LUN and ESX Server - basic knowledge

Similar Questions

• Difference between vCenter server and ESX server

  Hello

  I'm new to the development of VMware. Can you please explain me how ESX server differs from the VirtualCenter Server?

  According to my knowledge, ESX server is the one on which the real images are created and deployed while VirtualCenter manages ESX (one at a time) servers. ability to manage multiple ESX servers, both 'vSphere' a.

  My understanding is correct. Kindly answer my question.

  ESX (later - ESX4) is a system of bare metal operating that you can install directly on your physical hardware. This is the hypervisor layer that helps you to run multiple virtual machines on a single piece of material. The heart of ESX is the VMkernel which does all the magic (resouce management VM.. .and much). Talk about vCenter (previously Center Virtual Server) is a management application that you can install on a separate physical computer (you can even have a virtual vCenter). Once your vCenter is allowed, you can begin to manage the ESX servers.

  There are two ways to manage ESX. One is that you can directly connect to your ESX Server with root password and manage it. Otherwise, connect the server vCenter, add the ESX Server so that your vCenter it manages.

  vCenter resembles a management station from which you can manage your multiple ESX servers.

• SAN LUN and ESX growing data warehouses

  I know it's more a question of SAN as a matter of VM, but it is also related to the virtual machines.

  I don't know much about the configuration of a San, first. Laughing out loud

  My question is this...

  I have a SAN FAST600 who has a number of derined LUNS which are no longer in use.

  I want to do is blast them away and then grow my VM LUN so I have a great store of VM data.

  My boss told me that we cannot expand a LUN when it has been set, is it true?

  If you are using vSphere/ESX4, you can grow a VMFS after push you your underlying logic unit number.  You couldn't do this before with earlier versions of ESX.

  -KjB

• Question about Lab Manager and ESX Resource Pools

  Hello world

  I was wondering if I can get feedback from some of the members of the community.  We used Lab Manager very strongly in our support organizations and it has proved to be a valuable tool.  Recently, we collaborated with the Department of technical training and started hosting online seminars and classes for them using Lab Manager.  Last week we had a fairly large class of users (approx. 45), each duty deploy 2 rather Beefy VMs that were very intensive resources (Jboss, SQL, Mail to name a few).  My colleague and I went through a lot of trials and planning to ensure that our infrastructure can handle the load while allowing our users to date at the same speed and reliability, so that they are used.

  Our Lab Manager ESX server pools made up of the following:

  5 HP DL380 G5 servers with 2 x Quad Core 2.8 GHZ processors (8 cores each) with 32 GB of RAM each

  2 HP DL580 G5 servers with 4 x Quad Core 2.8 GHZ processors (16 cores each) with 128 GB of RAM each

  When the class is running and everyone has made their 2 machines, we noticed for some reason, he was all on ESX2 and 3 deployment (380 s).  Then came the ESX alarms, use of 90% of memory, then more than 100% bringing the disk page.  The CPU usage was at a all time high.

  I look at the 2 580 s and there are about 4 virtual machines deployed on them.

  So my question is...

  How does he know where to launch a Virtual Lab Manager machine?  There's no sense 2 servers have been brought to the red zone, and almost overloaded when the 2 most powerful servers in my farm are nearly dormant.  I noticed sometimes in the past, but not this bad.  Normally, we have about 45-50 computers deployed at some point and it seems to spread them out properly.

  This group of training has access to the same LUN and ESX server with Betclick as any other organization that we have.

  We have decided hosting several sessions of training may be greater than this one and would like to know that the virtual machines will be distributed properly.

  I would like to know your opinion on this

  First to answer your question, then make guess what happens.

  As indicated in response Ilya, LM distributed VMs differently with active DRS resource pools and pools of resources without active DRS.

  LM place VMs when the DRS is not used.

  When DRS is used, we use the DRS admission control to select the host to place virtual machines.

  DRS is turned off, LM uses its own placement routine:

  For each virtual machine, LM filter all managed servers that cannot run the virtual machine. A complete list of patterns are:

  • The managed server has not enough memory or quota for virtual machine to run the virtual machine.

  • The host is not connected to the data store that is the virtual machine.

