SSD as Cache host or Virtual Machine Swap or both file?

Similar Questions

• Cache host / location of the Swap file

  I thought to move the files to a local SSD disk swap. My hosts are not really short memory, that I was just trying to save space on the SAN by moving Exchange out of the data store files. Is there a place any allowing the host Cache option if I move to the local SSD disk swap files?

  Evening,

  A few points to consider:

  When you say that the swap files do you have the virtual machine swap or Exchange against guests.  I would advise against the local Exchange against guests being on ssd for reasons HA.

  If you mean that the virtual machine swap file, this file is created when the virtual machine is running and is the size of the virtual memory of the virtual machine - any booking.  Put this file on ssd local has two benefits:

  1. swap because of the speed speed local ssd

  2. do not store your san (a requirement of your original question)

  Now, please keep in mind that this file is only used during the excessive demands of memory operations.  So, if you have zero on commit on the memory, they will never be used #1 do not really have an advantage.  If you find yourself with free' place san ing.  If it is essential for you, then of course do and by all means turn the swap feature to the host cache.  (Good article on it here http://www.yellow-bricks.com/2011/08/18/swap-to-host-cache-aka-swap-to-ssd/)  If you have ssd and you want to see the performance of your SSD where no more if hire you may just want to wait for 5.5 and use vSphere Flash Read Cache (article here that & #8217; s new in vSphere 5.5 storage |) VMware vSphere Blog - VMware Blogs)

  Please let me know if that answers your question.

  Thank you

  Joseph

• I need a new Image of XP because my expired original but when I downloaded it again, the new XP said its has expired, too! I thougt of caching problem of virtual machine manager, but I'm not sure.

  VHD expired

  http://t.co/exzliimb - where I downloaded the XP VHD of

  http://t.co/8vhbKuzu - error screenshot

  I need a new Image of XP because my expired original but when I downloaded it again, the new XP said its has expired, too! I thougt of caching problem of virtual machine manager, but I'm not sure. I deleted all the VHDs before you download again. Any ideas?

  Hello

  Your Windows XP question is more complex than what is generally answered in the Microsoft Answers forums. It is better suited for the IT Pro TechNet public. Please post your question in the Technet Forum. You can follow the link to your question:

  http://social.technet.Microsoft.com/forums/en-us/w7itprovirt/threads

  Hope this information helps.

• Difference between the hosts and virtual machines

  Happy new year!

  I guess that's a stupid question, but I don't know the answer to it.

  I created pools from VM. Some jobs in the pool are hosts and some virtual machines. What is the difference between the hosts and virtual machines. I thought I could only create virtual machines, but I guess I could create hosts as well. -What happened?

  Thanks for your help.

  where does say desktops are hosts?  A host is usually referring to an ESXi server.  A virtual machine is just the guest OS running on the host computer.  A pool is a group of VMs that can extend over several hosts.

  Gunnar

• Question about the location of a host of virtual machines

  I work on temporarily to change the behavior of the DRS for a particular VM (in VI Perl), but my question is more general research of the root 'to host' for a particular virtual machine.

  The installation of the infrastructure program:

  + Folder1

  - + Cluster1

  -

  ---

  + Esx1

  -

  ---

  + VMs

  -

  ---

  + Esx2

  -

  ---

  + VMs

  .. .etc

  There are several clusters on different servers in this configuration.

  In order to manage the DRS by VM, I find the cluster that hosts the virtual machine.  The $vm_view - & gt; parent returns one 'value' (other than the name of folder) folder.  It seems that the only way to match the virtual machine to the cluster of accommodation is to do a brute force search, open multiple views and retrieve the values of each until I have a match, and then looking through each cluster in the corresponding folder to find the one that contains the virtual machine.

  Am I wrong?  It is an ugly and ineffective way to find the host for a virtual machine.  If I am not mistaken, are there plans for the addition of the hierarchy of the path to the view of the VM?

  A $view - & gt; config - & gt; value of path containing something like: file - & gt; Cluster - & gt; ESX Server - & gt; VM would be useful.  In addition, a function which maps values of resources to names of resources would be very helpful (with a code depend on a 'value' of the 'field-c125"and any other code that depends on a 'name' of"Cluster1"creates a lot of extra work).

  Thank you

  -David

  You can determine the Cluster that host a virtual machine by browsing through the ResourcePool of the virtual machine. Owner of the ResourcePool is the ClusterComputeResource who manages the virtual machine.

