We just set up a similar environment with 7.6.04. We setup 1 mid-tier to 1 ARSystem server and had another ARSystem server in the server group for admin functions, so the final was 2 mid-tiers and 3 arsystem servers. Keep in mind that the sticky bit needs to be enabled between the load balancer and the mid-tiers. With 7.6.04 you do not need to setup the sticky bit between the load balancer and the arsystem server group. We guestimated 300 users per mid-tier. With this setup it is easy enough to add more mid-tiers and arsystem server as you add on more users. Hugo from BMC had a great presentation on this at the last WWRUG if you can get your hands on the presentation.
Brian -----Original Message----- From: Action Request System discussion list(ARSList) [mailto:[email protected]] On Behalf Of Brian Goralczyk Sent: Wednesday, May 16, 2012 6:46 PM To: [email protected] Subject: Re: Load Balancer & Mid Tiers Mike, I am sorry, I meant that the AR server should be able to handle it. I would go with the 150 limit per mid tier. I haven't tested it to see how many it can actually run, but it can be pretty frustrating if you don't have enough of them to handle the load. I believe that you only need one AR server based on concurrent users SOLELY. Fail-over and disaster recovery is a different ball of wax. Server groups are a great way to protect yourself. Based on what you are saying I would say a minimal setup would be 2 good webservers to handle the mid tier, one app server and one db server. But keep in mind that is minimal. Depending on how much money you have to spend I would double everything to start. Patrick has a pretty good recommendation. Brian Goralczyk Phone 574-643-1144 Email [email protected] On Wed, May 16, 2012 at 3:07 PM, Hocks, Mike (DOT) <[email protected]> wrote: > Brian, thanks a lot for the info...so it sounds like the rule of > estimating 150 concurrent connections per mid-tier is way off > base...we are running a quad core xeon proc with 24GB of RAM w/ > Windows 2008 64BIT ... sounds like we are in good shape our > environment? We do have Mid-Tier and the AR System all on the same > box (pre-config stack install) > > Thanks again, > -Mike > > -----Original Message----- > From: Action Request System discussion list(ARSList) > [mailto:[email protected]] On Behalf Of Brian Goralczyk > Sent: Wednesday, May 16, 2012 2:51 PM > To: [email protected] > Subject: Re: Load Balancer & Mid Tiers > > I would say that 500 concurrent users isn't to much for some servers to handle. It all depends on your hardware and your code. If you are using out of the box, what are those 500 users going to be doing? If it is custom code, how cleanly is it written. Performance testing and improvement is a job all on it's own. But I have had systems that have dealt with that level of load without a problem. The biggest issue is the single point of failure mentioned. > > > Brian Goralczyk > Phone 574-643-1144 > Email [email protected] > > > On Wed, May 16, 2012 at 1:28 PM, Hocks, Mike (DOT) <[email protected]> wrote: >> Interesting, we need to build out our environment for 500 concurrent connections, do you think we should plan for more AR Servers to accommodate 500 concurrent connection? >> >> -----Original Message----- >> From: Action Request System discussion list(ARSList) >> [mailto:[email protected]] On Behalf Of pritch >> Sent: Wednesday, May 16, 2012 2:22 PM >> To: [email protected] >> Subject: Re: Load Balancer & Mid Tiers >> >> You can, but then you still have a potential single point of failure (or bottleneck). >> >> ----- Original Message ----- >> From: "Andrew C Goodall" <[email protected]> >> To: [email protected] >> Sent: Wednesday, May 16, 2012 3:11:15 PM >> Subject: Re: Load Balancer & Mid Tiers >> >> You can have multiple point to one. >> >> Regards, >> >> Andrew C. Goodall >> Software Engineer >> Development Services >> [email protected] >> jcpenney >> 6501 Legacy Drive >> Plano, TX 75024 >> jcp.com >> >> -----Original Message----- >> From: Action Request System discussion list(ARSList) >> [mailto:[email protected]] On Behalf Of Mike Hocks >> Sent: Wednesday, May 16, 2012 2:06 PM >> To: [email protected] >> Subject: Load Balancer & Mid Tiers >> >> A question regarding a Load balancer and multiple Mid Tiers .... Can I have multiple mid tiers point to 1 AR Server or do I need to have an AR Server for each Mid Tier? >> >> We are running the 7.6.04 from the Pre Config Stack Installer on a >> Windows 2008 Server with a SQL backend >> >> Thank you! >> -Mike >> >> _____________________________________________________________________ >> _ _________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org >> attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are" >> The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. If the reader of this message is not the intended recipient, you are hereby notified that your access is unauthorized, and any review, dissemination, distribution or copying of this message including any attachments is strictly prohibited. If you are not the intended recipient, please contact the sender and delete the material from any computer. >> >> >> _____________________________________________________________________ >> _ _________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org >> attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are" >> >> _____________________________________________________________________ >> _ _________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org >> attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are" >> >> _____________________________________________________________________ >> _ _________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org >> attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are" > > ______________________________________________________________________ > _________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org > attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are" > > ______________________________________________________________________ > _________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org > attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are" ____________________________________________________________________________ ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are" _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are"