  • The virtual machine has active state (suspended) and the CPU of the server managed by the waking state has been captured is not compatible with the managed server currently considered.

  • The virtual machine has been a guest on 64-bit and the managed server is not 64-bit capable.

  • The virtual machine has more processors than the managed server.

  • The managed server is not accessible or is set to "prohibit deployments." Not reachable may mean that the lm-agent or its not to ping queries is not answer (this is visible in the list of managed server page).

  Once we have the complete list of eligible servers, we place the virtual machines on the host including the smallest (MemoryReservation % + CPUReservation %). By default, we reserve not CPU on LM VMs, this internship will be largely due to the memory on the host computers if you have not changed the settings of reservation of CPU on your virtual machines.

  For closed deploy to the PF3, force us all virtual machines to go on the same host, so if any virtual machines have any special data store / CPU type specification, all virtual machines is forced to go on this host. If there are conflicting requirements between different virtual machines in the same configuration, deployment will fail. Closed VMs also have another condition to check that is rarely achieved in practice: number of closed networks available on the managed server. By default, this is 20 and you will need more than 20 different configurations closed running on a managed server before you who will strike.  (LM4 allows Cross fencing host, so this does not apply in LM4).

  To make a guess blind because of your distribution problem - if you use the saved state and fencing, it's probably the type of processor.  Processor type can be checked on the host properties page.

  If you not are not I would check that the images can deploy on the 580 s by disabling the 380s and trying to deploy them.

  If you use DRS (which you're not), it could be due to deployment of virtual machines too fast for the algorithm of control for the entrance of VC.  An easy solution for this is to extinguish the DRS on the cluster manager of laboratory.

  We tested load internal repeatedly, the product QA in different laboratories, we run (LM has been used in VMworld Labs for the past couple years and internal systems of training and demonstration for our Organization implemented SE), so no need to worry about this.  I assure you that the first 'real' performance problem you will encounter will be almost certainly due to an overload of your storage array (too many IOPS / s)... and for that you have to distribute content in data warehouses and use techniques of creating paths to balance the load.

  Kind regards

  Steven

  Another thread on this: http://communities.vmware.com/message/1258902.

• VirtualCenter is necessary to put in place the virtual machine on an ESX Server?

  Hello! I'm new to VMWare and and I'm trying to implement some virtualized servers. I have a machine I want to run a virtual machine with Windows Server 2008 and a virtual machine with Arch Linux. I have a copy of vSphere 4.0 and ESX Server operating system linux installed correctly on the server computer. I tried to use the Infrastructure Client from my desktop Windows 7 Professional to create the new virtual machine, but I get to the part 'Select the data store' in the wizard and shows me that I have not created from data stores. I have not found a way to create databases in client infrastructure, and most things on the internet speak do with VirtualCenter.

  I tried to install the VirtualCenter on Windows 7 server, and initially, I got the error when he could not find the ADAM directory. Then I installed the version of Windows 7 to ADAM, ADLDS, who created c:\Windows\Adam and seemed to be backward compatible enough to allow installation to get a little further, how it failed and said that he was unable to create an instance of directory services.

  I fought this thing and Googling all the problems that I ran now for more than 48 hours. I was hoping that since I don't have more than one physical server to manage, and I don't have a dedicated machine which can be VirtualCenter Server all the time anyway (my office is dualbooted with linux, where I spend most of my time), it would be possible to do without.

  Any help appreciated,

  Matt

  Hi and welcome to the forum,

  you don t need a vCenter if you have a single server. You can use the vSphere Client to manage the server.

  If I understand you, you have already installed the ESX Server and a local data store.

  Now you can download the vSphere Client by opening the Web page of your ESX Server. Type http://<> address >

  Install the Client and you are able to create Virtual Machines.

  You can also use the ESXi Version.

  But I recommend you read some VMware papers like this

  http://www.VMware.com/PDF/vSphere4/r40_u1/vsp_40_u1_esxi_i_get_start.PDF

  Frank

• Disable ctrl + alt + delete on an ESX Server

  Is that what someone wrote a script to edit the inittab file? I want to modify or copy a file in its place to fix a little bug. The ESX Server Service console, if you press CtrlAltDel, it will start a stop of all virtual machines and ESX Server. Being primarily a windows this store a something which is inevitable sooner or later.

