General recommendation is to keep Exchange off your domain controllers, in all but the smallest environments. It sounds like you're well beyond small environments, so that's a good start.
The best estimator I've seen is to use a 4-to-1 ratio of CPUs in Exchange to GCs. So, 4 Exchange servers with 4 processors each would be 16 processors, therefore needing 4 processors of GC. I'd find the scenario of 4 single processor Exchange servers hosting a large number of users each to be scary at best. ------------------------------------------------------ Roger D. Seielstad - MCSE Sr. Systems Administrator Inovis - Formerly Harbinger and Extricity Atlanta, GA > -----Original Message----- > From: Petri [mailto:omatesti@;jippii.fi] > Sent: Thursday, October 31, 2002 12:08 PM > To: Exchange Discussions > Subject: Exchange 2000 and GC > > > Hi Folks, > > I have plans to create almost a big Exchange 2000 > environment. And I have > some open question where I need more a real life answers than MS-white > papers. > > At first I will create own AD site for Exchange 2000, so > users logons will > go other sites. Also I thought to install GCs on the same servers than > Exchanges are. I haven't seen any good answers we should I > not to do this. > Backup/recovery might be one and if I have problems with GC, > but still... > > But if I use GCs on the same server, then I might have better > performance > from GC, less users and only one Exchange per GC. Maybe I > need one server > more to decrease user counts on one server, but it should not > be so big. > So I don't need so much hardware. And now it is very easy to > dedicate one > GC per one Exchange 2000 servers. > > If I use separated GC servers: > MS recommends using one CPU in GC against four Exchange servers, which > have one CPU. This sounds like no matter how many users we > will have in > Exchange servers ? If I have eight servers where are 10 users > in each one. > Do I still need two GC servers (assuming that servers are one CPU > servers). > > Is here anyone who have more than ~3500 users per server which is not > clustered ? May I hear any comments from you, how it really > works ? How > often you are rebooting your servers or unmounting databases > ? Was it SLA > your only argument when you planned storage groups and databases ? > > > best regards > .-Pepi-. > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:leave-exchange@;ls.swynk.com > Exchange List admin: [EMAIL PROTECTED] > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:leave-exchange@;ls.swynk.com Exchange List admin: [EMAIL PROTECTED]