  $vm_view-> resourcePool->owner

  Also, to get the HostSystem that contains the Virtual Machine, you can follow the path

  $vm_view-> run-> home

  Regarding your suggestion to have a predefined path to access a managed entities, we have after explanation.  There are different paths through which you can access to the different managed

  entities of your inventory according to its hierarchy. Virtual Infrastructure gives you the flexibility to design your inventory. You can add a folder or host or a Cluster directly to your data center.

  Then it still allows a folder to have three objects as its child entity. If the path for any entity depends on the structure of your inventory. If a path can be set.

  All managed objects are uniquely identified managed objects ID. Name can be dupilcate for few entities in a data center, you can have two Resourcepools with the same name in different groups. Similarly, you can even named so that each entity is mapped using an object ID, and not a property 'name '.

• Cannot create a virtual machine with a vmdk file copied from another location, please find the attached error

  Hi all

  I copied a file from one place vmdk and try to make a new virtual machine with this vmdk file. But when I turn on after the creation of vm error is coming. Error in the text and the image below

  Power on the virtual machine: cannot open scsi0:0 disc: disc not supported or not valid type 7. Ensure that the disk has been imported.

  See the error of the stack for more details on the cause of this problem.

  Time: 31/03/2015-14:40:05

  Target: DBServer

  vCenter Server: vcsa

  Error stack

  An error was received from the ESX host turning on DBServer VM.

  Unable to start the virtual machine.

  Power DevicePowerOn module has failed.

  Unable to create the virtual SCSI device for scsi0:0, ' / vmfs/volumes/543d140b-feb33d52-7640-90b11c9796c3/vmdk/kapuatdb.vmdk'

  Could not open scsi0:0 disc: disc not supported or not valid type 7. Ensure that the disk has been imported.

  This error message generally if the hard files have been copied hosted as VMware Workstation product, which uses a format of sparse file that is not supported on an ESXi host. Instead of the hard copy, you can use VMware Converter, or - if you prefer - you can convert the hard using vmware-vdiskmanager (before transfer) or vmkfstools (after downloading). I deal to use vmkfstools you will need to load the mutliextent module (see for example "Clone or migration operations involving virtual discs non-VMFS on ESXi fail with an error" vSphere 5.1 Release Notes)

  André

• Can not power on virtual machines "cannot access the file because it is locked.

  Virtual machines have been working well - then the storage system is down.  After the storage system returns upwards that I can't turn on a number of virtual machines.  Get this error when I try to turn it on:

  Cannot power on vmname on esxhostname.xxxxx.com. Unable to access file < unspecified file name > because it is locked
  error

  1. To check the locks on the Service Console on non ESXi servers, run the command:

     lsof | grep

     COMMAND PID USER FD TYPE SIZE NŒUD NOM_PERIPHERIQUE
     71fd60b6-3631 root 4r REG 0.9 10737418240 23533

     Note: If there is no Console of Service process the locking file, you should receive no printed output. If you receive results, however, file a support request to identify the process and to determine the causes.  If it is a third-party process, however, contact the appropriate provider to determine the cause before you kill the process ID, because it can happen again in the future.

     Stop the process and the lock ID using the kill command. In the example above, the process ID is 3631:

     kill the 3631

     After the termination of the process, you can try to turn on the virtual machine or access the file resource.

  2. To check if the virtual machine is always a world ID assigned, run these commands on all ESX/ESXi hosts:

     CD/tmp
     VM-support - x

     Available to debug worlds:
     WID =

     On the ESX/ESXi host where the virtual machine still works, kill the VM, which releases the lock on the file. To kill the virtual machine, run the command:

     VM-support - X

     Where the is the ID of the world of the virtual machine with the locked file.

     Note: this command takes 5-10 minutes to complete. Answer No to "can I include a screenshot of the virtual machine", and answer Yes to all subsequent questions.

     After the termination of the process, you can turn on the virtual machine or access the file resource.

  Deleting the file .lck (NFS only)

  The virtual machine files can be locked via NFS storage. You can identify this as reported by .lck files. # (where # is the ID of the world that holds the lock file) at the end of the file name. It is a NFS file lock and appears only when you use the ls command as it is the hidden file.
  Beware: they can be removed safely only if the virtual machine is not running.

  Note: VMFS volumes have no .lck files. The locking mechanism for VMFS volumes is managed within VMFS metadata on the volume.

  You must kill the process that is locked, if it is not the case, you probably need to restart the VMware host.
  I tell you from experience most likely end up rebooting it.

• How to list virtual machines with associated vmdk files

  Hello.

