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Re: Optimal Postgres setup with 6 disks total (including OS)

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Hi Josh,

How long is a piece of string?

You will probably find that Raid 1 is almost as fast as Raid 1+0 depending on your application.

In our setup we have Raid 1 for the System volumes, and 1x Raid 1 for the Xlog, and 6x Raid 1 for the data.

We spread the data across multiple disks based on usage.


On 06/12/2006, at 4:59 AM, Josh Bonnett wrote:

Hi, I am looking at buying a server with 6 36gb 15k rpm scsi disks in it and I was wondering what people would recommend for a disk setup. The six need to include the os and such. As it is right now we are thinking 1 4 disk raid 1+0 volume for postgres and 1 raid 1 volume for os and the swap file. Getting a 7th disk is economically impractical. What do people think? This is a fairly write heavy db compared to some so I was thinking it would be good to avoid raid 5 or am I wrong here? What do people think?

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