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Correction prérequis nœuds Ceph : 3 minimum, 5 optimal

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Add reference to Ceph benchmark article showing scale-out benefits
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Tellsanguis 2025-11-22 23:59:27 +01:00
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i18n/en/docusaurus-plugin-content-blog/2025-11-22-stockage-distribue-proxmox.md
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@ -58,7 +58,7 @@ Ceph is the distributed storage solution most promoted by Proxmox. It's directly
**Disadvantages:**
- **High resource consumption**: significant CPU and RAM for MON, MGR, and OSD processes
- **Official recommendation of 5 nodes minimum** for optimal configuration (3 MON + OSD distribution)
- **3 nodes minimum, but [5 recommended](https://ceph.io/en/news/blog/2019/part-3-rhcs-bluestore-performance-scalability-3-vs-5-nodes/)** for optimal performance (near-linear scalability thanks to Ceph's scale-out architecture)
- **Requires 10 Gbps network** for acceptable performance
- High operational complexity despite Proxmox's simplification efforts
@ -107,7 +107,7 @@ Given my homelab's constraints, Linstor DRBD seemed to be the most suitable choi
| Criterion | Ceph | ZFS Replication | Linstor DRBD |
|-----------|------|-----------------|--------------|
| Minimum nodes | 5 (optimal) | 2 | 3 (2 + witness) |
| Minimum nodes | 3 ([5 optimal](https://ceph.io/en/news/blog/2019/part-3-rhcs-bluestore-performance-scalability-3-vs-5-nodes/)) | 2 | 3 (2 + witness) |
| Recommended network | 10 Gbps | 1 Gbps | 1 Gbps (optimal 10 Gbps) |
| Replication type | Synchronous | Asynchronous | Synchronous |
| Live migration | Yes | No | Yes |