On 8/21/07, Sachchida Ojha <sojha@xxxxxxxxxxxxxxxxxxx> wrote:
> We are having only two disk (40GB each). One disk is used for OS, App
> Server, and application. Second disk is used for postgresql database.
> It's a dual cpu machine having 2 GB of ram.
Even a single disk, with a battery backed caching controller will
generally run things like updates and inserts much faster, and is
usually a much better performance under load than a single disk.
I'd at least look at mirroring them for redundancy and better read performance.
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
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