Genesys CTI User Forum

Genesys CTI User Forum => Genesys CTI Technical Discussion => Topic started by: CTIgem on July 15, 2009, 01:53:49 PM

Title: GVP 7.6 redundancy
Post by: CTIgem on July 15, 2009, 01:53:49 PM

While I'm prepping 7.6 upgrade, question just pop up in my head.
I guess we'll have two vcs so it naturally takes care of redundancy.
What about EMS? Is there a way to have two EMS running?
What if EMS and VCSs goes down and EMS never comes back up?

Any suggestions?

Thanks.

Title: Re: GVP 7.6 redundancy
Post by: René on July 15, 2009, 03:07:43 PM

Hi CTIgem,

There is no officially supported redundancy available as EMS isn't considered to be critical component from operational point of work - VCS works even without EMS. Of course, you can't do any changes in the configuration while EMS is down. I think that you can even restart VCS/IPCS while EMS.

In theory, it should be possible to implement some kind of LDAP synchronization and run second (backup) LDAP server on different host but I've never tested it and as I know it isn't supported by Genesys.

R.

Title: Re: GVP 7.6 redundancy
Post by: CTIgem on July 15, 2009, 06:46:42 PM

Thanks, Rene.
I don't have to waste my time searching for an answer ;D

Title: Re: GVP 7.6 redundancy
Post by: CTIgem on July 17, 2009, 03:13:56 PM

Rene,
So I don't need to have running EMS runtime engine such as Iserver Client, Bandwidth/Policy manager and VCS still will work?

Thanks.

Title: Re: GVP 7.6 redundancy
Post by: René on July 20, 2009, 04:34:42 PM

Hi CTIgem,

I was referring mainly to EMPS (LDAP Server) in my post and not to EMS run-time components like IVR-Server client, Policy Manager etc. Sorry for confusion...

R.

Title: Re: GVP 7.6 redundancy
Post by: Gulden_NL on July 20, 2009, 09:02:33 PM

In my configurations (four sites) I clustered the following EMS components: EMS3:  SQL Server, VAR, EMPS & EMS5: SQL Server, EventC, Unified Login

I do [u]not[/u] cluster EMS1: EMPS, LDAP, Dispenser, or 
EMS2: Policy Mgr, BWM, Network Monitor, or EMS4: Unified Login, Reporter
 Status Monitor, EventC, VAR

We've run four nines availability over 40 months since going live with this architecture.  I realize that this is a larger configuration with thousands of ports at each site, but it should give you an idea of one possible configuration.

Title: Re: GVP 7.6 redundancy
Post by: CTIgem on July 21, 2009, 12:51:02 PM

So what do you do if EMS1 or EMS2 goes down and not able to recover from it?

Title: Re: GVP 7.6 redundancy
Post by: cavagnaro on November 03, 2009, 01:41:58 AM

Hey CTIgem, how did you solved this? I'm facing a new project where I have to consider all this stuff...any good news?

Title: Re: GVP 7.6 redundancy
Post by: CTIgem on November 03, 2009, 01:29:56 PM

If you are using LDAP, there is utility out there that you can backup the contents of LDAP.
So if you configuration wipe out for some reason, you can restore from it.

Title: Re: GVP 7.6 redundancy
Post by: cavagnaro on November 03, 2009, 07:11:45 PM

Can you detail how you distributed the components and made the HA configuration please?

Title: Re: GVP 7.6 redundancy
Post by: CTIgem on November 04, 2009, 02:23:26 PM

My call center isn't that big so it's rather simple for HA requirement.
My goal was to have IVR answer calls without distruption with three servers (EMPS, VCS1 and VCS2).
At any one time, one of VCS server will be taking calls. And calls can be overflow to other VCS server.

So I have

EMPS (EMPS configuration is backed up for restore purpose)
VCS1 (IVR client, dispenser)
VCS2 (Backup IVR client, Backup dispenser)

In this setup, we are in operation as long as one of VCS is available.
Hope this help you.

Title: Re: GVP 7.6 redundancy
Post by: cavagnaro on November 04, 2009, 03:52:34 PM

Great, that is similar situation for me. So if EMPS goes down, VCS will still keep working right?

Title: Re: GVP 7.6 redundancy
Post by: CTIgem on November 04, 2009, 04:11:49 PM

7.6?

Title: Re: GVP 7.6 redundancy
Post by: CTIgem on November 04, 2009, 04:13:53 PM

Have something to go to in "Application URL in case of failures:".

Title: Re: GVP 7.6 redundancy
Post by: cavagnaro on November 12, 2009, 01:16:25 AM

Thanks will have to test in lab

Title: Re: GVP 7.6 redundancy
Post by: craigr on November 13, 2009, 05:13:37 PM

I do not think there is any easy answer to this. We have EMPS1 and EMPS2 with a manual process to duplicate OpenLDAP data between them. e.g. copy the /data files. We then configure IPCS1 to talk to EMPS1 and IPCS2 to talk to EMPS2.

Craig