On Tue, Nov 15, 2005 at 12:09:40AM +0100, Johnny Ljunggren wrote: > Jim C. Nasby wrote: > >On Mon, Nov 14, 2005 at 07:36:44PM +0100, Michelle Konzack wrote: > >>I have three Sun Server where I have reserved on each Server a Raid-5 > > >Keep in mind that databases and RAID5 generally don't mix very well. > > oh, how come? > What is the ideal setup of a database server when it comes to storage? RAID5 has horrible write performance, especialy for random writes (which is what databases tend to do). If you're running essentially a read-only database then raid5 is OK. Otherwise you'll be much better off with RAID10. You also want to put the WAL on a seperate set of drives from the main database (though again that doesn't buy much if your database is read-only). -- Jim C. Nasby, Sr. Engineering Consultant jnasby@xxxxxxxxxxxxx Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461 ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
