Den tors 1 maj 2025 kl 09:12 skrev gagan tiwari <gagan.tiw...@mathisys-india.com>: > > HI Janne, > Thanks for the explanation. > > So, using all 10X15 Disks on 7 OSD nodes. Number PG will be :- > > ( 10X7X100 ) / 6 = 1166.666 nearest power of 2 is 2028. > > So, I will need to set 2028 placement groups. With 2028 PG , three will be > 12,168 pieces to be spread out on 70 > OSDs, which will give me 173.82 per OSD. Will this be an optimal number ? > Or this should be rounded off to 174
You could still start with 1024, it will not hurt a lot to have 80 PGs per OSD and you can split again later (which one does after expanding clusters anyhow) but then again, with ssd/nvme, being closer to 200 PGs per OSD is probably better to utilize the flash drives better. Go with 2048. -- May the most significant bit of your life be positive. _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
