Re: Recommended Hardware Configurations

2006-12-17 Thread David T. Ashley

On 12/17/06, Mike Duffy <[EMAIL PROTECTED]> wrote:


I am sure this question has probably been asked in this group before, but
I would like to get an
updated answer.

If you were building your own boxes to run clustered MySQL servers, how
would you configure the
boxes? (This would of course be for an enterprise level database system.)

I am looking for an optimal solution that balances cost and performance;
and yes, I realize that
is a very subjective standard.



I once knew someone who was too cheap to buy a computer case, so he mounted
a computer motherboard on a piece of plywood and used it.

I don't recommend plywood, but for a cluster you may be able to stack cheap
motherboards, power supplies, disk drives, and fans in a single larger metal
enclosure (depends on how handy you are at this kind of fab in general).

This is at the EXTREME low end of price.  Even with 5G of RAM on each one,
you may be able to average $600 - $700 per motherboard, all costs included.

I'd start with a half-height rack enclosure, and see if you can develop a
regular pattern to "repeat" within.

Enterprise-grade servers are EXPENSIVE.


Re: Recommended Hardware Configurations

2006-12-17 Thread Chris White
On Sunday 17 December 2006 13:20, Mike Duffy wrote:
> My intuitive judgment is that we would be better having several smaller
> systems in a cluster rather than one huge powerful system and that we would
> be better off building rather than than buying.  If you think I am wrong on
> either of these points, please share your thoughts and send a link to a
> recommended system.

Well, this gets tricky.  If you take a look at:

http://www.mysql.com/products/database/cluster/faq.html

you'll notice very high requirements for each cluster node.  This is mainly 
due to the fact that mysql clustering does not support filesystem writes 
(right now at least, I've heard that's supported later).  That said, the 
database has to be stored into memory.  If you have a 10 node cluster 
supporting a 5 gig database, that means all 10 boxes have to have 5+gigs of 
memory, otherwise it won't work.  

A single system is a bit easier to manage, but you have to be extra particular 
about your failsafes, as you've now centralized the point of failure to 1 
machine.  On the other hand, should your database grow, you just feed it more 
ram and be done with it, or upgrade the server later on (if you get a really 
large db).  

-- 
Chris White
PHP Programmer
Interfuel

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Recommended Hardware Configurations

2006-12-17 Thread Mike Duffy
I am sure this question has probably been asked in this group before, but I 
would like to get an
updated answer.

If you were building your own boxes to run clustered MySQL servers, how would 
you configure the
boxes? (This would of course be for an enterprise level database system.)

I am looking for an optimal solution that balances cost and performance; and 
yes, I realize that
is a very subjective standard.

My intuitive judgment is that we would be better having several smaller systems 
in a cluster
rather than one huge powerful system and that we would be better off building 
rather than than
buying.  If you think I am wrong on either of these points, please share your 
thoughts and send a
link to a recommended system.

Sincerely,

Mike



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