Design of cluster question

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• Design of cluster

  Our company through an analysis of Virtual Infrastructure and design. Consultants keeps referring to the "best present practices of 8 eight hosts per cluster maximum.»

  I did some research and found that vSphere supports up to 32 hosts per cluster.

  Any who have seen limited to 8 guests

  Well, it's somewhat a trick question. While I do not think that you will find everything what best practice is 8 hosts per cluster, there may be a reason to set a strict limit on 8 depending on your environment. For vSphere the maximum limit is 32 hosts per cluster, however something more of 8 guests reduced the number of virtual machines supported by the host from 100 to 40 (see the document of maximum rates of configuration following for more information: http://www.vmware.com/pdf/vsphere4/r40/vsp_40_config_max.pdf). If you do not expect to have more than 40 VMs per host you can use larger clusters.

• Design of 7K question

  I have a single 7009 with double Sup - 2 running 6.1 (3) for a replacement of the base, the modules include a N7K-M148GT - 11 L and two modules N7K-F248XP-25. I'm looking to create several committees and will finally connect my DR via OTV site using the card of the M1.

  My question (s) is / are, how you attach the M1 card back in the VDC if maps M1 and F2 are not compatible in the same VDC? It seems a bit pointless to do not be able to access my copper ports in a VDC. Even if I place a VDC for just the M1 card, do I need an external device to connect to other ports CDV F2 or can I use a VRF to achieve internal linking?

  Any suggestion would be useful and thanks!

  Dave

  As Andras mentioned that you need to separate the M1 and F2 in two different VDC

  If you want to deploy OVT, you will need a third VDC for the OVT using the recommended device OVT design

  see the third example the below document I posted before CSC

  https://supportforums.Cisco.com/docs/doc-27427

  Remember that you must have a good traffic engineering link L2/L3 good ability of planing in a topology of this kind and try to keep things simple as three CDV topology is quite complex!

  HTH

• What factor or things should be consider in Composite SOA design for Cluster environment

  Hello

  I have to develop SOA Composite that must be deployed in the Cluster environment, but I don't know what are the important things, should be considered before and during the creation of composite SOA SOA suite. For example a specific model design property or some plan JCA ports or confg properties or or etc...

  Do I have to look at (take care) if I'm the composite design of soa in a cluster environment.

  Thank you

  All the work is already done for you by Oracle.

  The only rule you need to follow is a common one for clusters: do not keep the (local) State. If you need save some State uses a shared storage (database, distributed cache, distributed file system distributed HTTP session - when it is configured as).

  Vlad

  http://genericparallel.com

• Virtualize SQL Cluster - questions

  We want to consolidate and improve our infrastructure SQL.

  We have dedicated two ESX (VI 3.5, update 3) boxes (IBM 3850 M2 - 4 x 4-core @ 2.13 Ghz - 128G of ram).

  We are planing using Microsoft Clustering with a knot on each ESX Server.

  We also use several levels: production, pre-production, development, and test (in dedicated virtual machines) in the 2005 version of SQL or SQL 2008.

  This means that we will have 8 VMs on each server: 4 SQL 2005 machines virtual (one for each level) and 4 in SQL 2008 (also for each level). We want to use a MS (for each instance) with the other ESX Server cluster.

  We also want to install an additional VM for Reporting Services.

  We use versions of Windows 2003 and SQL, x 64 editions company.

  Here are a few questions:

  • We devote 16G of RAM for each active node. Of course, the passive node must be configured as active. This means that the passive virtual machine should also have 16G of RAM. Also we need to dedicate memory since this virtual machine will be pasive mode and not used unless the cluster switch?

  • If the answer is Yes, this means that we will actually use 32 G of ram for each level. With 4 levels and 2 versions of SQL, we devote 32 x 8 = 256 G of ram.

  • Unless I'm not understanding correctly how the memory works in ESX, I'm out of memory for the virtual machine Reporting Services (and all the needs of furture)

  • Knowing that the Windows swap file is 1.5 times the amount of RAM, this means that a VM with 16G needs to have a pagefile of 24G

  • We need to have 24G of swap file already knowing the virtual machine have an own swip file?

