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Text of the page (random words):
eos open storage about tech resources workshop service news support git community cern storage technology used at the large hadron collider lhc e os o pen s torage workshop 25 latest v5 3 9 install about eos eos provides a service for storing large amounts of physics data and user files with a focus on interactive and batch analysis flexible eos is a storage solution for central data recording analysis and processing adaptable and scalable eos supports thousands of clients with random remote i o patterns with multi protocol support webdav cifs fuse xrootd grpc over 930 pb at cern designed for high capacity and low latency security eos offers a variety of authentication methods krb5 x509 oidc shared secret and jwt and proprietary token authorisation sync share eos provides sync share functionality for the cernbox front end services tape storage eos includes tape storage in combination with the cta cern tape archive software technology service architecture eos splits into client and server side components clients the eos client provides a command line interface and a mounted filesystem interface server the eos server is divided into meta data and data storage components and persistency back ends eos is based on various open source components the native protocol and framework used for implementation is xrootd meta data is persisted in rocksdb databases using a proprietary kv store called quarkdb data is stored natively in xfs filesystems on hard disks or ssds or on virtualised back end storage e g rados block devices or distributed filesystems like lustre or cephfs namespace management server mgm eos provides a hierarchical namespace the almost stateless mgm namespace server operates as an active passive pair in high availabity setups meta data entries for files and directories are cached in the active service component eos provides a very flexible access control quota and access limit system to control the sharing of storage resources within a large user community persistency quarkdb meta data is persisted in quarkdb a high available kv store backend quarkdb uses the raft protocol to guarantee persistency in replicated rocksdb databases without downtime an ideal setup for quarkdb consists of three linux server with sufficient ssd space storage server fst the data storage server fst provides a plug in infrastructure for file layouts and storage protocols the main layouts are replication and erasure encoding of files while replicated file layouts are ideal for random access erasure enoded files provide cost effective storage and high data durability for file integrity the eos fst provides optional file and block checksums the natively supported access protocols of the fst server are xrootd and http s based protocols clients cli fuse eos distributes a command line interface for administrative and user commands to interact with the eos namespace eos can be used using a fuse implementation as a mounted file system on linux and mac osx based platforms windows access can be provided using samba gateways github gitlab community jira tracker ci gitlab rpms resources documentation find the documentation to setup configure and run eos presentations a collection of presentations about eos from various conferences publications a collection of published articles about eos next workshop link to register for the next eos workshop cern it status board planned intervations and incidents release notes release notes of current and previous eos versions workshops 2024 cern it find recordings of presentations and slides go there 2023 cern it find recordings of presentations and slides go there 2022 virtual event find recordings of presentations and slides go there 2021 virtual event find recordings of presentations and slides go there 2021 cern it find recordings of presentations and slides go there 2020 cern it find recordings of presentations and slides go there 2019 cern it find recordings of presentations and slides go there 2018 cern it find recordings of presentations and slides go there services control tower cernbox service swan service cta service eos at cern in numbers 930pb storage volume 70k hard disks 8000m files 30k clients our collaborations australia s academic research network group of technology companies joint resource centre open source storage framework latest news 9th eos workshop at cern this two event is organized to provide a platform for exchange between developers users and sites running eos the workshop will cover a wide range of topics related to eos development operations deployments applications collaborations and various use cases on march 24 26 2025 read more cern passes an exabyte of disk storage end of 2023 cern s disk storage capacity has reached 1 exabyte most of the capacity is managed by eos services on sep 29 2023 read more eos core development team dr andreas joachim peters core developer cern staff elvin alin sindrilaru core developer cern staff guilherme amadio core developer cern staff abhishek lekshmanan core developer cern staff cedric caffy core developer cta cern staff past and current code contributors abhishek lekshmanan adrian mönnich andrea manzi core branko blagojević aritz brosa cedric caffy cristian contescu crystal chua dan van der ster david jericho dennis waldron enrico bocchi eric cano geoffray adde core giorgio bitzes core gerard bernabeu hervé rousseau hugo gonzalez labrador ilja neumann ivan arizanovic jan iven joaquim rocha core jozsef makai core julien leduc justin salmon jörn friedrich dreyer konstantinos tsitsimpikos lukasz janyst core michael alexander d silva michael davis michael lettrich michal kamil simon mihai patrascoiu core paul lensing paul musset stefan isidorovic intellectual or other contributors alberto pace andrew hanushevsky bernd panzer brian bockelmann dirk duellmann fabrizio furano german cancio gregor molan jakub moscicki jaroslav guenther latchezar betev luca mascetti maria arsuaga rios massimo lamanna roberto valverde xavier espinal get in contact eos support cern ch address cern it st esplanade des particules 1 1211 geneva switzerland join the eos community siign up for eos announcements thanks for subscribing to eos announcements subscribe home cern 2021