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add disk compute formula (#917)
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‎src/.vuepress/sidebar/V2.0.x/zh-Table.ts‎

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@@ -54,7 +54,7 @@ export const zhSidebar = {
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children: [
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{ text: '部署形态', link: 'Deployment-form_apache' },
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{ text: '安装包获取', link: 'IoTDB-Package_apache' },
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{ text: '资源规划', link: 'Database-Resources' },
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{ text: '资源规划', link: 'Database-Resources_apache' },
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{ text: '环境配置', link: 'Environment-Requirements' },
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{ text: '单机版部署指导', link: 'Stand-Alone-Deployment_apache' },
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{ text: '集群版部署指导', link: 'Cluster-Deployment_apache' },

‎src/.vuepress/sidebar/V2.0.x/zh-Tree.ts‎

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@@ -54,7 +54,7 @@ export const zhSidebar = {
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children: [
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{ text: '部署形态', link: 'Deployment-form_apache' },
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{ text: '安装包获取', link: 'IoTDB-Package_apache' },
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{ text: '资源规划', link: 'Database-Resources' },
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{ text: '资源规划', link: 'Database-Resources_apache' },
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{ text: '环境配置', link: 'Environment-Requirements' },
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{ text: '单机版部署指导', link: 'Stand-Alone-Deployment_apache' },
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{ text: '集群版部署指导', link: 'Cluster-Deployment_apache' },

‎src/.vuepress/sidebar_timecho/V2.0.x/zh-Table.ts‎

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@@ -54,7 +54,7 @@ export const zhSidebar = {
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children: [
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{ text: '部署形态', link: 'Deployment-form_timecho' },
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{ text: '安装包获取', link: 'IoTDB-Package_timecho' },
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{ text: '资源规划', link: 'Database-Resources' },
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{ text: '资源规划', link: 'Database-Resources_timecho' },
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{ text: '环境配置', link: 'Environment-Requirements' },
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{ text: '单机版部署指导', link: 'Stand-Alone-Deployment_timecho' },
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{ text: '集群版部署指导', link: 'Cluster-Deployment_timecho' },

‎src/.vuepress/sidebar_timecho/V2.0.x/zh-Tree.ts‎

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@@ -54,7 +54,7 @@ export const zhSidebar = {
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children: [
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{ text: '部署形态', link: 'Deployment-form_timecho' },
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{ text: '安装包获取', link: 'IoTDB-Package_timecho' },
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{ text: '资源规划', link: 'Database-Resources' },
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{ text: '资源规划', link: 'Database-Resources_timecho' },
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{ text: '环境配置', link: 'Environment-Requirements' },
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{ text: '单机版部署指导', link: 'Stand-Alone-Deployment_timecho' },
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{ text: '集群版部署指导', link: 'Cluster-Deployment_timecho' },