  • Knowing the volume of crude OIL are recommended for SQL, is there any issue with several GROSS volumes in a single ESX box? (We want to use 4 GROSS volumes by level (MSTDC, Quorum, journals and databases. That means 16 volumes GROSS)

  Your help is appreciated.

  Sébastien

  • * If the answer is Yes, this means that we will actually use 32 G of ram for each level. With 4 levels and 2 versions of SQL, we devote 32 x 8 = 256 G of ram.

  • Unless I'm not understanding correctly how the memory works in ESX, I'm out of memory for the virtual machine Reporting Services (and all the needs of furture)

  You are planning to book memory?  I don't think this is necessary.  If you use 2 ESXi servers for a battery of SQL servers, you can simply allocate memory, and you should be fine using actions.  If you are short of memory, I want to begin to see how you share memory, are these machines in the same pool of resources?

  Knowing that the Windows swap file is 1.5 times the amount of RAM, this means that a VM with 16G needs to have a pagefile of 24G

  In fact, the pagefile is not a formula, it is dynamic.  I hope that you run Windows 2003 for these VM SQL if if just use automatic paging size, because you can't handle memory better than Windows, and you would be guessing how much swap is needed.  In addition, swap does not mean additional memory some processes such as nucleus and Exchange DLL regardless of the amount of RAM that is available there.  SQL rarely use memory swap, so available RAM is more essential, then by defining a finite number of 1.5 available RAM, you could be on the award or the RAM of hunger for SQL.  Use the settings of AWE in SQL and let it manage memory and the value of the minimum RAM you need.

  • We need to have 24G of swap file already knowing the virtual machine have an own swip file?

  In fact if you reserve memory for a virtual computer, the Exchange is not necessary.  The VM swap file is for memory allocated to the virtual machine, then you will need IF the memory of the VM on the HOST is not exceed if the client needs more RAM.  Widespread.

• CS5 Design Premium license Question

  Hello. I decided to buy CS5 Design Premium (student edition), but had a few questions that I need to know before I complete the purchase. The questions are:

  1 how many computers can I install it on?

  2. what happens if I install the software on my computer and it is destroyed/ruined some how. Am I out of luck?

  3. I think of upgrading my Dell laptop to a MacBook Pro in a few months and I was wondering is it possible to switch the software.

  Thank you!

  Hi Cory, these articles should be useful in answering all your questions

  • What are the limits of teacher editions & Adobe?
  • How many computers you can install or run Adobe software on?
  • How to transfer Adobe software between computers, or from PC to Mac

  I hope this helps!

• DESIGN OF CLUSTER CUCM

  Hi team,

  I met the following requirement but has no gat delete all documents. My requirement is: a CUCM Cluster should have variour MCS Server model with the same software.

  My request is that I can build a Cluster of CUCM 8.0 which includes MCS 7845, MCS7835 & MCS7825.

  Please share me the link that contains related information.

  Appreciate your kind cooperation.

  Kind regards

  Nirmal

  Hi nirmal

  Technically CUCM clustering can be done using the same software and different hardware

  However this is not a recommended solution as material different can support a different amount of records and call control and this could lead to issues with large implementations due to the incompatibility of hardware

  Hope this helps

  If useful rates

• VCS Cluster question

  Hey all,.

  We have two VCS highways in a cluster.  A VCS is on a tour of the Internet and the other is on a circuit separate from another provider.  The Internet provider for one sucks VCS for video, its only necessary as a backup circuit.  I put this VCS in maintenance mode until the circuit feeding the other VCS fails?  In this way, all records are forced to the VCS with the best circuit of the Internet.

  If a VCS is in maintenance mode, will always be synchronized across the cluster?

