Good morning, We are currently investigating using Ceph for a KVM farm, block storage and possibly file systems (cephfs with ceph-fuse, and ceph hadoop). Our cluster will be composed of 4 nodes, ~240 OSD's, and 4 monitors providing mon and mds as required. What experience has the community had with large numbers of files in a single directory (500,000 - 5 million). We know that directory fragmentation will be required but are concerned about the stability of the implementation. Your opinions and suggestions are welcome. Thank you Rhian Resnick Assistant Director Middleware and HPC Office of Information Technology Florida Atlantic University 777 Glades Road, CM22, Rm 173B Boca Raton, FL 33431 Phone 561.297.2647 Fax 561.297.0222 [image] <https://hpc.fau.edu/wp-content/uploads/2015/01/image.jpg> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20170221/01e0b899/attachment.htm>