Hi Anthony, El 22/10/20 a las 18:34, Anthony D'Atri escribió:
Yeah, didn't think about a RAID10 really, although there wouldn't be enough space for 8x300GB = 2400GB WAL/DBs. 300 is overkill for many applications anyway.
Yes, but he has spillover with 1600GB/12 WAL/DB. Seems he can make use of those 300GB.
Also, using a RAID10 for WAL/DBs will: - make OSDs less movable between hosts (they'd have to be moved all together - with 2 OSD per NVMe you can move them around in pairs Why would you want to move them between hosts?
I think the usual case is a server failure, so that won't be a problem. With small clusters (like ours) you may want to reorganize OSDs to a new server (let's say, move one OSD of earch server to the new server). But this is an uncommon corner-case, I agree :) Cheers -- Eneko Lacunza | +34 943 569 206 | elacunza@binovo.es Zuzendari teknikoa | https://www.binovo.es Director técnico | Astigarragako Bidea, 2 - 2º izda. BINOVO IT HUMAN PROJECT S.L | oficina 10-11, 20180 Oiartzun