Hi, i'm gonna have to setup a 4-nodes Ceph(Proxmox+Ceph in fact) cluster. -1 node is a little HP Microserver N54L with 1X opteron + 2SSD+ 3X 4TB SATA It'll be used as OSD+Mon server only. - 3 nodes are setup upon Dell 730+ 1xXeon 2603, 48 GB RAM, 1x 1TB SAS for OS , 4x 4TB SATA for OSD and 2x DCS3700 200GB intel SSD I can't change the hardware, especially the poor cpu... Everything will be connected through Intel X520+Netgear XS708E, as 10GBE storage network. This cluster will support VM (mostly KVM) upon the 3 R730 nodes. I'm already aware of the CPU pegging all the time...But can't change it for the moment. The VM will be Filesharing servers, poor usage services (DNS,DHCP,AD or OpenLDAP). One Proxy cache (Squid) will be used upon a 100Mb Optical fiber with 500+ clients. My question is : Is it recommended to setup the 2 SSDS as : One SSD as journal for 2 (up to 3in the future) OSDs Or One SSD as journal for the 4 (up to 6 in the future) OSDs and the remaining SSD as cache tiering for the previous SSD+4 OSDs pool ? SSD should be rock solid enough to support both bandwidth and living time before being destroyed by the low amount of data that will be written on it (Few hundreds of GB per day as rule of thumb..) Thanks Best regards. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |