Well...one thing that I have always looked for in a load balancing is a 'smart' capability to tell you that something is functional. I have found most of the balancers on the market to not allow what I consider smart balancing. Most will do a ping, open a port, check a URL, that sort of thing, but in a Remedy world just because ARServer allows you to open the port it is on, doesn't mean that the Remedy is functional. Just because the Mid-Tier login page opens doesn't mean that it's functional. I have found that some LB suites have various scripting capabilities, but in general I have found creating API based monitoring tools that provide 'port opening' capabilities to be a 'full' solution. The general capabilities that I'm referring to are session affinity (NLB has this apparently). The rest are probes, the ability to probe your intended subject to see if the capabilities you are looking for are functional. As previously discussed, most of these probes are 'dumb', but they are smarter than nothing. NLB doesn't seem to have any probe capability, the simple 'am I on' is enough to route traffic to the node. I personally think that it's important to probe deeply into the application to know that it's not only on, but functional before routing traffic, and NLB doesn't meet this probing requirement.
-----Original Message----- From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of Mauricio M. Sent: Monday, September 10, 2012 11:20 AM To: arslist@ARSLIST.ORG Subject: Re: MS Network Load Balancing (NLB) with AR Server Groups ** Hello, thank you, what would be some of those specific configurations or capabilities? -Mauricio 2012/9/10 Longwing, LJ CTR MDA/IC <lj.longwing....@mda.mil> Mauricio, I recently re-looked at MS NLB and found it to be 'lacking' of proper load balancing configuration capabilities, but I haven't looked real close at it either. I much prefer an independent LB tool. -----Original Message----- From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of Mauricio M. Sent: Monday, September 10, 2012 11:06 AM To: arslist@ARSLIST.ORG Subject: MS Network Load Balancing (NLB) with AR Server Groups ** Hello, Does anyone have any experience or feedback using Microsoft NLB for load balancing with AR System 7.6.04? There are a few old posts about NLB but nothing recent Thank you in advance, Mauricio _attend WWRUG12 www.wwrug.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" _attend WWRUG12 www.wwrug.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"
