DRBD
DRBD® (Distributed Replicated Block Device) is an open source, software‑based, shared‑nothing block storage replication solution for Linux, designed primarily to deliver high-performance, high‑availability (HA) data services by mirroring local block devices between nodes in real time, either synchronously or asynchronously. Implemented deep in the Linux kernel as a virtual block‑device driver, DRBD ensures local read performance with efficient write‑through replication to peer(s). User‑space utilities like drbdadm, drbdsetup, and drbdmeta enable declarative configuration, metadata management, and administration across installations. Originally built for two‑node HA clusters, DRBD 9.x extends support to multi‑node replication and integration into software‑defined storage (SDS) systems such as LINSTOR, making it suitable for cloud‑native environments.
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Portworx
Run Kubernetes in production with the #1 Kubernetes platform for persistent storage, backup, DR, data security and capacity management. Easily protect, restore and migrate your Kubernetes applications in any cloud or data center. The Portworx Enterprise Storage Platform is your end-to-end storage and data management solution for all your Kubernetes projects, including container-based CaaS, DBaaS, SaaS, and Disaster Recovery initiatives. Your apps will benefit from container-granular storage, disaster recovery, data security, multi-cloud migrations and more. Easily solve the enterprise requirements needed to run data service on Kubernetes. Effortlessly offer a cloud-like DbaaS to your users without giving up control. Scale the backend data services powering your SaaS app without operational complexity. Add DR to any Kubernetes app with a single command. Easily backup and restore all your Kubernetes applications.
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simplyblock
Simplyblock provides a distributed storage solution for IO-intensive and latency-sensitive container workloads in the cloud, offering an alternative to Elastic Block Storage services. The storage solution enables thin provisioning, encryption, compression, storage virtualization, and more.
Ultra-high performance at low TCO, offering available for AWS, fully containerized, deployment. Up to 100x improved cost-to-performance over currently prevailing software-defined storage technologies like Ceph.
Start from single node, grow to 255 nodes in a single cluster. Scales safely with zero downtime. Performance scales linearly. Storage entities (logical volumes) are provisioned and attached on cluster-level, no manual configuration required.
Drop-in replacement for your current k8s storage solution. Offers easy integration via StorageClass. Write concurrently on multiple containers and nodes via distributed file system support.
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Longhorn
In the past, ITOps and DevOps have found it hard to add replicated storage to Kubernetes clusters. As a result many non-cloud-hosted Kubernetes clusters don’t support persistent storage. External storage arrays are non-portable and can be extremely expensive. Longhorn delivers simplified, easy to deploy and upgrade, 100% open source, cloud-native persistent block storage without the cost overhead of open core or proprietary alternatives. Longhorn’s built-in incremental snapshot and backup features keep the volume data safe in or out of the Kubernetes cluster. Scheduled backups of persistent storage volumes in Kubernetes clusters is simplified with Longhorn’s intuitive, free management UI. External replication solutions will recover from a disk failure by re-replicating the entire data store. This can take days, during which time the cluster performs poorly and has a higher risk of failure.
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