In order to give response to this question I wrote this approach: http://theremedyforit.com/2012/07/estimating-the-required-number-of-licenses/
That was my idea for a paper for the WWRUG12. And to develop the calculator in a web application of free use. But, now I know I won't go, I publish it on my blog. Any feedback would be appreciated. Regards, Jose Huerta On Fri, Jun 29, 2012 at 10:45 PM, Mauricio M. <mau.rem...@gmail.com> wrote: > ** I guess the first approach and easiest way to proceed is to estimate a > 3:1 ratio or 5:1 ratio according to the "book", maybe applying some % up, > and providing with two or three scenarios. After that, more precise > measurment should be done, we need to measure the actual license usage over > a period of time, using any tool available in the market or custom method > and adjust the count, but in order to this to happen, the application > should have been previously approved and minimum licenses provisioned and > management would like to know how we are estimating the floating count, > with a more solid argument than the standard ratio recommended by the book, > which is not general law ...if I say 100 licenses, why 100? why 80? why not > 70? - I guess a raw formula could be used based on some criteria, again, it > will not be perfect but certainly more accurate > > What do you think? > > > 2012/6/29 Misi Mladoniczky <m...@rrr.se> > >> Hi, >> >> In that case they need to spend much more money, as they have to spend >> according to the budget instead of their actual need. >> >> I understand that you NEED a budget, but that does not mean that you have >> to SPEND the whole budget. >> >> And I also understand that sales reps might have a different idea on how >> to proceed, as this way of doing it invariably saves the customer money... >> >> Best Regards - Misi, RRR AB, http://rrr.se >> >> > I think that the problem is that he can't buy extra licenses. I mean, He >> > needs to provide a budget to assist the decision of buying Remedy. To >> buy >> > a >> > minimum number of licenses and then increase as needed, is to make the >> > decision without known the final TCO. >> > >> > >> > Jose M. Huerta >> > Project Manager** >> > >> > Movil: 661 665 088 >> > >> > Telf.: 971 75 03 24**** >> > >> > Fax: 971 75 07 94**** >> > >> > <http://www.sm2baleares.es/>**** >> > >> > SM2 Baleares S.A. >> > C/Rita Levi **** >> > >> > Edificio SM2 Parc Bit**** >> > >> > 07121 Palma de Mallorca**** >> > >> > <http://es-es.facebook.com/pages/SM2-Baleares/158608627954> >> > <http://twitter.com/#!/SM2Baleares> >> > <http://www.linkedin.com/company/sm2-baleares> >> > >> > La información contenida en este mensaje de correo electrónico es >> > confidencial. La misma, es enviada con la intención de que únicamente >> sea >> > leída por la persona(s) a la(s) que va dirigida. El acceso a este >> mensaje >> > por otras personas no está autorizado, por lo que en tal caso, le >> rogamos >> > que nos lo comunique por la misma vía, se abstenga de realizar copias >> del >> > mensaje o remitirlo o entregarlo a otra persona y proceda a borrarlo de >> > inmediato.**** >> > >> > P Por favor, no imprima este mensaje ni sus documentos adjuntos si no es >> > necesario. >> > >> > >> > >> > On Fri, Jun 29, 2012 at 10:55 AM, Misi Mladoniczky <m...@rrr.se> wrote: >> > >> >> Hi, >> >> >> >> I would divide it into two things. One is budget, and the other thing >> >> how >> >> you actually do when you buy your licenses. >> >> >> >> Budget: >> >> 1. Look into the sky and figure out your concurrent user count >> >> 2. Do a 1:1 ratio (50% fixed 50% floating) and use that as a basis for >> >> your budget >> >> >> >> Buying licenses: >> >> 1. Buy a minimum number of licenses >> >> 2. Buy RRR|License <--- ADV >> >> 3. Increase the license count on your server as dictated by RRR|License >> >> for a month or three >> >> 4. Pay BMC for the number of extra licenses that you figured out that >> >> you >> >> REALLY need >> >> >> >> This goes for new ITSM systems or custom systems, or as in your case a >> >> new >> >> custom application that rides beside an existing system. >> >> >> >> Best Regards - Misi, RRR AB, http://www.rrr.se (ARSList MVP >> 2011) >> >> >> >> Products from RRR Scandinavia (Best R.O.I. Award at WWRUG10/11): >> >> * RRR|License - Not enough Remedy licenses? Save money by optimizing. >> >> * RRR|Log - Performance issues or elusive bugs? Analyze your Remedy >> >> logs. >> >> Find these products, and many free tools and utilities, at >> >> http://rrr.se. >> >> >> >> > Hi Misi, >> >> > But in your experience how do you do when it is for budgeting >> >> purposes, >> >> > these are custom applications that have not been used before and they >> >> need >> >> > to provision the licenses needed for the future load ... you say the >> >> only >> >> > way to have a number close to reality is based only in previous usage >> >> > analysis? >> >> > Regards, >> >> > Mauricio >> >> > >> >> > 2012/6/28 Misi Mladoniczky <m...@rrr.se> >> >> > >> >> >> Hi, >> >> >> >> >> >> I would say that there is no rule of thumb. >> >> >> >> >> >> Even if you have historical data, you could come up with 5:1 or 1:5, >> >> all >> >> >> depending how your system is used. >> >> >> >> >> >> One days worth of data will give you some information, and one week >> >> will >> >> >> give you a very good estimate. >> >> >> >> >> >> You can even try the free version of RRR|License, and it will tell >> >> you >> >> >> the >> >> >> ratio that is optimum for you. You can even use the change planner >> in >> >> >> the >> >> >> test version, where you can put in a future number of expected >> users: >> >> >> http://rrr.se/tmp/rrrLicChangePlanner.html >> >> >> >> >> >> Best Regards - Misi, RRR AB, http://www.rrr.se (ARSList MVP >> >> 2011) >> >> >> >> >> >> Products from RRR Scandinavia (Best R.O.I. Award at WWRUG10/11): >> >> >> * RRR|License - Not enough Remedy licenses? Save money by >> optimizing. >> >> >> * RRR|Log - Performance issues or elusive bugs? Analyze your Remedy >> >> >> logs. >> >> >> Find these products, and many free tools and utilities, at >> >> >> http://rrr.se. >> >> >> >> >> >> > Hi Jose, >> >> >> > >> >> >> > So in order to simplify a model, don´t you think you can compare >> >> this >> >> >> > distribution to the behaviour of ocassional users logging in and >> >> >> updating >> >> >> > records? because RRRLicense measures over a period of time and I >> do >> >> >> not >> >> >> > have historical data and no window frame to measure from this >> >> present >> >> >> time >> >> >> > into the future >> >> >> > >> >> >> > Thank you!!! >> >> >> > >> >> >> > Mauricio >> >> >> > >> >> >> > 2012/6/28 Jose Huerta <jose.hue...@sm2baleares.es> >> >> >> > >> >> >> >> ** Erlang formulas assume Poisson distribution. Your team won't >> be >> >> >> >> distributed in any computable wat. So I recommend you to study >> the >> >> >> use. >> >> >> >> Maybe you can try the RRR|License tool. >> >> >> >> >> >> >> >> Jose M. Huerta >> >> >> >> Project Manager** >> >> >> >> >> >> >> >> Movil: 661 665 088 >> >> >> >> >> >> >> >> Telf.: 971 75 03 24**** >> >> >> >> >> >> >> >> Fax: 971 75 07 94**** >> >> >> >> >> >> >> >> <http://www.sm2baleares.es/>**** >> >> >> >> >> >> >> >> SM2 Baleares S.A. >> >> >> >> C/Rita Levi **** >> >> >> >> >> >> >> >> Edificio SM2 Parc Bit**** >> >> >> >> >> >> >> >> 07121 Palma de Mallorca**** >> >> >> >> >> >> >> >> < >> http://es-es.facebook.com/pages/SM2-Baleares/158608627954 >> >> > >> >> >> >> <http://twitter.com/#%21/SM2Baleares> >> >> >> >> <http://www.linkedin.com/company/sm2-baleares> >> >> >> >> >> >> >> >> La información contenida en este mensaje de correo electrónico es >> >> >> >> confidencial. La misma, es enviada con la intención de que >> >> únicamente >> >> >> >> sea >> >> >> >> leída por la persona(s) a la(s) que va dirigida. El acceso a este >> >> >> >> mensaje >> >> >> >> por otras personas no está autorizado, por lo que en tal caso, le >> >> >> >> rogamos >> >> >> >> que nos lo comunique por la misma vía, se abstenga de realizar >> >> copias >> >> >> >> del >> >> >> >> mensaje o remitirlo o entregarlo a otra persona y proceda a >> >> borrarlo >> >> >> de >> >> >> >> inmediato.**** >> >> >> >> >> >> >> >> P Por favor, no imprima este mensaje ni sus documentos adjuntos >> si >> >> no >> >> >> es >> >> >> >> necesario. >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> On Thu, Jun 28, 2012 at 9:23 PM, Mauricio M. >> >> <mau.rem...@gmail.com> >> >> >> >> wrote: >> >> >> >> >> >> >> >>> ** Hello All, >> >> >> >>> >> >> >> >>> >> >> >> >>> I know this is and old age question but it continues to be >> >> relevant >> >> >> on >> >> >> >>> how you estimate the appropiate number of floating licenses that >> >> >> will >> >> >> >>> be >> >> >> >>> needed in the near future for a given application, but not >> taking >> >> >> into >> >> >> >>> account any past behaviour, I mean, suppose that we do not have >> >> >> >>> historical >> >> >> >>> data to reference, but only an expected behaviour in regards to >> a >> >> >> total >> >> >> >>> number of users, total number of tickets, etc. As a rule of >> thumb >> >> we >> >> >> >>> might >> >> >> >>> use a given proportion, 3:1 or 5:1 but how you normally manage >> to >> >> >> hold >> >> >> >>> up a >> >> >> >>> more solid number? I was wondering if anyone has used Erlang >> >> >> formulas >> >> >> >>> to >> >> >> >>> get a more solid number? >> >> >> >>> >> >> >> >>> Thank you and Regards, >> >> >> >>> >> >> >> >>> -Mauricio >> >> >> >>> _attend WWRUG12 www.wwrug.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" >> >> >> > >> >> >> >> >> >> >> >> >> >> >> >> _______________________________________________________________________________ >> >> >> 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" >> > > _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"
