Hi,
on our large ceph cluster with 60 servers, 1600 OSDs, we have observed
that small system nvmes are wearing out rapidly. Our monitoring shows
mon writes on average about 10MB/s to store.db. For small system nvmes
of 250GB and DWPD of ~1, this turns out to be too much, 0.8TB/day or
1.5PB in 5 years, too much even for 3DWPD of the same capacity.
Apart from replacing the drives with larger ones, more durable,
preferably both, do you have any suggestions if these writes can be
reduced? Actually, the mon writes match 0.15Hz rate of .sst file
creation of 64MB....
Best regards,
Andrej
--
_____________________________________________________________
prof. dr. Andrej Filipcic, E-mail: Andrej.Filipcic@xxxxxx
Department of Experimental High Energy Physics - F9
Jozef Stefan Institute, Jamova 39, P.o.Box 3000
SI-1001 Ljubljana, Slovenia
Tel.: +386-1-477-3674 Fax: +386-1-425-7074
-------------------------------------------------------------
_______________________________________________
ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx
