comiiit

STORAGE.md

@@ -235,6 +235,41 @@ flowchart TD
     OUSE -->|"Kubernetes PVC"| OK["Ceph RBD / Longhorn / Linstor<br/>SDS na K8s<br/>CSI, replication, snapshots"]
 ```
 
+## OpenStack Storage
+
+OpenStack nabízí tři hlavní storage služby:
+
+| Služba | Typ | Popis |
+|--------|-----|-------|
+| **Cinder** | Block storage | Persistent volumes pro instance (iSCSI, NFS, Ceph RBD) |
+| **Swift** | Object storage | RESTful object store (S3-kompatibilní via middleware) |
+| **Manila** | File storage | Shared file systems (NFS, CIFS) jako managed service |
+
+### Cinder (Block Storage)
+
+- Podpora multi-backend: LVM, Ceph RBD, NFS, iSCSI, Fibre Channel
+- Snapshoting, cloning, encryption at rest
+- Cinder scheduler pro distribuci volume napříč backendy
+- QoS specs pro omezení IOPS/bandwidth
+
+### Swift (Object Storage)
+
+- Alternativa k S3 pro on-prem object storage
+- Ring-based data distribution (consistent hashing)
+- Multi-region replikace (syncopy)
+- Stateless REST API (RESTful, no single point of failure)
+
+### Manila (Shared File Systems)
+
+- Managed NFS/CIFS pro sdílení mezi instancemi
+- Backendy: NetApp, Dell EMC, CephFS, GlusterFS
+- Access rules (IP-based, cert-based, user-based)
+- Use case: HPC cluster home directories, NAS pro legacy apps
+
+### Kontejnerový storage (OpenStack + Ceph)
+
+Ceph je nejčastější storage backend pro OpenStack: Cinder (RBD), Swift (RGW), Manila (CephFS), Glance (RBD images).
+
 ## Zdroje
 
 Odkazy, knihy a standardy: [sources/infrastructure/sources.md](sources/infrastructure/sources.md)