 IoTDB 配置不同类型的存储介质，并为存储介质进行分级。具体的，在 IoTDB 中，多级存储的配置体现为多目录的管理。用户可以将多个存储目录归为同一类，作为一个“层级”向 IoTDB 中配置，这种“层级”我们称之为 storage tier；同时，用户可以根据数据的冷热进...">
<style>
:root {
--bg-color: #fff;
}
html[data-theme="dark"] {
--bg-color: #1d1e1f;
}
html,
body {
background: var(--bg-color);
}
</style>
<script>
const userMode = localStorage.getItem("vuepress-theme-hope-scheme");
const systemDarkMode =
window.matchMedia &&
window.matchMedia("(prefers-color-scheme: dark)").matches;
if (userMode === "dark" || (userMode !== "light" && systemDarkMode)) {
document.documentElement.setAttribute("data-theme", "dark");
}
</script>
<link rel="preload" href="/assets/style-35dc1830.css" as="style"><link rel="stylesheet" href="/assets/style-35dc1830.css">
<link rel="modulepreload" href="/assets/app-5cdcb249.js"><link rel="modulepreload" href="/assets/Tiered-Storage_timecho.html-326423ba.js"><link rel="modulepreload" href="/assets/Tiered-Storage_timecho.html-55a75d23.js">
</head>
<body>
<div id="app"><!--[--><!--[--><!--[--><span tabindex="-1"></span><a href="#main-content" class="vp-skip-link sr-only">跳至主要內容</a><!--]--><!--[--><div class="theme-container no-sidebar has-toc"><!--[--><header id="navbar" class="vp-navbar hide-icon"><div class="vp-navbar-start"><button type="button" class="vp-toggle-sidebar-button" title="Toggle Sidebar"><span class="icon"></span></button><!--[--><!----><!--]--><!--[--><a class="vp-link vp-brand" href="/zh/"><img class="vp-nav-logo" src="/logo.png" alt="IoTDB Website"><!----><span class="vp-site-name hide-in-pad">IoTDB Website</span></a><!--]--><!--[--><!----><!--]--></div><div class="vp-navbar-center"><!--[--><!----><!--]--><!--[--><!--]--><!--[--><!----><!--]--></div><div class="vp-navbar-end"><!--[--><!----><!--]--><!--[--><div id="docsearch-container"></div><nav class="vp-nav-links"><div class="nav-item hide-in-mobile"><div class="dropdown-wrapper"><button type="button" class="dropdown-title" aria-label="文档"><span class="title"><!---->文档</span><span class="arrow"></span><ul class="nav-dropdown"><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/UserGuide/V1.2.x/QuickStart/QuickStart.html"><!---->v1.2.x<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/UserGuide/V1.1.x/QuickStart/QuickStart.html"><!---->v1.1.x<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/UserGuide/V1.0.x/QuickStart/QuickStart.html"><!---->v1.0.x<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/UserGuide/V0.13.x/QuickStart/QuickStart.html"><!---->v0.13.x<!----></a></li></ul></button></div></div><div class="nav-item hide-in-mobile"><a href="https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=177051872" rel="noopener noreferrer" target="_blank" aria-label="系统设计" class="nav-link"><!---->系统设计<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="nav-item hide-in-mobile"><a class="vp-link nav-link" href="/zh/Download/"><!---->下载<!----></a></div><div class="nav-item hide-in-mobile"><div class="dropdown-wrapper"><button type="button" class="dropdown-title" aria-label="社区"><span class="title"><!---->社区</span><span class="arrow"></span><ul class="nav-dropdown"><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Community/About.html"><!---->关于社区<!----></a></li><li class="dropdown-item"><a href="https://cwiki.apache.org/confluence/display/iotdb" rel="noopener noreferrer" target="_blank" aria-label="Wiki" class="nav-link"><!---->Wiki<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Community/Community-Project-Committers.html"><!---->开发人员<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Community/Community-Powered-By.html"><!---->技术支持<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/Community/Materials.html"><!---->活动与报告<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Community/Feedback.html"><!---->交流与反馈<!----></a></li></ul></button></div></div><div class="nav-item hide-in-mobile"><div class="dropdown-wrapper"><button type="button" class="dropdown-title" aria-label="开发"><span class="title"><!---->开发</span><span class="arrow"></span><ul class="nav-dropdown"><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Development/VoteRelease.html"><!---->如何投票<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Development/HowToCommit.html"><!---->如何提交代码<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Development/HowToJoin.html"><!---->成为Contributor<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Development/Committer.html"><!---->成为Committer<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Development/ContributeGuide.html"><!---->项目开发指南<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Development/HowtoContributeCode.html"><!---->技术贡献指南<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Development/format-changelist.html"><!---->TsFile的更改列表<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link" href="/zh/Development/rpc-changelist.html"><!---->RPC变更清单<!----></a></li></ul></button></div></div><div class="nav-item hide-in-mobile"><div class="dropdown-wrapper"><button type="button" class="dropdown-title" aria-label="ASF"><span class="title"><!---->ASF</span><span class="arrow"></span><ul class="nav-dropdown"><li class="dropdown-item"><a href="https://www.apache.org/" rel="noopener noreferrer" target="_blank" aria-label="基金会" class="nav-link"><!---->基金会<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></li><li class="dropdown-item"><a href="https://www.apache.org/licenses/" rel="noopener noreferrer" target="_blank" aria-label="许可证" class="nav-link"><!---->许可证<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></li><li class="dropdown-item"><a href="https://www.apache.org/security/" rel="noopener noreferrer" target="_blank" aria-label="安全" class="nav-link"><!---->安全<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></li><li class="dropdown-item"><a href="https://www.apache.org/foundation/sponsorship.html" rel="noopener noreferrer" target="_blank" aria-label="赞助" class="nav-link"><!---->赞助<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></li><li class="dropdown-item"><a href="https://www.apache.org/foundation/thanks.html" rel="noopener noreferrer" target="_blank" aria-label="致谢" class="nav-link"><!---->致谢<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></li><li class="dropdown-item"><a href="https://www.apache.org/events/current-event" rel="noopener noreferrer" target="_blank" aria-label="活动" class="nav-link"><!