It comes under Server Startup:
http://www.postgresql.org/docs/8.2/static/server-start.html
Ray Stell wrote:
> Many thx. It that in the doc?
>
>
> On Thu, Feb 15, 2007 at 06:21:05PM +0000, Andy Shellam (Mailing Lists) wrote:
>
>> The cluster's "name" is only the file-system's directory path.
>>
>> You can easily rename this directory, as long as you pass the relevant
>> directory name to pg_ctl's -D parameter (which tells PostgreSQL which
>> database "cluster" to use.)
>>
>> It goes without saying, don't move the directory while PostgreSQL is
>> running.
>>