Re: [ceph-users] Best practice about using multiple disks on one single OSD
Thank you JC. Best Regards, James Jiaming Pan On Friday, September 26, 2014 12:25 PM, Jean-Charles LOPEZ jc.lo...@inktank.com wrote: Hi James, the best practice is to set up 1 OSD daemon per physical disk drive. In your case, each OSD node would hence be 4 OSD daemons using one physical drive per daemon, and deploying a minimum of 3 servers so each object copy resides on a separate physical server. JC On Sep 25, 2014, at 20:42, James Pan dev...@yahoo.com wrote: Hi, I have several servers and each server has 4 disks. Now I am going to setup Ceph on these servers and use all the 4 disks but it seems one OSD instance can be configured with one backend storage. So there seems two options to me: 1. Make the 4 disks into a raid0 then setup OSD to use this raid0 but obviously this is not good because one disk failure will ruin the entire storage. 2. Build FS on each disk and start 4 OSD instances on the server. Both options are not good. So I am wondering what's the best practice of setting up multiple didks on one OSD for Ceph. Thanks! Best Regards, James Jiaming Pan ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
[ceph-users] Best practice about using multiple disks on one single OSD
Hi, I have several servers and each server has 4 disks. Now I am going to setup Ceph on these servers and use all the 4 disks but it seems one OSD instance can be configured with one backend storage. So there seems two options to me: 1. Make the 4 disks into a raid0 then setup OSD to use this raid0 but obviously this is not good because one disk failure will ruin the entire storage. 2. Build FS on each disk and start 4 OSD instances on the server. Both options are not good. So I am wondering what's the best practice of setting up multiple didks on one OSD for Ceph. Thanks! Best Regards, James Jiaming Pan ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] Best practice about using multiple disks on one single OSD
Hi James, the best practice is to set up 1 OSD daemon per physical disk drive. In your case, each OSD node would hence be 4 OSD daemons using one physical drive per daemon, and deploying a minimum of 3 servers so each object copy resides on a separate physical server. JC On Sep 25, 2014, at 20:42, James Pan dev...@yahoo.com wrote: Hi, I have several servers and each server has 4 disks. Now I am going to setup Ceph on these servers and use all the 4 disks but it seems one OSD instance can be configured with one backend storage. So there seems two options to me: 1. Make the 4 disks into a raid0 then setup OSD to use this raid0 but obviously this is not good because one disk failure will ruin the entire storage. 2. Build FS on each disk and start 4 OSD instances on the server. Both options are not good. So I am wondering what's the best practice of setting up multiple didks on one OSD for Ceph. Thanks! Best Regards, James Jiaming Pan ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
