Hi Loic, Thanks for the reply.
Thanks Kumar -----Original Message----- From: Loic Dachary [mailto:[email protected]] Sent: Monday, May 19, 2014 6:04 PM To: Gnan Kumar, Yalla; [email protected] Subject: Re: [ceph-users] Erasure coding Hi, The general idea to preserve resilience but save space compared to replication. It costs more in terms of CPU and network. You will find a short introduction here : https://wiki.ceph.com/Planning/Blueprints/Dumpling/Erasure_encoding_as_a_storage_backend https://wiki.ceph.com/Planning/Blueprints/Firefly/Erasure_coded_storage_backend_%28step_3%29 For the next Ceph release Pyramid Codes will help reduce the bandwidth requirements https://wiki.ceph.com/Planning/Blueprints/Giant/Pyramid_Erasure_Code Cheers On 19/05/2014 13:52, [email protected] wrote: > Hi All, > > > > What exactly is erasure coding and why is it used in ceph ? I could not get > enough explanatory information from the documentation. > > > > > > Thanks > > Kumar > > > ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ > > This message is for the designated recipient only and may contain privileged, > proprietary, or otherwise confidential information. If you have received it > in error, please notify the sender immediately and delete the original. Any > other use of the e-mail by you is prohibited. Where allowed by local law, > electronic communications with Accenture and its affiliates, including e-mail > and instant messaging (including content), may be scanned by our systems for > the purposes of information security and assessment of internal compliance > with Accenture policy. > ______________________________________________________________________________________ > > www.accenture.com > > > _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Loïc Dachary, Artisan Logiciel Libre _______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