‎src/zh/UserGuide/Master/Table/Deployment-and-Maintenance/Database-Resources.md‎

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---
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redirectTo: Database-Resources_apache.html
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---
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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under the License.
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-->
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# 资源规划
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## 1. CPU
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<table style="text-align: center;">
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<tbody>
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<tr>
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<th rowspan="2">序列数（采集频率<=1HZ）</th>
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<th rowspan="2">CPU</th>
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<th colspan="3">节点数</th>
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</tr>
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<tr>
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<th>单机</th>
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<th>双活</th>
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<th>分布式</th>
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</tr>
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<tr>
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<td>10W以内</td>
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<td>2核-4核</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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</tr>
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<tr>
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<td>30W以内</td>
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<td>4核-8核</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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</tr>
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<tr>
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<td>50W以内</td>
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<td>8核-16核</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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</tr>
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<tr>
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<td>100W以内</td>
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<td>16核-32核</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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</tr>
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<tr>
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<td>200w以内</td>
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<td>32核-48核</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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</tr>
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<tr>
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<td>1000w以内</td>
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<td>48核</td>
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<td>1</td>
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<td>2</td>
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<td>请联系天谋商务咨询</td>
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</tr>
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<tr>
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<td>1000w以上</td>
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<td colspan="4">请联系天谋商务咨询</td>
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</tr>
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</tbody>
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</table>
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> CPU支持型号：鲲鹏、飞腾、申威、海光、兆芯、龙芯
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## 2. 内存
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<table style="text-align: center;">
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<tbody>
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<tr>
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<th rowspan="2">序列数（采集频率<=1HZ）</th>
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<th rowspan="2">内存</th>
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<th colspan="3">节点数</th>
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</tr>
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<tr>
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<th>单机</th>
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<th>双活</th>
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<th>分布式</th>
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</tr>
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<tr>
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<td>10W以内</td>
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<td>2G-4G</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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</tr>
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<tr>
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<td>30W以内</td>
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<td>6G-12G</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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</tr>
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<tr>
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<td>50W以内</td>
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<td>12G-24G</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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</tr>
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<tr>
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<td>100W以内</td>
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<td>24G-48G</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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</tr>
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<tr>
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<td>200w以内</td>
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<td>48G-96G</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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</tr>
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<tr>
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<td>1000w以内</td>
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<td>128G</td>
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<td>1</td>
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<td>2</td>
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<td>请联系天谋商务咨询</td>
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</tr>
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<tr>
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<td>1000w以上</td>
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<td colspan="4">请联系天谋商务咨询</td>
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</tr>
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</tbody>
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</table>
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> 提供灵活的内存配置选项，用户可在datanode-env文件中进行调整，详细信息和配置指南请参见 [datanode-env](../Reference/System-Config-Manual.md#_2-2-datanode-env-sh-bat)
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## 3. 存储(磁盘)
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### 3.1 存储空间
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计算公式：测点数量 * 采样频率（Hz）* 每个数据点大小（Byte，不同数据类型不一样，见下表）
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<table style="text-align: center;">
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<tbody>
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<tr>
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<th colspan="4"> 数据点大小计算表 </th>
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</tr>
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<tr>
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<td> 数据类型 </td>
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<td>时间戳（字节）</td>
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<td>值（字节）</td>
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<td>数据点总大小（字节）</td>
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</tr>
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<tr>
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<td>开关量（Boolean）</td>
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<td>8</td>
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<td>1</td>
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<td>9</td>
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</tr>
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<tr>
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<td>整型（INT32）/ 单精度浮点数（FLOAT）</td>
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<td>8</td>
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<td>4</td>
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<td>12</td>
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</tr>
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<tr>
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<td>长整型（INT64）/ 双精度浮点数（DOUBLE）</td>
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<td>8</td>
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<td>8</td>
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<td>16</td>
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</tr>
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<tr>
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<td>字符串（TEXT）</td>
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<td>8</td>
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<td>平均为a</td>
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<td>8+a</td>
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</tr>
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</tbody>
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</table>
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示例：1000设备，每个设备100 测点，共 100000 序列，INT32 类型。采样频率1Hz（每秒一次），存储1年，3副本。
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- 完整计算公式：1000设备 * 100测点 * 12字节每数据点 * 86400秒每天 * 365天每年 * 3副本/10压缩比 / 1024 / 1024 / 1024 / 1024 =11T
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- 简版计算公式：1000 * 100 * 12 * 86400 * 365 * 3 / 10 / 1024 / 1024 / 1024 / 1024 = 11T
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### 3.2 存储配置
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1000w 点位以上或查询负载较大，推荐配置 SSD。
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## 4. 网络（网卡）
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在写入吞吐不超过1000万点/秒时，需配置千兆网卡；当写入吞吐超过 1000万点/秒时，需配置万兆网卡。
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| **写入吞吐（数据点/秒）** | **网卡速率** |
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| ------------------- | ------------- |
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| <1000万 | 1Gbps（千兆） |
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| >=1000万 | 10Gbps（万兆） |
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## 5. 其他说明
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IoTDB 具有集群秒级扩容能力，扩容节点数据可不迁移，因此您无需担心按现有数据情况估算的集群能力有限，未来您可在需要扩容时为集群加入新的节点。

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