create ceph pool

I'm playing with a cluster composed by 3 machines with 3 hdd osd per machine (9 osd in total). It is a test environment to learn doing stuff, but I don't want to destroy it with this "expansion". I have a VM with an application that is not tolerating HDD slow performance, and since I have 3 ssd...

Hello! I am trying to create a ceph pool through GUI with size 3, min 2, pg_num 2048 according to the pg calc i get the following error: TASK ERROR: mon_command failed - For better initial performance on pools expected to store a large number of objects, consider supplying the...