---->活动<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></li></ul></button></div></div></nav><div class="nav-item"><div class="dropdown-wrapper i18n-dropdown"><button type="button" class="dropdown-title" aria-label="选择语言"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon i18n-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="i18n icon" style="width:1rem;height:1rem;vertical-align:middle;"><path d="M379.392 460.8 494.08 575.488l-42.496 102.4L307.2 532.48 138.24 701.44l-71.68-72.704L234.496 460.8l-45.056-45.056c-27.136-27.136-51.2-66.56-66.56-108.544h112.64c7.68 14.336 16.896 27.136 26.112 35.84l45.568 46.08 45.056-45.056C382.976 312.32 409.6 247.808 409.6 204.8H0V102.4h256V0h102.4v102.4h256v102.4H512c0 70.144-37.888 161.28-87.04 210.944L378.88 460.8zM576 870.4 512 1024H409.6l256-614.4H768l256 614.4H921.6l-64-153.6H576zM618.496 768h196.608L716.8 532.48 618.496 768z"></path></svg><!--]--><span class="arrow"></span><ul class="nav-dropdown"><li class="dropdown-item"><a class="vp-link nav-link" href="/UserGuide/Master/User-Manual/Tiered-Storage_timecho.html"><!---->English<!----></a></li><li class="dropdown-item"><a class="vp-link nav-link active" href="/zh/UserGuide/Master/User-Manual/Tiered-Storage_timecho.html"><!---->简体中文<!----></a></li></ul></button></div></div><div class="nav-item hide-in-mobile"><button type="button" id="appearance-switch"><svg xmlns="http://www.w3.org/2000/svg" class="icon auto-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="auto icon" style="display:block;"><path d="M512 992C246.92 992 32 777.08 32 512S246.92 32 512 32s480 214.92 480 480-214.92 480-480 480zm0-840c-198.78 0-360 161.22-360 360 0 198.84 161.22 360 360 360s360-161.16 360-360c0-198.78-161.22-360-360-360zm0 660V212c165.72 0 300 134.34 300 300 0 165.72-134.28 300-300 300z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" class="icon dark-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="dark icon" style="display:none;"><path d="M524.8 938.667h-4.267a439.893 439.893 0 0 1-313.173-134.4 446.293 446.293 0 0 1-11.093-597.334A432.213 432.213 0 0 1 366.933 90.027a42.667 42.667 0 0 1 45.227 9.386 42.667 42.667 0 0 1 10.24 42.667 358.4 358.4 0 0 0 82.773 375.893 361.387 361.387 0 0 0 376.747 82.774 42.667 42.667 0 0 1 54.187 55.04 433.493 433.493 0 0 1-99.84 154.88 438.613 438.613 0 0 1-311.467 128z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" class="icon light-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="light icon" style="display:none;"><path d="M952 552h-80a40 40 0 0 1 0-80h80a40 40 0 0 1 0 80zM801.88 280.08a41 41 0 0 1-57.96-57.96l57.96-58a41.04 41.04 0 0 1 58 58l-58 57.96zM512 752a240 240 0 1 1 0-480 240 240 0 0 1 0 480zm0-560a40 40 0 0 1-40-40V72a40 40 0 0 1 80 0v80a40 40 0 0 1-40 40zm-289.88 88.08-58-57.96a41.04 41.04 0 0 1 58-58l57.96 58a41 41 0 0 1-57.96 57.96zM192 512a40 40 0 0 1-40 40H72a40 40 0 0 1 0-80h80a40 40 0 0 1 40 40zm30.12 231.92a41 41 0 0 1 57.96 57.96l-57.96 58a41.04 41.04 0 0 1-58-58l58-57.96zM512 832a40 40 0 0 1 40 40v80a40 40 0 0 1-80 0v-80a40 40 0 0 1 40-40zm289.88-88.08 58 57.96a41.04 41.04 0 0 1-58 58l-57.96-58a41 41 0 0 1 57.96-57.96z"></path></svg></button></div><div class="nav-item vp-repo"><a class="vp-repo-link" href="https://github.com/apache/iotdb" target="_blank" rel="noopener noreferrer" aria-label="GitHub"><svg xmlns="http://www.w3.org/2000/svg" class="icon github-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="github icon" style="width:1.25rem;height:1.25rem;vertical-align:middle;"><path d="M511.957 21.333C241.024 21.333 21.333 240.981 21.333 512c0 216.832 140.544 400.725 335.574 465.664 24.49 4.395 32.256-10.07 32.256-23.083 0-11.69.256-44.245 0-85.205-136.448 29.61-164.736-64.64-164.736-64.64-22.315-56.704-54.4-71.765-54.4-71.765-44.587-30.464 3.285-29.824 3.285-29.824 49.195 3.413 75.179 50.517 75.179 50.517 