What is the average size of a snapshot for the size of the virtual machine?

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• What is the virtual machine backdoor?

  I fell on what we call a back door virtual machine by reading the following blog post: http://virtualfoundry.blogspot.com/2009/04/protect-console-virtual-firewall.html

  He says the following:

  While you're there, go ahead and disable the virtual computer is backdoor by adding this directive:

  monitor_control.restrict_backdoor = 'true '.

  What is this backdoor? Should I add this command to all my virtual machines?

  Thank you

  The backdoor is a channel of communication between the client and the hypervisor.  It allows guests to enjoy the hypercalls on the hypervisor.   Despite the scary name, it is not a security issue in and of itself, although there is always the possibility a hypercall implementations allows a kind of safety operating.  The backdoor of VMware is implemented as an operation of e/s to a specific port address.  The games instructions VT - x and AMD - V also provides a hypercall mechanism, but we still use the inheritance mechanism, because it is supported by all of our hypervisors, regardless of the underlying implementation.

  The 'monitor_control.restrict_backdoor' configuration option does not disable the door entirely.  As its name suggests, it restricts the use of the backdoor.  In particular, they only allow the guest to use the backdoor when the IOPL prompt > = his CPL.  In general, this means that the client must be running code monitoring, such as the core OS guest, clocked at CPL 0.  (There are some notable exceptions, such as Linux X server, which takes place in CPL 3 with 3 IOPL.)

  When you run a nested VMs, the backdoor should be limited in the external virtual machine if you want to be able to make the inner virtual machine to the hypervisor inner hypercalls.  Otherwise, hypercalls made the inner virtual machine will be provided by the external hypervisor.  If you don't care to install VMware Tools in the virtual machine internal, you don't have to restrict the backdoor into the external virtual machine.

• Oracle installed on the virtual machine

  Hello world!
  
  In one of the server, Oracle is installed on a virtual machine.
  
  I have to make a change in the way I set up the file settings or something else to improve performance?
  
  What a difference, is to have the Oracle in the area directly compared to what in the virtual machine?
  
  Hope to hear some tips.
  
  Thank you. :)
  
  Nith

  user645399 wrote:
  Hello world!

  In one of the server, Oracle is installed on a virtual machine.

  I have to make a change in the way I set up the file settings or something else to improve performance?

  What a difference, is to have the Oracle in the area directly compared to what in the virtual machine?

  There is no difference running Oracle in a virtualized environment or on a box. For the performance gain, the same number of steps are necessary as normally are required. Read the guide to performance optimization of Oracle doc site corresponding to your version of db http://tahiti.oracle.com.

  HTH
  Aman...

• Question about the size of my Virtual Machine

  I'm on Fusion 3.1 (and Windows XP in Fusion on a MacBookPro Leopard). I put my Windows Virtual Machine to be 40 GB size but I just ran OmniDiskSweeper and it shows that the virtual machine takes 53 GB. I see the same size in the Finder.

  Two questions: first, how is it possible for the virtual machine to limit growth, I gave him? Second, is there a way for me to downsize (safely). I did not quite in the virtual machine (mainly my installation of Windows) and a handful of programs so it's weird that she's so big.

  I have disabled Auto-protect.

  I have two snapshots, one of when I first set up the virtual machine and one of very recently. I once had a bunch of other photos but I deleted them. I mention this because I read in another thread that "orphan" instant can hang out somewhere but I don't know where to look to see if this is the reason for the growth of my virtual machine.

  Thanks a lot for your suggestions.

  Abe Z.

  AMZ1 wrote:

  One thing I didn't get your last answer: if snapshots are not backup, and the creation of a snapshot causes the basic disk that you want to stop growing, which are good for snapshots? Or in other words, your response, it looks like I should stop creating snapshots, Yes?

  In which case I should rely only on periodically manually save the virtual machine by copying in the Finder on an external drive?

  What I said was "Snapshots are not backups in the traditional sense of the word and should not be relied upon as such either." However, using clichés absolutely has merit and value but how to use them effectively and efficiently seems to escape most of the users.  As a general rule, I treat a not different Virtual Machine and a physical Machine, then when it come to back up the user data and the ability to quickly restore the entire construction as well as user data.  I use snapshots mainly for short periods of time, and then either delete them when I don't want to lose changes made along the way, or if I go back to a previous snapshot.  For example, I can run on a given snapshot and say a single snapshot for a week and if all was well I'll delete it and take another or if I need to do something that could end up with bad results I'll take a snapshot to do what I do and if I have a problem just go back to the previous snapshot or the basic disk as appropriate.  The trick is user data constantly backed up out of the Virtual Machine itself, as well as at some point in time I never have to worry about the State of and reason for any data or instant and what action I might have to or want to take.

  There are many other cases workers scenarios about how/when to use snapshots and it was just a bit of food for thought because I don't have time now to get deeper into it but the snapshots are a good thing to use as and when necessary, but do not count on them to replace the traditional methods/methodologies for backup/recovery of data user or any backup/restore system but use then as a another tool in the digital Toolbox.

• How do you change the size of the virtual machine screen?

  Hi all.

