Le lundi 19 février 2007 16:33, Tom Lane a écrit : > Martijn van Oosterhout <kleptog@svana.org> writes: > > Somehow this seems like implementing RAID within postgres, > > RAID and LVM too. I can't get excited about re-inventing those wheels > when perfectly good implementations already exist for us to sit on top of.
I though moving some knowledge about data availability into PostgreSQL code could provide some valuable performance benefit, allowing to organize reads (for example parallel tables scan/indexes scan to different volumes) and obtaining data from 'quicker' known volume (or least used/charged). You're both saying RAID/LVM implementations provide good enough performances for PG not having to go this way, if I understand correctly. And distributed file systems are enough to have the replication stuff, without PG having to deal explicitly with the work involved. May be I should have slept after all ;) Thanks for your time and comments, regards, -- Dimitri Fontaine ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq