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kibu

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We are using Kerio Connect with more than 300 users, 20% iOS Devices.

is Kerio good enough for Enterprise. can Kerio Connect handle 500, 1000 and more users? is there anyone using Kerio instead of Exchange with more than 500 users?

And is it possible to make Kerio available in a VMWare environment under HA aspects?

does anyone have experience using Kerio in Enterprise?

We don't want to switch to MS Exchange, but we need more Enterprise functionality and the sureness that Kerio Connect can handle 500 and more users.

A lot of questions, but it's a strategic decision for or against Kerio.


Any help and information would be appreciated

Thanks.



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tek_san

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We have Kerio running on our ESX vsphere 4.1 environment on win 2003 server as OS.
The store drive, which is about 350 GB is attached as an iscsi device provided by a netapp fas2020
We do not have any problems concerning access speed.
HA security is provided by vmware.
To put it short it is save and fast.
Of course we do run much more virtual machines on the same infrastructure.
We do have 2 quad core HP380G5 with 32 GB RAM and two netapp fas2020 for nfs and iscsi storage and smb fileserver services.
The virtual KMS is running smooth.
regards

Oliver

KC 7.3.1, Win2003 in vsphere 4.1, store drive attached via iSCSI, OS drive attached via NFS.
220+ IMAP Accounts: 210 OSX Mail /Entourage Clients, 10 Outlook 2003 KOC Clients - iPhones, Nokia E66, HTC 4350
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kibu

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350 GB mailstorage is not enough for us. we have powerusers with 10 - 20 GB mailstorage

how many users are running on your Kerio and what will happen, if Kerio crashes on vmware1? do you have vmware2 as standby?

thanks,
Tom
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bigmountain

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I have three Kerio Connect servers with two of them hosting over 500 users each. No performance problems and my clients seem to be very happy. Both machines are Xserves with quad 2.8 processors and 4GB ram. Both are using a RAID5 setup.

Preferred Kerio Partner and Cloud Solutions Provider - Offering both shared and dedicated Kerio Connect hosting solutions.
Visit us at http://bigmountainmail.com
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rcohen

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bigmountain wrote on Tue, 07 June 2011 01:30
I have three Kerio Connect servers with two of them hosting over 500 users each. No performance problems and my clients seem to be very happy. Both machines are Xserves with quad 2.8 processors and 4GB ram. Both are using a RAID5 setup.


I found RAID10 to be a DRAMATIC performance improvement over RAID5 or RAID6 when using Kerio.

Also, disabling Nagle's algorithm gave me a substantial performance boost, when using iSCSI.

I'm currently getting great results using a Nexenta ZFS iSCSI server, with SSD read caching.

For clients with tons of e-mail (like your 10+gb users), it also makes a huge difference to put their Kerio cache file on an SSD. If their C drive isn't an SSD, a junction is a good way to do this. We have added $100 Intel 40gb SSDs for several users with performance problems, as they come up.
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