2012/5/20 Stefan Priebe <s.priebe@xxxxxxxxxxxx>: > Am 20.05.2012 10:19, schrieb Christian Brunner: > >> - Cheap Object Storage (S3): >> >> Many 3,5'' SATA Drives for the storage (probably in a RAID config) >> A small and cheap SSD for the journal >> >> - Basic Block Storage (RBD): >> >> Many 2,5'' SATA Drives for the storage (RAID10 and/or mutliple OSDs) >> Small MaxIOPS SSDs for each OSD journal >> >> - High performance Block Storage (RBD) >> >> Many large SATA SSDs for the storage (prbably in a RAID5 config) >> stec zeusram ssd drive for the journal > > That's exactly what i thought too but then you need a seperate ceph / rbd > cluster for each type. > > Which will result in a minimum of: > 3x mon servers per type > 4x osd servers per type > --- > > so you'll need a minimum of 12x osd systems and 9x mon systems. You can arrange the storage types in different pools, so that you don't need separate mon servers (this can be done by adjusting the crushmap) and you could even run multiple OSDs per server. Christian -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
