#1 2008-02-07 11:36:53

**_winning_wiin_**

concurrent user

Hi there,
we are about to set up a system (our own service) that should manage a load of up to 400 concurrent users.
My question is - which item poses a limitation? The database, of which we are trying the enclosed one for now or the server, which is is a fast virtual machine with high speed network and may have to be multiplied in such a case ?

thanx

greets

DW

**_michael_**

Re: concurrent user

Adobe (and we do as well) suggest no more than 500 concurrent meeting users per server.  With your system approaching 400 concurrent users, you should definitely be considering a second Connect Enterprise server, load balancer, and if you are using SSL, that should be deployed on a separate server as well.  The most common bottlenecks for organizations tend to be bandwidth (with 400 users, you could anticipate hitting levels around 140-200Mb/s if using video, VoIP, or screensharing), then the server capacity, then database.

**_winning_wiin_**

Re: concurrent user

Thanks a lot for your insight!

To explain my topic a bit more, we at oncampus.de are about to set up germany's biggest AC-installation so far and therefore appreciate any experience from similar setups elsewhere.
As you told, it is recommended to have more than one server for that many concurrent users (400...) and that they should be load-balanced.

We will start with one server though, because we run this on VMWare and we expect less than 100 users in the beginning.

But because everyone can only estimate how things work, it could be well necessary to set up a second server soon.
Hence there are some questions :-)

Did you set up "physical" AC-servers ?

Is the load-balancer a separate machine or a software-solution?

Has this anything to do with Adobe's Cluster-solution ?

Is a full version of the DB involved?

We have 100Mbit/s internet (gross value); is that OK for up to ~200 users (most time no screen-sharing) ?

Thanx again
greets
Dirk Winning
oncampus.de

**_sean_at_RealEyes_**

Re: concurrent user

Adobe (and we do as well) suggest no more than 500 concurrent meeting users per server.  With your system approaching 400 concurrent users, you should definitely be considering a second Connect Enterprise server, load balancer, and if you are using SSL, that should be deployed on a separate server as well.  The most common bottlenecks for organizations tend to be bandwidth (with 400 users, you could anticipate hitting levels around 140-200Mb/s if using video, VoIP, or screensharing), then the server capacity, then database.

Michael - do you have any insight on, say, 400 conc meeting users and like 100 stream of Presenter and/or meetings, all at the same time. I'm curious where the breakdowns may happen, namely the meeting users seeing PPT slides load slower, or VoIP getting chunky.

Thoughts?