43.776 75.008 114.816 53.333 142.762 40.79 4.523-31.66 17.152-53.377 31.19-65.537-108.971-12.458-223.488-54.485-223.488-242.602 0-53.547 19.114-97.323 50.517-131.67-5.035-12.33-21.93-62.293 4.779-129.834 0 0 41.258-13.184 134.912 50.346a469.803 469.803 0 0 1 122.88-16.554c41.642.213 83.626 5.632 122.88 16.554 93.653-63.488 134.784-50.346 134.784-50.346 26.752 67.541 9.898 117.504 4.864 129.834 31.402 34.347 50.474 78.123 50.474 131.67 0 188.586-114.73 230.016-224.042 242.09 17.578 15.232 33.578 44.672 33.578 90.454v135.85c0 13.142 7.936 27.606 32.854 22.87C862.25 912.597 1002.667 728.747 1002.667 512c0-271.019-219.648-490.667-490.71-490.667z"></path></svg></a></div><!--]--><!--[--><!----><!--]--><button type="button" class="vp-toggle-navbar-button" aria-label="Toggle Navbar" aria-expanded="false" aria-controls="nav-screen"><span><span class="vp-top"></span><span class="vp-middle"></span><span class="vp-bottom"></span></span></button></div></header><!----><!--]--><!----><div class="toggle-sidebar-wrapper"><span class="arrow start"></span></div><aside id="sidebar" class="vp-sidebar"><!--[--><!----><!--]--><ul class="vp-sidebar-links"></ul><!--[--><!----><!--]--></aside><!--[--><main id="main-content" class="vp-page"><!--[--><!----><!----><nav class="vp-breadcrumb disable"></nav><div class="vp-page-title"><h1><!---->多级存储</h1><div class="page-info"><!----><!----><span class="page-date-info" aria-label="写作日期"><svg xmlns="http://www.w3.org/2000/svg" class="icon calendar-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="calendar icon"><path d="M716.4 110.137c0-18.753-14.72-33.473-33.472-33.473-18.753 0-33.473 14.72-33.473 33.473v33.473h66.993v-33.473zm-334.87 0c0-18.753-14.72-33.473-33.473-33.473s-33.52 14.72-33.52 33.473v33.473h66.993v-33.473zm468.81 33.52H716.4v100.465c0 18.753-14.72 33.473-33.472 33.473a33.145 33.145 0 01-33.473-33.473V143.657H381.53v100.465c0 18.753-14.72 33.473-33.473 33.473a33.145 33.145 0 01-33.473-33.473V143.657H180.6A134.314 134.314 0 0046.66 277.595v535.756A134.314 134.314 0 00180.6 947.289h669.74a134.36 134.36 0 00133.94-133.938V277.595a134.314 134.314 0 00-133.94-133.938zm33.473 267.877H147.126a33.145 33.145 0 01-33.473-33.473c0-18.752 14.72-33.473 33.473-33.473h736.687c18.752 0 33.472 14.72 33.472 33.473a33.145 33.145 0 01-33.472 33.473z"></path></svg><span><!----></span><meta property="datePublished" content="2023-10-25T10:37:38.000Z"></span><!----><span class="page-reading-time-info" aria-label="阅读时间"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon"><path d="M799.387 122.15c4.402-2.978 7.38-7.897 7.38-13.463v-1.165c0-8.933-7.38-16.312-16.312-16.312H256.33c-8.933 0-16.311 7.38-16.311 16.312v1.165c0 5.825 2.977 10.874 7.637 13.592 4.143 194.44 97.22 354.963 220.201 392.763-122.204 37.542-214.893 196.511-220.2 389.397-4.661 5.049-7.638 11.651-7.638 19.03v5.825h566.49v-5.825c0-7.379-2.849-13.981-7.509-18.9-5.049-193.016-97.867-351.985-220.2-389.527 123.24-37.67 216.446-198.453 220.588-392.892zM531.16 450.445v352.632c117.674 1.553 211.787 40.778 211.787 88.676H304.097c0-48.286 95.149-87.382 213.728-88.676V450.445c-93.077-3.107-167.901-81.297-167.901-177.093 0-8.803 6.99-15.793 15.793-15.793 8.803 0 15.794 6.99 15.794 15.793 0 80.261 63.69 145.635 142.01 145.635s142.011-65.374 142.011-145.635c0-8.803 6.99-15.793 15.794-15.793s15.793 6.99 15.793 15.793c0 95.019-73.789 172.82-165.96 177.093z"></path></svg><span>大约 4 分钟</span><meta property="timeRequired" content="PT4M"></span><!