Re: Hardware/OS recommendations for large databases (

Hi David,

Thanks for your reply. So how is that different than something like
Slony2 or pgcluster with multi-master replication? Is it similar
technology? We're currently looking for a good clustering solution
that will work on our Apple Xserves and Xserve RAIDs.

Thanks,

____________________________________________________________________
Brendan Duddridge | CTO | 403-277-5591 x24 |  brendan@clickspace.com

ClickSpace Interactive Inc.
Suite L100, 239 - 10th Ave. SE
Calgary, AB  T2G 0V9

http://www.clickspace.com

On Nov 27, 2005, at 8:09 PM, David Lang wrote:

> On Mon, 28 Nov 2005, Brendan Duddridge wrote:
>
>> Forgive my ignorance, but what is MPP? Is that part of Bizgres? Is
>> it possible to upgrade from Postgres 8.1 to Bizgres?
>
> MPP is the Greenplum propriatary extention to postgres that spreads
> the data over multiple machines, (raid, but with entire machines
> not just drives, complete with data replication within the cluster
> to survive a machine failing)
>
> for some types of queries they can definantly scale lineraly with
> the number of machines (other queries are far more difficult and
> the overhead of coordinating the machines shows more. this is one
> of the key things that the new version they recently announced the
> beta for is supposed to be drasticly improving)
>
> early in the year when I first looked at them their prices were
> exorbadent, but Luke says I'm wildly mistake on their current
> prices so call them for details
>
> it uses the same interfaces as postgres so it should be a drop in
> replacement to replace a single server with a cluster.
>
> it's facinating technology to read about.
>
> I seem to remember reading that one of the other postgres companies
> is also producing a clustered version of postgres, but I don't
> remember who and know nothing about them.
>
> David Lang
>