  I have a folder vmfs and file vmdk with names that aren't like any virtual machine name (probably because that rename the virtual computer name).

  How can I find what VM is?

  Thank you

  Hello, biokovo-

  You can use the standard Get - VM and hard to find names of VMDK VMs-associated cmdlets Get-disc.  Or another, much more quickly elsewhere, would be to use everyone's favorite: Get-View.

  Since you know the path of the data store for the VMDK, you can check the property LayoutEx of virtual machines to find the virtual machine that said the file property with the name of the value as the games way to store data, as:

  $strVmdkDatastorePath = "[mydatastore] somefolder/somefile.vmdk"Get-View -ViewType VirtualMachine -Property Name,LayoutEx.File | ?{$_.LayoutEx.File | ?{$_.Name -eq $strVmdkDatastorePath}} | select name
  

  Where the path of the data store's format, "[datastoreName] folder/somefile.vmdk.  Yes, including the square brackets around the name of the data store and a space after the "]" (before the first character of the name of the folder).

  How does do for you?  (must be straight fast)

• How to install an operating system on a virtual machine using the ISO file?

  Hello

  I use vmware workstation version 6. I have different kinds of opersting systems likeFedora, Ubuntu, Windows xp CD to install on my virtual machines using the CD-ROM drive.  . I want to know is possible to install a virtual machine via an ISO file?

  Thank you

  mypass

  Yes

  Click on "Menu" > "new" > "virtual machine".

  Click on "Customize."

  Select "next".

  Select "install-disk (iso)".

  Click 'Browse '.

  the rest is explained

  _________________________

  VMX-settings- WS FAQ -[MOAcd | http://sanbarrow.com/moa241.html]- VMDK-manual

• Script to collect some statistics on hosts and virtual machines

  I'm trying to accomplish to get the following statistics, put into a script.

  When I run this script, it must be run by "vcenter" and result the following items.

  The cluster name / number of hosts / number of computers models and virtual / assigned the total memory of all the virtual machines on the cluster (not what is actually to be in use)

  Thus, for example, in the XYZ group with 4 guests, if I have 20 MV that I have 4 GB of RAM for each virtual machine, the output should be 80 GB

  XYZ 4 20 80 GB

  I suspect that you forgot the Select at the end in order to recover the amount.

  @{N = 'CPU'; E = {}

  Notice-EEG-Id (Get-View-Id $_.) ExtensionData.Host - VM property | %{$_. VM}) - property 'Config.Hardware.NumCPU ' |

  %{$_. Config.Hardware.NumCPU} | Measure-object-sum |  Select - ExpandProperty sum}},

• go esxi hosts and virtual machines in one vCenter to another

  I built a new vCenter (Windows vCenter), I intend to move on ESXi hosts the old vCenter (Virtual appliance vCenter) to the new vCenter. I don't know if it's feasible, please notify my step is correct or not: 1) build a new vcenter 2) create a cluster with two esxi hosts first 3) Mount data (NetApp Filer Storage) to the new vCenter warehouses 4) add an empty host for the new vCenter VMs) 5 download then upload to the host in new vcenter

  Hi friend

  Its doable without any problem.

  Please follow the procedure below.

  1 build a new vCenter (your first step is correct)

  2 creating a cluster (because it is new vCenter there will not be any available host.) That is why cluster creation wizard will not get to add in the new cluster host). While initially empty cluster would be created.

  3. once the cluster is created, immediately do a right-click on the cluster and add your hosts one by one. Not necessary to cancel the registration and the VM. Virtual machines will automatically be added who were there on the data store available with all guests.

  Don't forget,

  1. we do not mount any store data in vCenter, we assemble the data store on the host.

  2. If you mount the new data store (which did not exist before), you can mount once the new hosts are added to the new cluster. (Your SAN admin help)

  3. If you want to move your virtual machines from data store before the newly added/mounted data store, please SVMotion these virtual machines (by right-clicking on the VM > migrate > data store > select the data store that is new)... Please follow the same procedure for all virtual machines.

  4. you don't need to add empty hosts to the new cluster, add just as soon as all guests without you register VMs. Later, you can migrate to other store of data according to the requirement. NO need to download or download the VM.

  5. Please make sure that your ESXi hosts will be compatible with the new vCenter. Old version of ESXi always compatible with the new version of vCenter. Just check if you have all valid licenses.

  Please let me know if you need any clarification

• ESXi 5.5u1 - serial number physical host in virtual machine

  I was happy to see in 5.5 update 1 release notes that it should be possible to switch the serial number of the host through a virtual machine hardware.

