To learn the TiDB architecture, see TiDB Architecture.
The following table lists the recommended hardware for each components.
| Component | # of CPU Cores | Memory | Disk Type | Disk | # of Instances |
| TiDB | 8+ | 16G+ | 2+ | ||
| PD | 8+ | 16G+ | 200G+ | 3+ | |
| TiKV | 8+ | 16G+ | SSD | 200G~500G | 3+ |
Deployment tips:
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Deploy only one TiKV instance on one disk.
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Don’t deploy the PD instance and TiKV instance on the same disk
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The TiDB instance can be deployed to the same disk with either PD or TiKV.
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The size of the disk for TiKV does not exceed 500G. This is to avoid a long data recovering time in case of disk failure.
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Use SSD for TiKV.