[cisco-voip] Sizing Callmanager Server

[Reto Gassmann]

Hi Jonathan

thanks for help.
We have six Callmanagers running (1 Pub and 5 Sub) and two of the handle the
phones and three handle CTI. THen there is the Publisher.

Reto

Zitat von Jonathan Charles <jonvoip at gmail.com>:

> If you have 5000 phones, you should have at least 3 servers, with 2500
> registered to each of the two subs and the pub backing up each.
> 
> However, I would recommend 4, with three subs, with one sub backing up
> another and the pub backing up the other sub.
> 
> 
> 
> Jonathan
> 
> On Dec 7, 2007 6:51 AM, Reto Gassmann <voip at mrga.ch> wrote:
> > Hello
> > we run our Callmanager 4.2(3) on HP DL 380 G4 Servers (MCS-7854 H2). We
> have the
> > phones configured on two servers. So there are about 2550 Phones per
> server. If
> > one server fails the phones change to the other and the phones sum up to
> over
> > 5000 phones on this single server.
> > In Service Parameters Configuration / Cisco CallManager I found an entry
> called
> > Maximum Number of Registered Devices* and the value is 5000. So what
> happens if
> > I have more than 5000 phones??
> >
> > According to the SRND the 7845 can handle up to 7500 devices. Has any one
> an
> > experience what happens to this if I enable cluster security?
> >
> > Thanks for help
> > Reto
> >
> >
> >
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>