I'm weighing options for a new server. In addition to PostgreSQL, this
machine will handle some modest Samba and Rsync load.
I will have enough RAM so the virtually all disk-read activity will be
cached. The average PostgreSQL read activity will be modest - a mix of
single-record and fairly large (reporting) result-sets. Writes will be
modest as well but will come in brief (1-5 second) bursts of individual
inserts. The rate of insert requests will hit 100-200/second for those
brief bursts.
So...
Am I likely to be better off putting $$$ toward battery-backup on the
RAID or toward adding a second RAID-set and splitting off the WAL
traffic? Or something else?
Cheers,
Steve
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