----- Original Message -----
From: "Brian Baquiran" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, January 10, 2002 7:47 AM
Subject: Re: [plug] clustering...


> You don't need clustering for 100k subs, really.

brian this is depends how aggressive your clients reading and sending their
emails *simulteneously* plus how big per email size per se. example if you
have 1 million subscribers but you have only 20 dial-up lines to access your
email service, of course one email server will do. :-> usually email service
bottleneck is disk i/o. busy disk i/o will affect others i/o like network
i/o and memory i/o for example or even disk i/o itself (blocking reads or
blocking writes which causes pendings and delays)... with this scenario,
equal load distribution clustering (or single-image cluster but not
advisable) is your answer here.

fooler.

_
Philippine Linux Users Group. Web site and archives at http://plug.linux.org.ph
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