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Duplicate windows vmware1/10/2023 ![]() ![]() A more efficient method is to use linked clones depending on your needs. VM clone creation also takes some time because the system must copy all data from the source VM. Still, the clone consumes the same amount of storage as the source. The cloned VM has no relation to the source VM. linked clonesĪ full clone is an exact copy of a VM the system duplicates the full data - or hard disk - of the VM and creates two identical and independent VMs. The clone VM wizard not only creates full VM clones but also linked clones. ![]() To prevent network conflicts, it's better to use Workstation's VM cloning wizard instead of copying data manually. Choose between the 'I Copied It' or 'I Moved It' option in VMware Workstation. But if you select the I Moved It option, it creates an identical UUID and MAC address, which can potentially cause conflicts on the network, unless you move the VM files rather than copy them. In this case, you should select the I Copied It option because it creates a new UUID and MAC address. In Figure 1, when you power on the VM copy, the system asks whether you've moved or copied the original VM. This can cause problems on your network when you run the original and source VM simultaneously. The issue is it's an exact copy, which means the VM's Universal Unique Identifier (UUID) and MAC address would be identical. In theory, if you copy a VM folder you then have a VM clone. VMs are essentially files within a file system. With a VM snapshot, the original state and new state can't run simultaneously, but a VM clone can. ![]() Or if you plan to test a certain setup, you can copy the original VM and it remains intact and functional. If you build a base VM with Windows or Linux once and plan to reuse it, you can copy it into a new VM for a future project. In case you’re wondering what happens when one of the VMs needs to change the page that it’s sharing with other VMs VMware uses a “Copy on Write” procedure where the memory location would be copied to a private memory location for the VM to write to.There are many reasons to clone a VM. I think it would be quite difficult to reach the equivalent of the example that I provided. If 2GB of the RAM have identical hash values, it’s possible that the host’s memory could be overcommited by 2GB and still not swap. For instance it’s possible that the host in the above example has 4GB of RAM and each VM has 2GB of RAM. This is one of the mechanisms that VMware uses to allow you to over commit the memory. If the pages have an identical hash value as another page, from any virtual machine, the pages are de-duplicated by pointing the virtual machine pages at the same memory location on the physical host.įrom the picture above you can see that VMs have memory pages in the Host’s memory, as you would imagine, but the pages in blue share the same hash value and can then be shared. VMware uses a technique called Transparent Page Sharing, which looks at each of the virtual machines on a host and creates a hash on each of the memory pages. Well as it turns out, VMware does this already, but they call it “Transparent Page Sharing.” I was thinking, “How awesome would it be to dedupe my memory?” Getting more memory out of my servers would be a nice thing. I got over 40% more storage just by having that sweet little feature on. One of the companies I worked for got a Netapp filer and I loved the fact that it would dedupe the data that was sitting on disk.
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