  Thank you

  Justin Ferello
  Technical Support Specialist
  KBZ, a Cisco authorized dealer
  http://www.KBZ.com
  e/v: [email protected] / * /

  Justin-

  I went forward a sale of our peers CV in maintenance mode earlier today to work around a problem, and it is always on at this point.  Check the page clustering on the mask of the VCS, it shows that the peer is still active.  Having the status of the replication of successful, even up to present any minute.  It seems that everything is going well, but like you if it would be good to hear from someone official.  Even if we force a counterpart basically be in a passive state until get us out maintenance ourselves to become active.  Unlike a cluster of 6 peers where the last two automatically become active when one of the 4 main counterparts breaks down.

• vCenter 5 Cluster Question

  I'm trying to get clarity on this. What are the limits/capabilities between two clusters in the same data center on vCenter 5 > I try essentially under what you can and can not do if you have two separate groups in the same container of data inside of vCenter Center 5. Assume that all hosts are ESXi 5.

  Thank you

  Ed

  Usually a mixed cluster means that you run ESXi hosts with different versions (for example during an upgrade). Usually, this will work since the vCenter Server pushes new FDM to all guests. (see http://frankdenneman.nl/2011/10/fdm-in-mixed-esx-and-vsphere-clusters/)

  vMotion/DRS (live migration) is not possible between Intel and AMD processors (or CPUs that have no common basis of EVC). HA can still operate, because that will not do a live migration but restart the client on another host. However, you can encounter some problems in this case in the OS, which should also recognize the other guest CPU.

  André

• Design of DC question: extension of the L2. A VPLS? OTV? Link?

  Hello to all,

  during a phase of restructuring of 2 data centers (locate 500 m one from the other), we are wondring what allows to extend the L2.

  All devices are 6500 in VSS (except the 2 above which are 4500), no problem on the link to use (it's a campus, I think we have more or less 20 dark FO).

  Red: L3 PtP GUY

  Blue: Link L2

  A solution is in the file sol_one: L3 ptp in North-South (via EIGRP and that's ok), L2 through black fiber in EST-ovest... area extendig the L2 with STP and VTP (!).

  We think about the placement of a couple of N7004 with OTV and then stretch VLAN (sol_two).

  We also use AVPLS, but it seems that it is more difficult to configure (and more expensive).

  Any help is appreciate.

  L.

  I would like to know if you need more assistance in this topic and make sure your rate helpful messages

  Sent by Cisco Support technique iPad App

• CS6 and web Design premium - test questions

  Whenever I click on 'try' it is unable to connect to the page to download. Help!

  You can download a trial here: http://www.adobe.com/cfusion/tdrc/index.cfm?product=designweb_premium&loc=en_us

  Let is know if you can start the download from here.

• Design of a refrigerator

  I'm new to view lab and I am currently working on a project to design a thermoelectric Refrigerator.I am aware on the specifications of the project, but I'd like to design and simulate the prototype first using Labview.I'm not sure of the software must be used in LabView.So anyplease could get out me by choosing the software in Labview to design and get out a Simulation? I attach a draft of design with this Question...

  What do you mean by "software in LabVIEW?

  LabVIEW is a software.  It's a programming language.  It is particularly suitable for contact materials of the real world such as laboratory and maps of data acquisition instruments.

  Maybe you're looking NI LabVIEW Control Design and Simulation Module which is a package that adds simulation features in LabVIEW.

• Drive letter designation problem.

  MS supports and myself work in seeing why I have Vista SP1 install problems.  I just (yesterday) to install a new copy of Vista on my HD with all the upgrades installed except for SP1 and SP2.  I intend to install so that I can get IE9.  Well, MS and I ran into a slight impasse and will pick up again tomorrow with a conference call.

  Question: After our troubleshooting session today, he helps command, I was looking at my computer drive designations.  It's as if someone just took the designation drive letters that I have for each of my 2 discs and only them mixed.  Data and files, etc follows the description that I entered previously fair years through a random drive letter and there is to it.  It seems I have lost no files or data, etc...  Only bad drive letters.  Did someone came across this problem from a bad drive designation letter?  I will address it tomorrow with Ms.  In the meantime, I would like to see if I can understand why SP1 does not load.

  Question: My C drive is correct regarding the description and the drive letter.  Can I be assured that if I managed to say loading SP1 and SP2 and finally IE9, C only would be affected.  I don't want to touch other players given their problem of letter of designation.