  I seem to have a problem when I am trying to expand the screento VM fit the full screen of my monitor. Even when I adjust the chassis, the active display of machine virtual itself remains small. How can I change the screen VM size flexibly?

  I am attaching a picture of screenshot of what I see when I try to set the display of the virtual machine in full-screen.

  Thank you!

  Hi Alicia,.

  Sorry for this mess, it's Ctrl + Alt + entry in work stations, please see below for the shortcuts.

  Keyboard shortcuts for VMware Workstation

  Thank you

• When a snapshot is complete, so I can start to make changes to the virtual machine?

  When I take a snapshot in merge, a progress bar appears in the window of virtual computer, then disappears in a few seconds.

  But a picture of a clock also appears on the Fusion icon in the dock. Only the clock takes a minute or two to disappear.

  What process is the clock?  What is the take a complete snapshot?  When the progress bar disappears, or when the clock disappears?

  Can I safely begin to make changes to the virtual machine, I want to be able to restore, immediately after the progress bar disappears?

  Or, it is more prudent to wait to make changes until the clock disappears?

  Thank you

  (The progress bar and the clock appear in my Fusion 3 that I use always happy... I don't know what appears in more recent versions).

  While the stopwatch turns, Fusion is busy writing the snapshot to disk, so the performance of your comments and your host could be reduced.

  As long as the performance isn't an obstacle, you can continue to use the virtual machine while the snapshot is taken.  Merger will ensure that the snapshot includes the exact state of the virtual machine at the moment, you started the snapshot: nothing of what you are doing inside the guest, while the snapshot is in progress does not affect the State of the socket.

  See you soon,.

  --

  Darius

• How the snapshot of the virtual machine?

  Hi all

  We use the VDI in our Organization. We use Linked clones.

  I have to recompose all pools each week. And to recompose some users will be connected to the virtual machine. So, generally, I select wait for logof users recompose. But some of the virtual machine are not getting laid, even though the disconnection of users due to the task request has expired error. And we manually recomposing machines.

  Is it possible to know the snapshot, used by the virtual machine to the pool in the blink of an eye (i.e. What snapshot it uses if a new or old)

  Otherwise, I have to check with each virtual computer and details of the snap of this virtual machine manually. We have 900 such VMS in my environment.

  Thanks in advance.

  Go to the inventory pool, - 'See composer details' and sort on the column "last image".

• Is reset or restart the virtual machine should all expanding vmdk size?

  Hi all

  While extending the size of 20 to 28 GB GB vmdk I can extend when the VM is in poweron State, but he didn't think inside the virtual machine. The disc is resized when the virtual machine won reset or reboot.  I would like to know if the reset or restart that virtual computer is must have for resizing vmdk. If it is then what is the use of expansion of disk while the VM is in poweron State?

  Thank you

  Vijaya

  Yes with windows 2008, you can extend the OS disk to create a new drive letter instead.

  Here is a tutorial: http://www.petri.co.il/extend-disk-partition-vista-windows-server-2008.htm

• Transport mode "nbdssl" is not available if the virtual machine has no snapshot

  When I use VixDiskLib_ConnectEx with a vmdk having a snapshot, I "nbdssl". If the virtual machine has no snapshot, I've always had "nbd" no matter what I specified in the parameter transportModes of the VixDiskLib_ConnectEx. I tried NULL, "nbdssl". It affects always unconditionally "nbd" when there is no snapshot.

  Is this expected behavior? If so, I am not able to write safely to a vmdk. During a recovery, I create a new vm. However, there is no snapshot. I want to get back to this vmdk.  How to work around this limitation of security?

  You use 1.1?  nbdssl restores are not supported on 1.1.

  -Remy

• Turn off the virtual machine to remove the snapshot?

  I discovered that, even though my Snapshot Manager says that there are no photos, I have several virtual machines with the snapshot files. I tried to create a new snapshot and then remove it, but it does not work. I tried to shut down the VM, and then create a snapshot and remove - that works. What is the difference? Why would it works when the virtual computer is disabled but does not work when the virtual machine is turned on?

  And even if you go to snapmgt you can not delete them?

  Download rvtools tool, there is an instant writer and see if there's trully snaps and might send a screnn for me!

• How to determine the size the virtual machine using the VI SDK files

  VirtualMachineFileLayout a lot of files like snapshots, configuration files, log files. I have not found any object determine the size of them, but the VI Client GUI shows the sizes of them.

  Is there a VI SDK objects that provide the size of every file?

  Thank you

  RAM

  The virtual machine, you can find warehouses of data associated with (ownership of the data store). Each data store, you can find the HostDatastoreBrowser corresponding (the property browser). HostDatastoreBrowser object, you can call SearchDatastore_Task() or SearchDatastoreSubFolders_Task.

  When you call one of the methods, a task object is returned. To the success of the task, check the property info.result of the task, the object of HostDatastoreBrowserSearchResults actual result is there. Discover the FileInfo objects - they include sizes and lately of the modified files.

  Good luck.

  Steve JIN, VMware engineering

  Creator of VI Java API: http://vijava.sf.net/

• What windows key you use to activate one of the virtual machines on my Hyper-V on Windows Server 2012 R2 Std

  I installed my Hyper-V role and now wants to activate one of the virtual machines, but the key is not recognized.  Should what key I use?

