FAQ: update deploy-and-maintain.md (#11369)

faq/deploy-and-maintain-faq.md

@@ -7,58 +7,15 @@ summary: Learn about the FAQs related to TiDB deployment.
 
 This document summarizes the FAQs related to TiDB deployment.
 
-## Operating system requirements
+## Software and hardware requirements
 
-### What are the required operating system versions?
+### What operating systems does TiDB support?
 
-| Linux OS        | Version      |
-| :-----------------------:| :----------: |
-| Red Hat Enterprise Linux | 7.3 or later 7.x releases |
-| CentOS                   | 7.3 or later 7.x releases |
-| Oracle Enterprise Linux  | 7.3 or later 7.x releases |
-| Amazon Linux             | 2 |
-| Ubuntu LTS               | 16.04 or later |
+For the TiDB-supported operating systems, see [Software and Hardware Recommendations](/hardware-and-software-requirements.md).
 
-### Why it is recommended to deploy the TiDB cluster on CentOS 7?
+### What is the recommended hardware configuration for a TiDB cluster in the development, test, or production environment?
 
-<!-- Localization note for TiDB:
-
-- English: use distributed SQL, and start to emphasize HTAP
-- Chinese: can keep "NewSQL" and emphasize one-stop real-time HTAP ("一栈式实时 HTAP")
-- Japanese: use NewSQL because it is well-recognized
-
--->
-
-As an open-source distributed SQL database with high performance, TiDB can be deployed in the Intel architecture server and major virtualization environments and runs well. TiDB supports most of the major hardware networks and Linux operating systems. For details, see [Official Deployment Requirements](/hardware-and-software-requirements.md) for deploying TiDB.
-
-A lot of TiDB tests have been carried out in CentOS 7.3, and many deployment best practices have been accumulated in CentOS 7.3. Therefore, it is recommended that you use the CentOS 7.3+ Linux operating system when deploying TiDB.
-
-## Server requirements
-
-You can deploy and run TiDB on the 64-bit generic hardware server platform in the Intel x86-64 architecture. The requirements and recommendations about server hardware configuration for development, testing and production environments are as follows:
-
-### Development and testing environments
-
-| Component | CPU | Memory | Local Storage  | Network  | Instance Number (Minimum Requirement) |
-| :------: | :-----: | :-----: | :----------: | :------: | :----------------: |
-| TiDB    | 8 core+   | 16 GB+  | SAS, 200 GB+ | Gigabit network card | 1 (can be deployed on the same machine with PD)      |
-| PD      | 4 core+   | 8 GB+  | SAS, 200 GB+ | Gigabit network card | 1 (can be deployed on the same machine with TiDB)       |
-| TiKV    | 8 core+   | 32 GB+  | SAS, 200 GB+ | Gigabit network card | 3  |
-| TiFlash | 32 core+  | 64 GB+  | SSD, 200 GB+ | Gigabit network card | 1     |
-| TiCDC | 8 core+ | 16 GB+ | SAS, 200 GB+ | Gigabit network card | 1 |
-|         |         |         |              | Total Server Number |  6  |
-
-### Production environment
-
-| Component | CPU | Memory | Hard Disk Type | Network | Instance Number (Minimum Requirement) |
-| :-----: | :------: | :------: | :------: | :------: | :-----: |
-|  TiDB  | 16 core+ | 48 GB+ | SAS | 10 Gigabit network card (2 preferred) | 2 |
-| PD | 8 core+ | 16 GB+ | SSD | 10 Gigabit network card (2 preferred) | 3 |
-| TiKV | 16 core+ | 64 GB+ | SSD | 10 Gigabit network card (2 preferred) | 3 |
-| TiFlash | 48 core+ | 128 GB+ | 1 or more SSDs | 10 Gigabit network card (2 preferred) | 2 |
-| TiCDC | 16 core+ | 64 GB+ | SSD | 10 Gigabit network card (2 preferred) | 2 |
-| Monitor | 8 core+ | 16 GB+ | SAS | Gigabit network card | 1 |
-|     |     |     |      |  Total Server Number   |    13   |
+You can deploy and run TiDB on the 64-bit generic hardware server platform in the Intel x86-64 architecture or on the hardware server platform in the ARM architecture. For the requirements and recommendations about server hardware configuration for development, test, and production environments, see [Software and Hardware Recommendations - Server recommendations](/hardware-and-software-requirements.md#server-recommendations).
 
 ### What's the purposes of 2 network cards of 10 gigabit?
 
@@ -158,4 +115,4 @@ The Direct mode wraps the Write request into the I/O command and sends this comm
 
 TiDB supports deployment on [Google GKE](https://docs.pingcap.com/tidb-in-kubernetes/stable/deploy-on-gcp-gke), [AWS EKS](https://docs.pingcap.com/tidb-in-kubernetes/stable/deploy-on-aws-eks), and [Alibaba Cloud ACK](https://docs.pingcap.com/tidb-in-kubernetes/stable/deploy-on-alibaba-cloud).
 
-In addition, TiDB is currently available on JD Cloud and UCloud, and has the first-level database entries on them.
+In addition, TiDB is currently available on JD Cloud and UCloud.