  THX,

  Scott

  A patch is released 2010-03-03 to solve the http://www.vmadmin.co.uk/vmware/35-esxserver/193-esxctrlaltdelshutdown problem

  His remarkable in http://kb.vmware.com/kb/1017459

  Andy, BSc (Hons)

  VCP 3/4 / vExpert / MCP / MCTS / TCSP

  Help, Guides and info http://www.VMadmin.co.uk

  If you have found this information useful please give points by using the buttons at the top of the page accordingly.

• Basic knowledge on Essbase Server and Administration Services

  Hello
  
  I'm a newbie to the Essbase. I'm trying to figure out the difference between the server and Services.I got very confused.
  
  Please clarify my understanding
  
  Essbase server - this is a server where Essbase stores all the data.
  
  Essbase Administration Services - it is an agent used to communicate with the Essbase server from the end before (administration Console)
  
  Admin Console - it is a front-end client used to connect to different servers Essbase. It is possible to have Essbase servers to be installed on different computers.
  
  Before connecting to the client management console, we should make sure Server Essbase and Essbase Administration SErvices are running
  
  Thank you
  Arun

  Hello friend
  What ever you say on essbase and EAS server is correct. If you want more explanation on this please take a look on essbase architecture see this link that gives you a better idea

  http://gerardnico.com/wiki/EPM/Essbase/essbase_architecture

  It is not necessary that the server Essbase and EAS are on the same machine.we can add different servers in the Regional service console.

  Regarding your last question (before connecting to the administration console client that we should ensure that Essbase server and Essbase Administration SErvices are up and running)

  Before logon to EA please make sure that this server essbase, openldap and essbase admin services are running

  Thank you
  REDA

• Non-visible LUNs to the second esx Server

  Hi, I have two HP G4p esx 3.5 servers attached to an MSA1000 with a hub via the emulex fibre FCs I had created two LUNS on the MSA with the ACU. One esx server sees the two LUNS created but the other cannot see the LUNS even after doing a rescan. Sometimes when making him analyze again the VI is suspended. I have obsereved both esx servers to see two different WWPN pointing to two different targets. I want both esx servers to see the same LUNS shared so I could run somewhat your since I'm new to vmware technology. I enclose a snapshot that I think could someone out there with the possible workaround to the issue.

  Thank you

  I agree with other posters - make sure your zoning is correct on the FC switch and also ensure that you have checked boxes correct and applied, in the selective presentation of storage (SSP) within the ACU. If this is all OK, a new scan of the storage should display the logical unit number.

  You're talking about the different WWPN is the Emulex HBA on their respective hosts.

  Post edited by: java_cat33 - Note about WWPN

• ESX Server and Dell 2950

  Looking for some advice on the best way to get ESX Server running smooth on a Dell 2950

  6-drive 1 TB SAS - Raid should be configured Raid 0, 5 or 1 + 0 (10)

  Also other tips you can highlight.

  Thank you

  With 6 discs, I don't want to give up half of my storage.  I use RAID5 and exit the storage most of my pins available.  ESX will run smoothly on one of the RAID configs because it does not support RAID, nor she cares.  The difference here is a slight difference in the performance of the R/W between RAID levels.  With a low number of pins, however, this difference will be almost nil and not perceptible to a degree any.  Use RAID5, get most of storage that you can run as many virtual machines.

  In addition, ESX will not recognize size LUNS greater than 2 TB volumes.  Create multiple logical drives in your RAID set to broadcast your I/O as much as possible.  Your VMFS block size will determine how big of a size of disk file or the virtual machine, you can create on this vmfs.  1 MB (default) = 256 GB max, max 2 MB = 512 GB, 4 MB = 1 to 8 MB = 2 TB max.

  -KjB

• Move VMS between server ESXi and vSphere ESX server

  Dear all,

  I want to move some a vSphere ESX server virtual machines to ESXi server.

  I understand that some users will use CPS to move between the ESX servers, but apparently not for moving between different products.

  I'm just using a slow and prone to error method:

  The files of the virtual machine to my deskop PC of vSphere ESX server and then upload to the ESXi server.

  I would advise you to please all of the methods that is better than this one?

