Re: [ceph-users] Hybrid pool speed (SSD + SATA HDD)

2018-03-14 Thread Jonathan D. Proulx
On Wed, Mar 14, 2018 at 09:50:12PM +0100, mart.v wrote: : But from what I understood so far, during the writing process the : client communicates also only with the primary OSDs but it will wait : until all data are written on all replicas. This is my main concern. : Does this mean that wr

[ceph-users] Hybrid pool speed (SSD + SATA HDD)

2018-03-14 Thread mart.v
Hello everyone, I have been thinking about buildingĀ  a hybrid storage pool (inspiration from this article: http://www.root314.com/ceph/2017/04/30/Ceph-hybrid-storage- tiers/). So instead of 3 replicas on SSD I plan to use 2 SSD and the third one will be plain old SATA HDD. I can easily arran