Hi Jerker, Thanks for the reply.
The link you posted describes only object storage. I need information of raid levels implementation for block devices. Thanks Kumar -----Original Message----- From: Jerker Nyberg [mailto:jer...@update.uu.se] Sent: Friday, May 16, 2014 2:43 PM To: Gnan Kumar, Yalla Cc: ceph-users@lists.ceph.com Subject: Re: [ceph-users] raid levels (Information needed) I would say the levels of redundancy could roughly be translated like this. RAID0 one replica (size=1) RAID1 two replicas (size=2) RAID10 two replicas (size=2) RAID5 erasure coding (erasure-code-m=1) RAID6 erasure coding (erasure-code-m=2) RAIDZ3 erasure coding (erasure-code-m=3) Read more here: http://ceph.com/docs/master/rados/operations/pools/ A seven disk RAID6 (4 data, 2 parity and 1 hot spare) would then be similar to a Ceph erasure coded pool on seven OSDs with erasure-code-k=4 and erasure-code-m=2. Kind regards, Jerker Nyberg. On Fri, 16 May 2014, yalla.gnan.ku...@accenture.com wrote: > Hi All, > > What are the kinds of raid levels of storage provided by Ceph block devices ? > > 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 ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
