On Wed, 2003-11-12 at 12:34, Suchandra Thapa wrote: > I'm moving a webmail service over to use a postgresql database for > storage and wanted to get any tips for optimizing performance. The > machine will be a multiprocessor (either 2 or 4 cpu ) system with a raid > array. What layout should be used? I was thinking using about using a > raid 1+0 array to hold the database but since I can use different array > types, would it be better to use 1+0 for the wal logs and a raid 5 for > the database?
How much in total storage? If you have (or will have) > ~6 disks, go for RAID 5 otherwise 10 is probably appropriate. > The database gets fairly heavy activity (the system handles about 500MB > of incoming and about 750MB of outgoing emails daily). I have a fairly > free rein in regards to the system's layout as well as how the > applications will interact with the database since I'm writing the > code. These are archived permanently -- ~450GB of annual data? Or is the data removed upon delivery? ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster
