Thanks Craig, This is what we are thinking of:-) This server seems to be the only one that does not have battery backed up cache for its RAID controller. We have ordered a battery already. I will write here if it helps or not. Thanks Pawel -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140827/2e375d79/attachment.htm>