Instant snapshots, erasure coding, and volume replication for stateful Kubernetes workloads — without a dedicated backup appliance.
Kubernetes makes it easy to run stateful workloads. Protecting them is harder. Traditional snapshot tools are slow, replication is an afterthought, and triple-replication storage wastes hardware to achieve durability it struggles to prove. Simplyblock builds data protection into the storage layer: instant copy-on-write snapshots, configurable erasure coding, multi-zone volume replication, and S3-compatible snapshot offload — all exposed through the standard Kubernetes CSI interface.
The Protection Gap
Most Kubernetes storage platforms treat data protection as something the application layer or a separate backup product should handle. That creates gaps in RPO, RTO, and operational clarity.
Legacy storage snapshot implementations either require quiescing the application, produce crash-consistent images that databases can't use cleanly, or take long enough to create that backup windows become operational constraints.
When a storage node or zone fails, teams relying on manual runbooks and separate tooling for failover spend more time reacting than the workload's RTO allows. Storage-level automation is needed but rarely built in.
The common answer to data durability in distributed storage is 3x replication. It delivers durability, but at the cost of 3x raw storage overhead — hardware spend that delivers no performance and no additional resilience beyond what erasure coding can achieve at a fraction of the overhead.
Applications like databases often write to multiple volumes. Consistent snapshots across those volumes require storage-level coordination. Without it, application-consistent backup requires external orchestration and adds complexity to every backup window.
Built-In Storage Protection
Data protection built into the storage layer, exposed through the Kubernetes CSI interface, without requiring a separate backup appliance or manual failover runbook.
Simplyblock snapshots are copy-on-write and instant — there is no performance impact at snapshot time and no application quiesce required. Snapshots can be used as the foundation for backup workflows, clone operations for dev/test, or rapid rollback in deployment pipelines. See how this fits the broader fast backup and disaster recovery story.
Simplyblock uses configurable erasure coding (N+1, N+2, N+4) to protect data across nodes and drives. An N+2 configuration tolerates two simultaneous node failures while using significantly less raw storage than triple replication. Teams get stronger durability guarantees at lower hardware cost.
Simplyblock supports asynchronous volume replication across availability zones, enabling near-zero RPO for storage-level failover. Snapshots can also be offloaded to any S3-compatible object storage for long-term retention, archive, or cross-site recovery. See the full RPO/RTO reduction story.
What Teams Gain
Meet RPO and RTO SLAs for stateful Kubernetes workloads without adding a separate backup appliance or building manual failover runbooks.
Instant snapshots eliminate the time cost of traditional backup quiescing. Backup pipelines can take consistent storage snapshots in seconds rather than blocking on quiesce, copy, and resume cycles.
Storage-level asynchronous replication keeps a consistent replica of every protected volume in a second zone. Failover is a storage operation, not a manual data recovery project.
Erasure coding delivers the same fault tolerance as triple replication at a fraction of the raw storage overhead. Teams get stronger SLAs without paying for 3x hardware.
Instant snapshots make it practical to clone production volumes for development and testing environments without full copies — speeding up test cycle times and reducing storage waste.
Snapshots offloaded to S3-compatible storage extend retention beyond the primary cluster without adding dedicated backup hardware to the on-premises footprint.
Databases, message queues, VM disks, and any other workload using Kubernetes persistent volumes all benefit from the same snapshot, erasure coding, and replication infrastructure — no per-workload backup strategy required.
Simplyblock snapshots are copy-on-write and instant. Snapshot creation does not require quiescing the application and has no measurable impact on ongoing I/O. The snapshot is available immediately after the API call completes.
Simplyblock supports configurable erasure coding including N+1, N+2, and N+4 configurations. The appropriate configuration depends on the cluster size, fault tolerance requirements, and the trade-off between storage efficiency and resilience headroom. The simplyblock team can help select the right configuration for your environment.
Simplyblock supports asynchronous volume replication using the Kubernetes CSI volume replication interface. A replica of the protected volume is maintained in a secondary availability zone or site. On failover, the replica is promoted and made available to the workload, with RPO determined by the replication lag at the time of failure.
Yes. Simplyblock exposes snapshots through the standard Kubernetes CSI snapshot interface, which means it works with backup tools that use CSI snapshots as their data capture mechanism. S3 offload is available for tools that consume snapshot exports.
For most stateful Kubernetes workloads, yes. Simplyblock's built-in copy-on-write snapshots, S3 offload for long-term retention, and asynchronous volume replication across zones cover the core capabilities that teams typically deploy a separate backup appliance to provide. Teams evaluating backup appliance replacement should verify that their specific RPO and retention requirements are met by the snapshot schedule and replication configuration they choose.
Ask your AI assistant to evaluate simplyblock's data protection capabilities — snapshots, erasure coding, and volume replication — against the RPO and RTO requirements for stateful Kubernetes workloads.