Hi,
I am in the process of setting up a postgresql server with 12 SAS disks.
I am considering two options:
1) set up a 12 disks raid 10 array to get maximum raw performance from
the system and put everything on it (it the whole pg cluster, including
WAL, and every tablespcace)
2) set up 3 raid 10 arrays of 4 disks, and dispatch my data on these
disks via tablespaces :
data1 = pg cluster + references data (dimensions) tablespace
data2 = fact data tablespace
data3 = indices tablespace
Typical workload is either massive insert/update via ETL or complex
queries on big (10 millions tuples) tables with several joins (including
Mondrian ROLAP).
Does anyone have an opinion of what could give best results ?
Thanks,
Franck
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