10 Replies Latest reply on Aug 28, 2008 9:52 PM by vmmadhu

    Non-virtulazation to Virtulazation consolidation

    vmmadhu Novice

       

      Hi,

       

       

      Exactly what points to be consided while moving datacenter from non-virtulazation environment to virtualazation environment , i seen Assess , plan & Design , manage and deploy but in that what points to consider can you give details steps about

       

       

      Thanks

       

       

        • 1. Re: Non-virtulazation to Virtulazation consolidation
          mreferre Virtuoso

           

          Well this is going to be tough to respond on a forum.

           

           

          It's like me sitting in the cockpit of a Boeing 747 and asking on a pilots' forum "can you exactly tell me which buttons to push in order to take this beast off ground?"

           

           

          This might be a starting point though: http://viops.vmware.com/index.html

           

           

          Massimo.

           

           

          • 2. Re: Non-virtulazation to Virtulazation consolidation
            vmmadhu Novice

             

            Hi King,

             

            I mean some kind of checklist to be performed before doing the plan & design, so i required those checklsit points so if you have points please let me know. that would be helpful to me to the plan and design

             

             

            Thanks

             

             

             

             

             

            • 3. Re: Non-virtulazation to Virtulazation consolidation
              Texiwill Guru
              User ModeratorsvExpert

              Hello,

               

              Many of the books out there contain such checklists, at least 'VMWare ESX Server in the Enterprise: Planning and Securing Virtualization Servers', Copyright 2008 Pearson Education does.

               

              As does the new Oglesby, Herold, and Laverick book.

               

              But in general,

               

              You start with assessment looking at CPU, Network, Disk, and Memory utilization of the physical systems. Then look at the application suite on the machines, should they be split apart. This is a good time to consider 1 application per 1 VM. Is it better to reinstall or to P2V. That is always a good question. This could be a great time to fix any issues with the physical machines, etc.....

               

              Then choose your brand of ESX, minimally something w/HA is my normal suggestion but Enterprise has quite a few very nice and useful features.... vMotion, SVMotion, DRS, EVC, etc.

               

              Then choose your hardware, minimally 6 pNICS + 2 controllers for your chosen storage whether iSCSI, SAN, or NFS, Memory and CPUs based on your previously determined numbers.

               

              Then install VMware ESX properly, it is easy to mess up this step.

               

              Then do your migrations, installs, etc.

               

              But it does not end there.... Welcome to the virtualized world.

               


              Best regards,

              Edward L. Haletky

              VMware Communities User Moderator

              ====

              Author of the book 'VMWare ESX Server in the Enterprise: Planning and Securing Virtualization Servers', Copyright 2008 Pearson Education.

              CIO Virtualization Blog: http://www.cio.com/blog/index/topic/168354

              As well as the Virtualization Wiki at http://www.astroarch.com/wiki/index.php/Virtualization

              • 4. Re: Non-virtulazation to Virtulazation consolidation
                Leafy911 Expert

                I'm currently reading the Oglesby, Herold, and Laverick book - "Advanced Technical Design Guide and Advanced Operations Guide" (ISBN 978-09711510-8-6) which should cover everything you need. The other book mentioned VMware ESX Server in the Enterprise: Planning and Securing Virtualization Servers is by Edward L. Haletky (ISBN-10: 0-13-230207-1) which is slightly older but I found discusses some issues I did not find in the previously mentioned book. Treat yourself, buy both of them 

                • 5. Re: Non-virtulazation to Virtulazation consolidation
                  vmmadhu Novice

                  Hi ,

                   

                  Thanks for giving the answer, i need some more help on server sizing , i have old server ie

                   

                   

                  PE 4300 450Mhz 2 GB RAM,  Peak Hour the CPU 40% and Memory 70%

                   

                   

                  Sunfire V440,  1500 MHz , 4 GB RAM OS- Solaris

                   

                   

                  DELL PE2850 - Xeon  4 GB RAM  Peak Hours the CPU 35% and Memory 40% OS- Win2k

                   

                   

                  DELL GX620 ,  512 MB RAM  Peak hour the CPU 20%  and Memory 50% OS -Win2k3 Ent

                   

                   

                  DELL GX 620 , 512 MB RAM Peak Hour the CPU 20% and Memory 60% OS - Win2k

                   

                   

                  out of the above server which server is good for virtulazation server and how many vms can be host on it and with optimized performance, I tried the the vmware capacity planner but i couldn;t understanad properly, could you give some suggesstion or tools which will be help to me calculate properway.

                   

                   

                  Thanks

                  • 6. Re: Non-virtulazation to Virtulazation consolidation
                    Leafy911 Expert

                    Only systems in the ESX 3.5 hardware compatibility guide are supported by VMware. Based on this the only supported h/w you have is the DELL 2850. Another assumption is that the processors are around the 3GHz mark in which case you should be able to get around 4 VM's per core e.g for a 2 proc dual core box you should in theory be able to host 8 VMs. This all depends on how much memory installed, size of your storage (local or central), network cards installed, utilisation of the VMs your going to install (I assumed light to medium for the estimate).

                    • 7. Re: Non-virtulazation to Virtulazation consolidation
                      Texiwill Guru
                      vExpertUser Moderators

                      Hello,

                       

                      The theoretical maximum in 8 VMs per Core. However, 1 COre will belong to the hyper visor and SC, so you limits are really based on having 1 less core than physically in the server. The goal is to have no more than 80% (empirical evidence) of your system utilized in CPU, network, and disk at any given time. This allows for spikes and new VMs to be added.

                       

                      Note that I have seen the theoretical maximums reached but they were all low utilization systems.  CPU will not be your issue if you have quad cores, however Memory and IO will be your limits. You really do not want to overcommit memory. So if your system has 16GBs of memory, assuming 1GB set aside for the hypervisor and SC, that leaves 15 1GB VMs (well below the theoretical maximum), 30 (512MBVMs) etc. Yes you can place more on the system based on Transparent Page Sharing and Memory Ballooning concepts so these are just general rules.

                       

                      You need to plan your VM sizes carefully, give out resources within eye-dropper or start with high limits and drop down once you realize what the real utilization is in each system. DBs generally will use as much memory as you give them, so you need to look within the system for more help on this.

                       


                      Best regards,

                      Edward L. Haletky

                      VMware Communities User Moderator

                      ====

                      Author of the book 'VMWare ESX Server in the Enterprise: Planning and Securing Virtualization Servers', Copyright 2008 Pearson Education.

                      CIO Virtualization Blog: http://www.cio.com/blog/index/topic/168354

                      As well as the Virtualization Wiki at http://www.astroarch.com/wiki/index.php/Virtualization

                      • 8. Re: Non-virtulazation to Virtulazation consolidation
                        vmmadhu Novice

                         

                        Hi ,

                         

                         

                        Is it possible to  install any applications on core ESX server not on the VM's , if so what kind application can be installed.

                         

                         

                        Thanks

                         

                         

                        • 9. Re: Non-virtulazation to Virtulazation consolidation
                          Leafy911 Expert

                           

                          An ESX server is essentially a reduced installation of Redhat Linux, as such you can install applications directly on it. This is strongely NOT recommended as the service console has been optimised by VMware to be as light as possible so that it does not take resources away from running VMs. You can get backup agents, monitoring tools, etc but it is again not recommended.

                           

                           

                           

                          Regards

                           

                          Leafy911

                          • 10. Re: Non-virtulazation to Virtulazation consolidation
                            vmmadhu Novice

                             

                            Hi,

                             

                            Thanks for giving suggestions.

                             

                             

                            Thanks