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-----Original Message----- From: "Bo Lynch" blynch@ameliaschools.com
Date: Wed, 7 Jan 2009 18:45:22 To: CentOS mailing listcentos@centos.org Subject: Re: [CentOS] Email/GroupWare Suite
On Wed, January 7, 2009 6:06 pm, Andrew Cotter wrote:
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Rainer Duffner Sent: Wednesday, January 07, 2009 5:32 PM To: CentOS mailing list Subject: Re: [CentOS] Email/GroupWare Suite
Am 07.01.2009 um 22:24 schrieb Adam Tauno Williams:
You'll definitely want to look at a multi-server setup for that. Put your mail/web services on one box and database/LDAP on
another. Also, for
such a large installation you may even want to look at their commercially supported editions. Last time I checked (admittedly quite a while ago) the pricing wasn't too horrendous and I've heard good things
about their
support staff. We've always opted to go with the pure open source aka self- supported version but then again we're running installations with fewer than 300 users. I believe our largest installation
to date is
~100 users or so.
I would have thought that this was a small install:)
Agree. If you need multi-servers for 300 hundred users something is just designed wrong. Unless you've got 300 intense power users.
Even then... 300 users should fit on a desktop-class machine (provided you've got enough RAM). Zimbra uses Java / Jetty and thus likes to have enough RAM. On a single server, I'd go with at least 8 GB of RAM. Go with 64bit Linux (AMD64). CentOS is not supported, but it seems to work nicely or now...
Rainer _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
My problem would be that a single machine is a single point of failure. We are looking at zimbra and using at least two machines utilizing GFS and our SAN so we can withstand a failure. We have around 75 users but I am not willing to have email down due to a single machine failing. (Btw, these would be virtual machines running on xenserver)
Seeing as you are in education, if you are looking to actually pay for licensing a product and are actually interested in Zimbra, take a look at their hosted model. It is only for educational institutions right now (not that I know if they will make the offering more widely available) and may fit the bill even more by not having to manage the hardware.
My biggest concern is the long term viability of zimbra with the possibility of MicroHoo or someone else picking up Yahoo in the future. I don't want to start something with that one, but for a business this is definitely a concern. I believe some of this has been addressed in their licensing language and there is always the the GPL version which would probably survive for at least a short while.
Andrew
We would definitely be looking at a app for free in other words zimbra's open source release. We are planning on using existing hardware that we have. Currently we are running CentOS 5.2 with Pentium D 3.2 with 2gb ram and 2 500GB SATA drives in a RAID. The motherboard that we have will support a quadcore xeon if needed. Are setup now has no probs but we are only doing basic email and calendar within squirrelmail itself.
Bo Lynch
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