hardware-and-software-requirements: Add note about supported filesystems (#21379) (#21391)

Author: ti-chi-bot

.lycheeignore

@@ -33,3 +33,4 @@ https://dash\.cloudflare\.com/.*
 https://centminmod\.com/mydumper\.html
 https://docs\.pingcap\.com/tidb/v6\.6/system-variables#tidb_pessimistic_txn_aggressive_locking-new-in-v660
 https://docs\.pingcap\.com/tidb/v7\.6/system-variables#tidb_ddl_version-new-in-v760
+https://developers\.redhat\.com/blog/2021/01/05/building-red-hat-enterprise-linux-9-for-the-x86-64-v2-microarchitecture-level

hardware-and-software-requirements.md

@@ -171,7 +171,7 @@ You can deploy and run TiDB on the 64-bit generic hardware server platform in th
 
 | Component | CPU     | Memory | Local Storage  | Network  | Number of Instances (Minimum Requirement) |
 | :------: | :-----: | :-----: | :----------: | :------: | :----------------: |
-| TiDB    | 8 core+   | 16 GB+  | [Disk space requirements](#disk-space-requirements) | Gigabit network card | 1 (can be deployed on the same machine with PD)      |
+| TiDB    | 8 core+   | 16 GB+  | [Storage requirements](#storage-requirements) | 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     |
@@ -248,7 +248,7 @@ As an open-source distributed SQL database, TiDB requires the following network
 | Alertmanager | 9093 | the port for the alert web service |
 | Alertmanager | 9094 | the alert communication port |
 
-## Disk space requirements
+## Storage requirements
 
 <table>
 <thead>
@@ -292,6 +292,8 @@ As an open-source distributed SQL database, TiDB requires the following network
 </tbody>
 </table>
 
+TiDB supports the XFS and Ext4 file systems. Other file systems are not recommended for production environments.  
+
 ## Web browser requirements
 
 TiDB relies on [Grafana](https://grafana.com/) to provide visualization of database metrics. A recent version of Microsoft Edge, Safari, Chrome or Firefox with Javascript enabled is sufficient.