  • Allow virtual machines to display the serial number of the physical host
    Virtual machines cannot reflect the physical hosts ESXi serial numbers.
    • This issue is fixed in this version.

  Does anyone know how to enable this for a new or existing virtual computer?

  I had problems in the past with Apple Push Notification Services expects a Mac serial number. I hope that I can now spend series a Mac Pro to the host through a virtual machine.

  Someone at - it experience or knowledge to implement this? Thank you!

  Hi DJLambertand welcome to the VMware communities!

  If you want a prompt of OS X to use the serial number of the host, you will need to add this option to the virtual machine configuration:

  serialNumber.reflectHost = 'TRUE '.

  or, if you want a prompt of OS X to use the model of host hardware ID (learn "MacPro5, 1"), ID (i.e. "Mac-12345678" ") and the serial number all all aboard:

  smbios.reflectHost = 'TRUE '.

  will take care of all three.  Note that there is no way to understand or control what happens if you have multiple virtual machines with the same serial number and using this external serial number as an identifier.

  Let us know if you have problems with these options!  I'm not sure whether they will solve the problem you face, but... For example, there are more problems iMessage running in a virtual machine...

  See you soon,.

  --

  Darius

• You can enable CDP on a host with virtual machines running?

  I want to activate CDP on my 3 hosts vShpere 4.1. Each host has about 20 guests on this subject. If I activate CDP via putty will affect the network connectivity of the virtual machines running on the vSwitch? Can I move all the VMS hospitality first?

  Hi Letstub,

  There is no need to evacuate your virtual machines from the vSwitch. Enable or disable CDP has no impact on the communications of the network of virtual machines. The following article that explains how to enable CDP mentions this prerequisite:

  • http://KB.VMware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=1003885

  Good luck.

  Concerning

  Franck

• Attempt vSwitch configuration change and now the ESXi host and virtual machines offline

  So I have no doubt, I have myself to blame for this one. I was trying to change my vSwitch from 100 Mbps to 1000 Mbps when an 'operation timed' error out jumps-to the top and my vCenter Server lost connection with my ESXi host. I tried to restart the host manually, but that did not help. The host is not the ping requests and all the virtual machines on that host are offline; None of them vMotion off to my other ESX Server.

  I tried to reconnect the host computer in vCenter, but it is obviously does not connect because it can't ping it. I logged the ESXi console and all the network settings appear to be correct. I'm used to connect to the ESX console where you can execute commands, but it's my first ESXi host, so I don't know what I can do.

  Any help is greatly appreciated!

  -D.

  If you had your management port and VMs on different vSwitches / NIC leave on framework would eliminate a false positive. As in your case the management port reportedly follows the cable / about speed, but the virtual machine network would be intact (and I'm assuming that your storage space as well).  In this case the VMs system would have worked very well even if the management port did not work.

  Dave

  VMware communities user moderator

  Now available - vSphere Quick Start Guide

  You have a system or a PCI with VMDirectPath?  Submit your specifications to Officieux VMDirectPath HCL.

• retrieve the VM from a dead host (see virtual machine running)

  Hi, I added a new host for my cluster with 3 guests and migrate a virtual computer to new host without any problems, this isn't a VM FT, all of a sudden showed host vCenter disconencted, but VM has increased and runing.

  I managed to RDP to VM for some time, but little VM latter also dead in the water. I have connected to the ESX console he showed a repetitive msg like 'sd0, 0, 0, 0 retry after 360 etc etc.

  So we decided to restart (force) the ESX, VM shows disconencted and ongoing run, I had an another VM in this host but did not work, I managed to remove the other VM inventry and don't add to inventry no problem there, it's now at another host.

  But my problem is with the one who was running when ESX descended, it is yet to see the runnibg but disconencted, I can't delete inventry, but if I navigate to the data store can I add to inventroy, but I hant done this yet.

  Any advice will be appreciated.

  Concerning

  Roy

  (1) try run below console command service, or remotely via putty on running the VM ESX host:

  $service mgmt-vmware restart

  $service vmware-vpxa restart

  (2) if not,.

  $vmware - cmd-l (check the virtual machine registered under the correct ESX host)

  $vmware - cmd /vmfs/volumes/.../.vmx getstate (check whether or not the virtual computer is running)

  $vmware - cmd /vmfs/volumes/.../.vmx stop hard (hard, stop the virtual machine and then try to restart back your VM)

  vcbMC - 1.0.6 Beta

  Lite vcbMC - 1.0.7

  http://www.no-x.org