> This is worse than I feared, but very much in the realm of concerns I > had with using single-disk RAID0 setups.? Thank you very much for > posting your experience!? My money would still be on using *high write > endurance* NVMes for DB/WAL and whatever I could afford for block.?
yw. Of course there are all manner of use-cases and constraints, so others have different experiences. Perhaps with the freedom to not use a certain HBA vendor things would be somewhat better but in said past life the practice cost hundreds of thousands of dollars. I personally have a low tolerance for fuss, and management / mapping of WAL/DB devices still seems like a lot of fuss especially when drives fail or have to be replaced for other reasons. For RBD clusters/pools at least I really enjoy not having to mess with multiple devices; I’d rather run colo with SATA SSDs than spinners with NVMe WAL+DB. - aad _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
