Replicated Storage
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Replicated Storage OverviewReplicated Storage (a.k.a Replicated Engine) is a progressive sub-project of the CNCF (Cloud Native Computing Foundation) Open Source initiative OpenEBS. OpenEBS is a Container Native Storage (CNS) solution that extends Kubernetes by providing a declarative data plane, offering resilient and adaptable storage for stateful applications.
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Design GoalsThe fundamental design objectives driving Replicated Storage's development are as follows:
- High Availability and Durability: Replicated Storage aims to ensure the persistence of data with high levels of availability and durability, contributing to the reliability of applications in a Kubernetes environment.
- Simplified Deployment and Management: The project endeavors to achieve seamless deployment and effortless management, empowering autonomous Site Reliability Engineering (SRE), or development teams to handle the storage infrastructure efficiently.
- Low Overhead Abstraction: Replicated Storage is designed to be a lightweight abstraction, minimizing resource overhead while delivering optimal storage performance for workloads.
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NVMe-oF Semantics and PerformanceReplicated Storage is built on the foundation of Intel's cutting-edge Storage Performance Development Kit (SPDK). The project fully leverages the protocol and computational efficiency of Non-Volatile Memory Express over Fabrics (NVMe-oF) semantics. This approach harnesses the immense performance capabilities of the latest generation solid-state storage devices, delivering a storage abstraction that incurs performance overhead within single-digit percentages.
In contrast, traditional pre-CNS shared storage systems are known to introduce overhead, often exceeding 40% and occasionally reaching as high as 80% of the underlying device or cloud volume capabilities. Moreover, pre-CNS shared storage can scale unpredictably as various workloads compete for access to shared storage resources.
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Although Replicated Storage utilizes NVMe-oF, it does not impose any requirements for the use of NVMe devices or cloud volumes.
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Quickstart GuideRefer to the Quickstart Guide for more information.
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Source Code and ContributionsTo access the Replicated Storage source code or actively contribute to the project, visit the GitHub repository.
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Community Support via SlackJoin the vibrant OpenEBS community on Kubernetes Slack for assistance and discussions related to OpenEBS and Replicated Storage. If you have questions or seek further information, visit the#openebs channel. If you are not already part of the community, you can sign up on Kubernetes Slack for a collaborative experience.