Hi List, Le mardi 06 novembre 2007, Tore Halset a écrit : > 1) Dell 2900 (5U) > 8 * 146 GB SAS 15Krpm 3,5" > 8GB ram > Perc 5/i. battery backup. 256MB ram. > 2 * 4 Xeon 2,66GHz
In fact you can add 2 hot-plug disks on this setup, connected to the frontpane. We've bought this very same model with 10 15 rpm disks some weeks ago, and it reached production last week. So we have 2 OS raid1 disk (with /var/backups and /var/log --- pg_log), 2 raid1 disk for WAL and 6 disks in a RAID10, the 3 raids managed by the included Perc raid controller. So far so good! Some knowing-better-than-me people on #postgresql had the remark that depending on the write transaction volumes (40 to 60 percent of my tps, but no so much for this hardware), I could somewhat benefit in setting the WAL on the OS raid1, and having 8 raid10 disks for data... which I'll consider for another project. Hope this helps, -- dim
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