----><!----></div><hr></div><div class="toc-place-holder"><aside id="toc"><!--[--><!----><!--]--><div class="toc-header">此页内容<button type="button" class="print-button" title="打印"><svg xmlns="http://www.w3.org/2000/svg" class="icon print-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="print icon"><path d="M819.2 364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button></div><div class="toc-wrapper"><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#概述">概述</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#参数定义">参数定义</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#本地多级存储配置示例">本地多级存储配置示例</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#远端多级存储配置示例">远端多级存储配置示例</a></li><!----><!--]--></ul><div class="toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!----><div class="theme-hope-content"><!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
--><h1 id="多级存储" tabindex="-1"><a class="header-anchor" href="#多级存储" aria-hidden="true">#</a> 多级存储</h1><h2 id="概述" tabindex="-1"><a class="header-anchor" href="#概述" aria-hidden="true">#</a> 概述</h2><p>多级存储功能向用户提供多种存储介质管理的能力，用户可以使用多级存储功能为 IoTDB 配置不同类型的存储介质，并为存储介质进行分级。具体的，在 IoTDB 中，多级存储的配置体现为多目录的管理。用户可以将多个存储目录归为同一类，作为一个“层级”向 IoTDB 中配置，这种“层级”我们称之为 storage tier；同时，用户可以根据数据的冷热进行分类，并将不同类别的数据存储到指定的“层级”中。当前 IoTDB 支持通过数据的 TTL 进行冷热数据的分类，当一个层级中的数据不满足当前层级定义的 TTL 规则时，该数据会被自动迁移至下一层级中。</p><h2 id="参数定义" tabindex="-1"><a class="header-anchor" href="#参数定义" aria-hidden="true">#</a> 参数定义</h2><p>在 IoTDB 中开启多级存储，需要进行以下几个方面的配置：</p><ol><li>配置数据目录，并将数据目录分为不同的层级</li><li>配置每个层级所管理的数据的 TTL，以区分不同层级管理的冷热数据类别。</li><li>配置每个层级的最小剩余存储空间比例，当该层级的存储空间触发该阈值时，该层级的数据会被自动迁移至下一层级（可选）。</li></ol><p>具体的参数定义及其描述如下。</p><table><thead><tr><th>配置项</th><th>默认值</th><th>说明</th><th>约束</th></tr></thead><tbody><tr><td>dn_data_dirs</td><td>无</td><td>用来指定不同的存储目录，并将存储目录进行层级划分</td><td>每级存储使用分号分隔，单级内使用逗号分隔；云端配置只能作为最后一级存储且第一级不能作为云端存储；最多配置一个云端对象；远端存储目录使用 OBJECT_STORAGE 来表示</td></tr><tr><td>default_ttl_in_ms</td><td>无</td><td>定义每个层级负责的数据范围，通过 TTL 表示</td><td>每级存储使用分号分隔；层级数量需与 dn_data_dirs 定义的层级数一致</td></tr><tr><td>dn_default_space_move_thresholds</td><td>0.15</td><td>定义每个层级数据目录的最小剩余空间比例；当剩余空间少于该比例时，数据会被自动迁移至下一个层级；当最后一个层级的剩余存储空间到低于此阈值时，会将系统置为 READ_ONLY</td><td>每级存储使用分号分隔；层级数量需与 dn_data_dirs 定义的层级数一致</td></tr><tr><td>object_storage_type</td><td>AWS_S3</td><td>云端存储类型</td><td>IoTDB 当前只支持 AWS S3 作为远端存储类型，此参数不支持修改</td></tr><tr><td>object_storage_bucket</td><td>无</td><td>云端存储 bucket 的名称</td><td>AWS S3 中的 bucket 定义；如果未使用远端存储，无需配置</td></tr><tr><td>object_storage_endpoiont</td><td></td><td>云端存储的 endpoint</td><td>AWS S3 的 endpoint；如果未使用远端存储，无需配置</td></tr><tr><td>object_storage_access_key</td><td></td><td>云端存储的验证信息 key</td><td>AWS S3 的 credential key；如果未使用远端存储，无需配置</td></tr><tr><td>object_storage_access_secret</td><td></td><td>云端存储的验证信息 secret</td><td>AWS S3 的 credential secret；如果未使用远端存储，无需配置</td></tr><tr><td>remote_tsfile_cache_dirs</td><td>data/datanode/data/cache</td><td>云端存储在本地的缓存目录</td><td>如果未使用远端存储，无需配置</td></tr><tr><td>remote_tsfile_cache_page_size_in_kb</td><td>20480</td><td>云端存储在本地缓存文件的块大小</td><td>如果未使用远端存储，无需配置</td></tr><tr><td>remote_tsfile_cache_max_disk_usage_in_mb</td><td>51200</td><td>云端存储本地缓存的最大磁盘占用大小</td><td>如果未使用远端存储，无需配置</td></tr></tbody></table><h2 id="本地多级存储配置示例" tabindex="-1"><a class="header-anchor" href="#本地多级存储配置示例" aria-hidden="true">#</a> 本地多级存储配置示例</h2><p>以下以本地两级存储的配置示例。</p><div class="language-JavaScript line-numbers-mode" data-ext="JavaScript"><pre class="language-JavaScript"><code>// 必须配置项