  Hello

  Your question is beyond the scope of this community.

  I suggest that repost you in the Forum of Hyper-V on Technet.

  https://social.technet.Microsoft.com/forums/WindowsServer/en-us/home?Forum=winserverhyperv

  Or:

  TechNet Server forums.

  http://social.technet.Microsoft.com/forums/WindowsServer/en-us/home?category=WindowsServer

  See you soon.

• SRM 5.5 - vSphere replication - error: impossible to reverse the replication for the Virtual Machine. A snapshot operation cannot be performed

  Hi all, we have just run a test DR failover of a couple of virtual machines in our protected our failover site and all site swung perfectly, two virtual machines came online and all applications work well. However when we cam to r-eprotect machines virtual, we get some errors.

  One of the virtual machines seems to have lived the reprotect end process, it is still running, but has not moved to 89% for some time. The virtual machine has a couple of grand (a little less than 2 TB) VMDK. slow progress is just a consequence of the large VMDK?

  More worrisome is the virtual machine which don't reprotect at all. It generates an error whenever I click on the "Restore" button (error: impossible to reverse the replication for the Virtual Machine.) A snapshot operation can not be performed).

  
  Does anyone have any ideas as to the cause?

  Thanks in advance for any help.

  Andy

  Finally got to the bottom of this. The issue was that reprotect SRM work was trying to dispel any snapshots that were taken on the computer object virtual destination in VMWare, but could not clean snapshots.

  The reason why snapshots would not consolidate was because it was snapshots of temporary VEEAM who in fact any snapshot file listed in the VSAN data store. So when we looked through the browser data store, no snapshot file existed in the virtual computers folder. Trying a manual removal also failed.

  To fix this, we created a snapshot of the virtual machine in the original data center (note is the engine to the bottom of the virtual machine), this effect was to get rid of the 'fade' snapshot that was visible in the Snapshot Manager that VEEAM backup had left behind. Once this had disappeared, the reprotect back to DCA worked perfectly.

• vRO presentation: return the total size of the disk of the virtual machine

  Hi guys,.

  I have a catalog item to extend a drive, which is presented to the vRA advanced services and picks up the vRO workflow. For this reason, the default IaaS vRA no between not affecting resource management. So I would limit the end-users to a maximum size of the virtual machine - that is to say, if the size + total size they intended to expand is > to a specific size, then the workflow will report this.

  I wrote the following code to return the total of all the disks that are attached to a machine. Then, it comes to the tab Presentation vRO to fill the discs max value. It works fine when I use the code as a workflow and connect the output. However, vRO presentation does not return a value any. Anyone had similar problems or I made a stupid mistake and missed something?

  var total = 0;

  size var = new Array();

  var features = vm.config.hardware.device;

  var h = 0;

  for (var i in devices) {}

  If (devices [i] instanceof VcVirtualDisk) {}

  size [h +] = [i] devices, .capacityInKB / 1024 / 1024;

  Total += devices [i] .capacityInKB / 1024 / 1024;

  }

  }

  return to the total;

  
  

  
  

  
  

  Thank you

  bradger33

  resolved - used the wrong presentation vRO variable. Had to use rather than answer pre-defined data binding

• A suspended snapshot could not be created for the virtual machine (DC) ha-data center (DC) \vm\VMware vCenter Server Appliance.

  Hello gentlemen,

  I can not only save this virtual machine with Backup Exec 2014 for a long time.

  They are there was no snapshot in snapshot Manager.

  Could you help me?

  A suspended snapshot could not be created for the virtual machine (DC) ha-data center (DC) \vm\VMware vCenter Server Appliance.

  V-79-57344-38260 - failed to create a snapshot of the virtual machine. The virtual machine is no longer exist, or may be too busy to pause to take the snap.

  A suspended snapshot could not be created for the virtual machine (DC) ha-data center (DC) \vm\FRPA111PRIM01.

  V-79-57344-38299-\vm\FRPA111PRIM01 ha-data center (DC) VMVCB::\\192.168.204.42\VCGuestVm\ (DC). To try to take a snapshot of a virtual machine failed because it could not be suspended in a file system.

  Hello

  I found the solution.

  I disabled the JOB BE general relativity.

  and the host where the virtual machine belong was not the right time. No Ntp server has been configured.

  I did and now there works.

  I think that the problem can come from this.

• virtual machine cannot start, because the snapshot of the virtual machine has been deleted by mistake.

  virtual machine cannot start, because the snapshot of the virtual machine has been deleted by mistake.

  When I start this virtual machine, it prompts: unable to find the 0001.vmdk, this disc is my shot, has been deleted by mistake.

  How to restore this virtual machine.

  You need help with a revival of the 000001.vmdk deleted or do you want to repair the virtual machine so that it works without the snapshot?

  The last option, follow these steps:
  remove the virtual machine from the inventory and edit the vmx file so that it uses the basedisk. Then add the virtual machine to inventory.
  If you need data from the snapshot call me through Skype "sanbarrow" - I may be able to help