  Question: I recently downloaded WLM only against MS.  I noticed that the appearance of it is a little different from the WLM that comes as part of Windows Live Essentials package.  Everyone has noticed that, and what did you decide to use?

  Hello

  This article explains how to troubleshoot problems when you install a service pack for Windows Vista or Windows Server 2008.

  http://support.Microsoft.com/kb/947366

• Quiz in Captivate 9 question

  Hello all! I am fairly new to Captivate and new to the forum, but I need help. I searched and found answers that seem similar to my dilemma, but are not absolutely zero itch. I'll give some advanced warning that, in all likelihood, I miss just something very obvious.

  In my project, I've categorized questions quiz scattered across the course. Questions allow only one attempt, and when the user responds and click on 'submit', the project advances to the next slide using the lead slide in a two-step process. The question I have is when a user goes back to see previously covered material: once the question has been answered and we are NOT yet in review mode (because the Quiz results slide is not until the end of the project), the user cannot advance beyond the quiz slide without using the button 'next' on the PlayBar. Is it possible to build in a button that allows the user to move beyond a slide of already answered questionnaire while not in playback mode, but does not allow a user to inadvertently skip a question?

  Please let me know if I need to clarify everything and thank you very MUCH in advance for your help.

  Not so easy to achieve this, since you are new. The original design of quiz question slides were in order, that you do not allow navigation assumed to the outside of the quiz except sanitation devices. It is important to stay within the scope of quizzes or the attempt at the Quiz level shall be deemed be more when you leave the scope of quiz. In an attempt at the quiz level responses to questions already answered will be frozen.

  Freedom of navigation in the question slides is possible if you choose the option "Submit all", and users will be able to edit the responses even revisiting the question slides. Only when they press the button "submit all the ' responses will be considered completed and frozen.

  Now, this idea is much more akin to the CP9 because the back and next buttons only appear during the review.

  A workaround, perhaps, may be putting a button custom shape on the first slide hidden initially programmed for the rest of the project. It can trigger the go to next slide action. Problem is that the button should appear only when the question is already answered (because you don't want to jump). You can create a variable user for each slide of the question, a Boolean value, which is passed to a default value of 0 to 1 with the success and the last attempt of the shares for each slide in the question. A question slide can have an action on enter: a conditional action that checks the value of the variable user for this slide. If it is 0, the next form button should be hidden, if it is 1, the following form button should be visible and active. Use a common action for this conditional action, with the variable and the next as a settings button.

• Unexpected events of the virtualized Windows Cluster Failover?

  I'm running into a problem where I see the unexpected events of failover on a cluster failover of Server 2008 running on four hosts ESXi 4.1.  ESXi hosts themselves are not grouped.  Each ESXi host running a single Server 2008 VM.  Each virtual machine has the latest version of VMware tools installed.

  The problem is that, once every two days or more, one of the nodes in the Windows cluster release out of the cluster without apparent reason, which triggered a failover event.  So far we have not identified any root cause in any component of our infrastructure (eg. network switches etc.).  The VM guest that always falls out of the cluster during these unexpected failovers joined the cluster after a few minutes or more.  In the event of failure, the virtual machine that injects seems quite good other than the event of failure of the cluster (for example, the virtual machine does not drop even pings).  In addition, it is always a different VM that we see this problem with, it is not always the same.

  Any ideas on what could cause this problem?  The thesis that we have currently is that there could be some problems with the cluster questions missed by Windows during the card NETWORK active/active configuration that we have on the vSwitches on the back-end.  We plan to change that active/passive.  VMware's recommendations one way or another?

  I already read the article below as well as VMware MSCS on vSphere 4.1 guide, but none of them seem to deal specifically with underlying vSwitch configuration.  Any input on that?  Ideas on the thing we should look at?  Thanks for the help!

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1002890

  Ahh, so that's another problem.

  In the guide 4.1 MSCS, 'section, vSphere MSCS Setup Limitations limitation', he States:

  With native multipathing (NMP), clustering is not taken in charge when the strategy of path is set to round robin.

  -KjB