Good hardware and really good administration practices. ------------------------------------------------------ Roger D. Seielstad - MCSE Sr. Systems Administrator Peregrine Systems Atlanta, GA
> -----Original Message----- > From: Dennis Depp [mailto:[EMAIL PROTECTED]] > Sent: Thursday, March 14, 2002 9:13 AM > To: Exchange Discussions > Subject: Re: E2k Clustering > > > Missy, > > If you would not recommend clustering, what do you recommend for high > availablility environments? > > Dennis Depp > > At 11:17 AM 3/13/2002 -0500, missy koslosky wrote: > >While I'm really not into arguing the point, while some people at > >Compaq and/or MS might recommend A/A over A/P, not everyone would. > > > >And yes, I'm one of the ones at Compaq who would recommend > A/P if I had > >a client that was dead set on clustering. But I'd try to > talk them out > >of clustering if at all possible. > > > >Missy > >----- Original Message ----- > >From: "Sabo, Eric" <[EMAIL PROTECTED]> > >To: "Exchange Discussions" <[EMAIL PROTECTED]> > >Sent: Wednesday, March 13, 2002 11:00 AM > >Subject: RE: E2k Clustering > > > > > >I talked to compaq/microsoft today, I am confident in our situation > >here that an active/active is the right choice for us. > > > >Currently we have the following: > >Server no. 1 - Quad Pentium Pro 200 MHZ (very old chipset > technology) - > >1 MEG cache on each processor - 2 GB RAM: (800 > mailboxes/heavy users) > >The most I ever saw the processor level was at 50% usage, > most of the > >time it is around 10%-20% usage > > > >Server no. 2 - dual Pentium III 500 MHZ Xeon Processor - 2 > Meg cache on > >each processor - 2 GB RAM (6000 mailboxes/light users)- The > most I ever > >saw these processors was at 35%, most of the time it is around 5%-10% > > > > > >We are going to the following: > >Two servers running w2k adv sp2 e2k sp2 - Quad Pentium III > Xeon 700 MHZ > >- 2 MB cache of each processor- 3 GB physical RAM using a > Storageworks > >San solution. > > > >I would say these machines should run around 5-10% CPU usage. > > > > > >Eric Sabo > >NT Administrator > >Computing Services Center > >California University of Pennsylvania > > > > > >-----Original Message----- > >From: Woodrick, Ed [mailto:[EMAIL PROTECTED]] > >Sent: Wednesday, March 13, 2002 9:59 AM > >To: Exchange Discussions > >Subject: RE: E2k Clustering > > > > > >Use Active/Passive clusters when possible to increase > scalability and > >reduce failover times. Active/Active clusters are only supported in > >2-node configurations in which each node has a maximum of 40 percent > >loading and 1900 simultaneous users. > > > >"Microsoft Exchange 2000 Server Service Pack 2 Deployment Guide" > > > >In short, there are NO issues when running in > Active/Passive, but when > >running in Active/Active you have a high chance of a > failover failing > >because of memory fragmentation. Active/Passive is going to > provide you > >with high reliability failover. Active/Active is going to > cause grief. > > > > > >Let me turn the tables, why do you think that Active/Active > is better > >than Active/Passive? > > > > > >Ed > > > >-----Original Message----- > >From: Etts, Russell [mailto:[EMAIL PROTECTED]] > >Posted At: Wednesday, March 13, 2002 9:38 AM > >Posted To: Microsoft Exchange > >Conversation: E2k Clustering > >Subject: RE: E2k Clustering > > > > > >Hi there > > > >I was looking over the white paper, and according to Microsoft, both > >active/passive and active/active are recommended in the below listed > >whitepaper. Do you have access to information that suggests > >otherwise?? > > > >Thanks > > > >Russell > > > >-----Original Message----- > >From: Woodrick, Ed [mailto:[EMAIL PROTECTED]] > >Sent: Tuesday, March 12, 2002 5:51 PM > >To: Exchange Discussions > >Subject: RE: E2k Clustering > > > > > >Make it Active/Passive as recommended and it's a moot point. > > > >-----Original Message----- > >From: Sabo, Eric [mailto:[EMAIL PROTECTED]] > >Posted At: Tuesday, March 12, 2002 5:42 PM > >Posted To: Microsoft Exchange > >Conversation: E2k Clustering > >Subject: RE: E2k Clustering > > > > > >When they talk about concurrent connections, does microsoft > mean if one > >users is using a mapi client that would mean 3 connections there for > >just one user. Is this correct? > > > >Eric Sabo > >NT Administrator > >Computing Services Center > >California University of Pennsylvania > > > > > >-----Original Message----- > >From: Etts, Russell [mailto:[EMAIL PROTECTED]] > >Sent: Tuesday, March 12, 2002 4:20 PM > >To: Exchange Discussions > >Subject: RE: E2k Clustering > > > > > >Hi there > > > >According to the MS whitepaper, here are the limits for active / > >active: > > > >"After you deploy your cluster, make sure you do the following: > > > >Limit the number of concurrent connection (users) per node > to a maximum > >of 1,900, and proactively monitor the cluster to insure that the CPU > >does not exceed 40 percent (load generated from users) loading." > > > >There is more information in the white paper that will help > you. The > >name is, "Deploying Microsoft Exchange 2000 server service pack 2 > >clusters". > > > >Hope this helps you > > > >Russell > > > > > > > > > >-----Original Message----- > >From: Ashby, Andrew [mailto:[EMAIL PROTECTED]] > >Sent: Monday, March 11, 2002 3:50 PM > >To: Exchange Discussions > >Subject: E2k Clustering > > > > > >We are evaluating an Exchange 2000 Active/Active cluster, but I > >remember an old limitation of 1000 clients per virtual server. > > > >In my searching of technet, and other knowledgebase > solutions, I have > >not been able to find this documented anywhere. > > > >Is there a technical limit to the number of clients per > virtual server? > > > >Proposed hardware: 2 quad processor, 2GB systems connected > to SAN via > >fibre channel. 100MB NIC connections. > > > >Roughly 4k users. > > > >Thanks, > > > >Andrew > > > >_________________________________________________________________ > >List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > >Archives: http://www.swynk.com/sitesearch/search.asp > >To unsubscribe: mailto:[EMAIL PROTECTED] > >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:[EMAIL PROTECTED] > >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:[EMAIL PROTECTED] > >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:[EMAIL PROTECTED] > >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:[EMAIL PROTECTED] > >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:[EMAIL PROTECTED] > >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:[EMAIL PROTECTED] > >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:[EMAIL PROTECTED] > >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:[EMAIL PROTECTED] > 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:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
