[cisco-voip] Fw: CUCM cluster capacity

[Scott Voll]

in all reality a better design would be to have your 7835 as the Pub.
 Register a 1000 user per sub.  This would give you a total of 2000 users
with the ability to fail either or both back to the Pub.

If you need 4500, I would add a 7845 as a Pub and register your users to the
other three and then use the 7845 as the fail over for the other three.

YMMV.

Scott

On Thu, Aug 4, 2011 at 7:05 AM, Wellnitz, Erick A. <
erick.wellnitz at kattenlaw.com> wrote:

>  I believe the 1000 per 7825 and 2500 per 7835 is correct.  However, these
> are maximums.  You must account for and failover in your design.****
>
> ** **
>
> If you put 4500 ‘users’  in your design, you have no capacity for
> accommodating a node failure.****
>
> ** **
>
> ** **
>
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Damian Turburville
> *Sent:* Thursday, August 04, 2011 8:46 AM
>
> *To:* cisco-voip at puck.nether.net
> *Subject:* [cisco-voip] Fw: CUCM cluster capacity****
>
>  ** **
>
> Can anyone help with this at all? I would use the cisco sizing tool but it
> is only available to partners annoyingly.****
>
> Thanks,****
>
> Damian****
>
> ** **
>
> ----- Forwarded Message -----
> *From:* Damian Turburville <d_turburville at yahoo.com>
> *To:* "cisco-voip at puck.nether.net" <cisco-voip at puck.nether.net>
> *Sent:* Wednesday, 3 August 2011, 16:57
> *Subject:* [cisco-voip] CUCM cluster capacity****
>
> Hi,****
>
> I realise this can depend on a lot of factors but I am looking for a rough
> figure for capacity (no. of users) on a CUCM 6.1 cluster consisting of****
>
> ** **
>
> Publisher - 7825-H3****
>
> Subscriber1 - 7825-H3****
>
> Subscriber2 - 7835-I2****
>
> ** **
>
> Now according to the SRND a 7825 server can handle 1000 users per server
> and a 7835 can handle 2500, does that mean in the above example that I can
> have 4500 users? Or should I only count the Subscribers for a total of 3500
> or should I base it on the capacity of the Publisher for a total of 1000.*
> ***
>
> Also in the above example what would happen if I have 3500 users and
> Subscriber2 goes down, would the system fall over entirely as it would be
> trying to support 3500 users with much less capacity?****
>
> ** **
>
> Many thanks for any help with this,****
>
> Damian****
>
>
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