High availability on a farm - Sharepoint

There is little impact if search fails, people can still operate - they just
cannot search. Ask yourself the question if Excel Services fail how does it
impact your business - can they still operate say 90% business as usual and
if so then the impact of it failing is small (or large conversly).
Techncially, both services can fail as they are usually seen as
non-critical - like Index - and most functions of MOSS are not impacted.

Whats stopping you having search and excel on both app servers - have you
measured your throughput expectations and scaled accordingly? Also, under
failure scenario - whats stopping you activating the services on WFE servers
as part of your failure scenario.

Regards

John Timney (MVP)
http://www.johntimney.com
http://www.johntimney.com/blog


"Helen" <helen.jones.1234@gmail.com> wrote in message
news:0c7291c7-0fa7-4429-aed7-66a51e30353d@t47g2000hsc.googlegroups.com...
> Hi,
> I need to create a highly-available MOSS 2007 farm.
>
> I'd like to use the following topology:
>
> - Clustered SQL back end
> - Load balanced front end web servers
> - 2 App servers.
>
> As I understand the documentation, I should put seach on one app
> server and excel services on the other.
>
> The problem with this is that then I have single points of failure on
> my app boxes.
>
> Is there a way to have everything on one app server and have it
> failover to the other if something goes wrong?
>
> Thanks in advance.
>
> Helen