Copy-on-write snapshots and cross-cluster replication built into the storage layer, not bolted on.
Backup tools built for VMs produce incomplete Kubernetes restores. simplyblock's backup capability is part of the storage layer itself: instant CoW snapshots, policy-based scheduling, CSI VolumeSnapshot compatibility, and Velero integration. Your backup workflow uses the same Kubernetes APIs you already operate.
The Problem
Backup tools that don't understand the Kubernetes object model leave stateful applications unrecoverable, at a cost that grows with every snapshot.
Backup tools that don't understand the Kubernetes object model restore volume data but miss configs, secrets, and namespaces, leaving the application non-functional.
Full-copy snapshot strategies duplicate large volumes repeatedly. At scale, snapshot storage costs match or exceed primary storage costs.
Re-copying terabytes from slow backup tiers to restore a database extends RTO far past acceptable thresholds for production workloads.
Every added backup agent is a new failure domain, upgrade dependency, and operational surface on top of the storage system you are already running.
The Solution
Storage-layer backup built into the CSI driver. No separate agents, no application changes, no backup windows.
simplyblock snapshots are copy-on-write at the storage layer. When you snapshot a volume, only the blocks that subsequently change are written again. The snapshot itself takes under a minute regardless of volume size and introduces no I/O pause to the running workload. You can snapshot while PostgreSQL is writing, Kafka is ingesting, or any other stateful workload is active.
Snapshots are exposed as standard Kubernetes VolumeSnapshot objects via the CSI driver, so backup orchestration tools like Velero work without modification. For teams running Velero today, simplyblock becomes the snapshot provider that makes existing backup workflows faster and cheaper.
For cross-cluster protection, simplyblock replicates volumes to secondary clusters at the storage level rather than via application-layer streaming. Cold snapshots tier automatically to object storage, reducing long-term backup costs without manual archival workflows.
Capabilities
Everything your platform team needs for Kubernetes-native data protection.
Snapshots complete in under one minute regardless of volume size. No quiesce, no I/O pause, no application coordination required.
Full compliance with the Kubernetes CSI snapshot API. Works with Velero, Kasten K10, and any backup orchestrator that speaks standard Kubernetes.
Set retention policies and snapshot intervals per StorageClass. Automated lifecycle management keeps backup chains current without manual intervention.
Replicate volumes to a secondary cluster for off-site protection. Replication is asynchronous and storage-level, not application-level streaming.
Cold snapshots tier automatically to object storage (S3-compatible), reducing long-term backup costs without manual archival workflows.
CoW snapshots share unchanged blocks with the parent volume. Backup storage consumption grows only with actual changes, not volume size.
Yes. simplyblock's CSI driver implements the Kubernetes VolumeSnapshot API, which is what Velero uses for CSI-based backup. No custom Velero plugin is required. You configure Velero to use the simplyblock storage class as its snapshot provider.
Snapshot creation is under one minute for any volume size, because simplyblock snapshots are copy-on-write at the block level. They don't copy data at creation time. Only blocks that change after the snapshot point are written separately.
Snapshots alone cover backup and local recovery. For disaster recovery across clusters or availability zones, simplyblock also supports asynchronous volume replication. See the Disaster Recovery use case page for details on cross-cluster protection.
CoW snapshots share unchanged blocks with the source volume, so storage growth reflects only the changed data, not the full volume size per snapshot. For large, mostly-stable volumes such as databases and media libraries, this can reduce backup storage consumption by 70-80% compared to full-copy approaches.
RPO depends on your snapshot frequency policy. Snapshot creation takes under one minute, so you can set snapshot intervals as short as 5-10 minutes for critical workloads. For near-zero RPO protection, combine snapshot backup with synchronous replication.
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