  Help, please.

  Kind regards

  Tommy

  If you got a central storage you can move virtual machines between the two products with vMotion. Since you don't seem to have available vMotion, you pouvez use scp. SCP has nothing to do with ESX/ESXi products. It is a Linux/Unix program which is available in both servers.

  So with the CPS, you need a little less.

  The syntax is like:

  SCP - r/path/to/vm/directory user@esxi:/path/to/new/location

  Concerning

• How to put power on and off through CLI command in ESX Server

  Hello

  We are facing a problem with VI Client members in VCenter or individual ESX servers.

  In this case how properly turned off (or) power on virtual machines through CLI command on the ESX Server.

  Any command available for this case.

  Kind regards

  Eric

  On PowerCLI: Take a look at vSphere PowerCLI Administration Guide

  Shutdown-VMGuest and Start-VM cmdlets

  On vSphere RCLI take a look at vmcontrol.pl

• vCenter server and ESX versions

  Hello friends, can you please answer these questions:

  (1) what additional features we get in vCenter server Essentials

  in comparison with vCenter server Standard?

  (2) is it possible to have some ESX servers upgraded to 4.0

  3.5 in our infrastructure and some left at the same old ESX 3.5 level? Do

  they coexist? If they coexist, managing servers ESX 3.5 and ESX 4.0 with

  the same server vCenter 4.0?

  see you soon

  Jdsony5 wrote:

  (2) is it possible to have some ESX servers upgraded to 4.0

  3.5 in our infrastructure and some left at the same old ESX 3.5 level? Do

  they coexist? If they coexist, managing servers ESX 3.5 and ESX 4.0 with

  the same server vCenter 4.0?

  Yes, but you must have a license for 3.5 systems running server. The vSphere vCenter must be configured to point to this license server. One solution is to install this on the server vSphere vCenter and decomission license server when all the ESX servers running 4.x.

  Another option is to keep the old server licenses running and just the new vCenter for that one pint.

  AWo

  VCP 3 & 4

  Author @ vmwire.net

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• USB key contains VMX and VMDK files, I import them to an ESX Server 3.5

  I use VMware Workstation to use these virtual machines, but now I would add these virtual machines from one ESX Server. Each virtual machine is in its own directory on the USB drive and each folder contains files etc, vmxf, vmx, vmdk. What is the best way to get these on a server ESX from external USB drive?

  Or install the stand alone vConverter. It's free and it's the part of the VC you would use anyway. So I just install the vConverter and import your virtual machines to do. After they are imported, you'll need to register virtual machines.

• Customer of ESX server/vi /VC / which can be downloaded and tried for at least a month

  Hello

  Could someone point me to the version of esx server/vi client /VC versions of the server, which can be the trial downloaded and tried. (downlaods section Vmsphere of the trial for 2 months)

  My goal is to run the server as a VM esx in vmware workstation in documents Xtravirt. (I had earlier run esx 3.0 on workstation 6.0.2 with VC 2.0 and 2.5 client Vi)

  If I could get the same versions also problem would be resolved. But it would have been great if I could run each of them on trial versions that I could connect to VC and log in as a user and add another administrator virtual machines.

  Thank you

  I can try the new vSphere suite: ESX4 + VC 4 +...

  André

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• Copy the files/etc/passwd and/etc/Group from your ESX Server to the machine that you want to use as map server

  I'm trying to set up an NFS share on my windows server so that I can do vMotion.  I have 2 ESX servers that will access the storage location so that I can vMotion the content on an ESX Server to the other ESX Server.  I came across many discussion forums who say I need to "copy the files/etc/passwd and/etc/Group for your ESX Server to the machine that you want to use as map server"... How can I copy these files onto my ESX Server?

  I am VERY VERY new to VMware and will need step by step instructions on how to do it.

  Thanks in advance!

  Hello

  Try this http://vmetc.com/2008/02/19/create-a-nfs-share-for-vm-iso-files-with-windows-2003-server-r2/ and this

  http://ITKnowledgeExchange.TechTarget.com/it-consultant/Configuring-NFS-in-Windows/

  To copy the files everywhere I would use WINSCP which based a gui app secure copy, which should make it easy to copy the file into the Windows box

  Concerning