dn_data_dirs=/data1/data;/data2/data,/data3/data;
default_ttl_in_ms=86400000;-1
dn_default_space_move_thresholds=0.2;0.1
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>在该示例中，共配置了两个层级的存储，具体为：</p><table><thead><tr><th><strong>层级</strong></th><th><strong>数据目录</strong></th><th><strong>数据范围</strong></th><th><strong>磁盘最小剩余空间阈值</strong></th></tr></thead><tbody><tr><td>层级一</td><td>目录一：/data1/data</td><td>最近 1 天的数据</td><td>20%</td></tr><tr><td>层级二</td><td>目录一：/data2/data目录二：/data3/data</td><td>1 天以前的数据</td><td>10%</td></tr></tbody></table><h2 id="远端多级存储配置示例" tabindex="-1"><a class="header-anchor" href="#远端多级存储配置示例" aria-hidden="true">#</a> 远端多级存储配置示例</h2><p>以下以三级存储为例：</p><div class="language-JavaScript line-numbers-mode" data-ext="JavaScript"><pre class="language-JavaScript"><code>// 必须配置项
dn_data_dirs=/data1/data;/data2/data,/data3/data;OBJECT_STORAGE
default_ttl_in_ms=86400000;864000000;-1
dn_default_space_move_thresholds=0.2;0.15;0.1
object_storage_name=AWS_S3
object_storage_bucket=iotdb
object_storage_endpoiont=&lt;your_endpoint&gt;
object_storage_access_key=&lt;your_access_key&gt;
object_storage_access_secret=&lt;your_access_secret&gt;
// 可选配置项
remote_tsfile_cache_dirs=data/datanode/data/cache
remote_tsfile_cache_page_size_in_kb=20971520
remote_tsfile_cache_max_disk_usage_in_mb=53687091200
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>在该示例中，共配置了三个层级的存储，具体为：</p><table><thead><tr><th><strong>层级</strong></th><th><strong>数据目录</strong></th><th><strong>数据范围</strong></th><th><strong>磁盘最小剩余空间阈值</strong></th></tr></thead><tbody><tr><td>层级一</td><td>目录一：/data1/data</td><td>最近 1 天的数据</td><td>20%</td></tr><tr><td>层级二</td><td>目录一：/data2/data目录二：/data3/data</td><td>过去1 天至过去 10 天内的数据</td><td>15%</td></tr><tr><td>层级三</td><td>远端 AWS S3 存储</td><td>过去 10 天以前的数据</td><td>10%</td></tr></tbody></table></div><!----><footer class="page-meta"><div class="meta-item edit-link"><a href="https://github.com/apache/iotdb-docs/edit/main/src/zh/UserGuide/Master/User-Manual/Tiered-Storage_timecho.md" rel="noopener noreferrer" target="_blank" aria-label="发现错误？在 GitHub 上编辑此页" class="nav-link label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->发现错误？在 GitHub 上编辑此页<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="meta-item git-info"><div class="update-time"><span class="label">上次编辑于: </span><!----></div><div class="contributors"><span class="label">贡献者: </span><!--[--><!--[--><span class="contributor" title="email: 105700158+wanghui42@users.noreply.github.com">wanghui42</span><!--]--><!--]--></div></div></footer><!----><!----><!----><!--]--></main><!--]--><footer style="padding-bottom:2rem;"><span id="doc-version" style="display:none;">master</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2023 The Apache Software Foundation.<br> Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>Have a question?</strong> Connect with us on QQ, WeChat, or Slack. <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> now.</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"> We use <a href="https://analytics.google.com">Google Analytics</a> to collect anonymous, aggregated usage information. </p></footer></div><!--]--><!--]--><!----><!--]--></div>
<script type="module" src="/assets/app-5cdcb249.js" defer></script>
</body>
</html>