SNIA-SDC23-Wasserman-Bader-Breaking-Boundaries-Expanding-Cephs-Capabilities-with-NVMe-oF.pdf

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1、1|2023 SNIA.All Rights Reserved.Virtual ConferenceSeptember 28-29,2021Breaking Boundaries:Expanding Cephs Capabilities with NVMe-oFOrit WassermanDistinguished EngineerODF Lead ArchitectCeph NVMe-of ArchitectIBMKyle BaderSTSMPrincipal Portfolio Architect-Ceph offerings IBM2The buzzwords“Software defi

2、ned storage”“Unified storage system”“Scalable distributed storage”“The future of storage”“The Linux of storage”What Is Ceph?The substanceCeph is open source softwaresoftwareRuns on commodity hardwareCommodity serversIP networksHDDs,SSDs,NVMe,NV-DIMMs,.A single cluster can serve objectobject,blockblo

3、ck,and filefile workloads3Freedom to use(free as in beer)Freedom to introspect,modify,and share(free as in speech)Freedom from vendor lock-inFreedom to innovateCeph is Free and Open Source4Reliable storage Reliable storage service out of unreliable componentsunreliable componentsNo single point of f

4、ailureData durability via replication or erasure codingNo interruption of service from rolling upgrades,online expansion,etc.Favor consistency and correctness over performanceCep is Reliable5Ceph is elastic storage infrastructureStorage cluster may grow or shrinkAdd or remove hardware while system i

5、s online and under loadScale upup with bigger,faster hardwareScale outout within a single cluster for capacity and performanceFederateFederate multiple clusters across sites with asynchronous replication and disaster recovery capabilitiesCeph is Scalable6Ceph is a Unified Storage SystemRGWS3 and Swi

6、ftobject storageLIBRADOSLow-level storage APIRADOSReliable,elastic,distributed storage layer withreplication and erasure codingRBDVirtual block deviceCEPHFSDistributed networkfile systemOBJECTBLOCKFILE7RADOSRADOS8RADOSR Reliable A Autonomic D Distributed O Object S StorageCommon storage layer underp