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Backup Failure when Virtual Machine's Disks are converted from VHD to VMDK using 3rd Party Tool - Connect IT Community | Kaseya
<main> <article class="userContent"> <h2 data-id="summary"><strong>SUMMARY</strong></h2> <p>Backup Failure when Virtual Machine's Disks are converted from VHD to VMDK using 3rd Party Tool</p> <h2 data-id="issue"><strong>ISSUE</strong></h2> <p></p> <h3 data-id="purpose">Purpose</h3> <p>Address virtual machine backup failure when the VMs' Disks are converted from VHD/VNDx (Hyper-V) to VMDK (VMware) using a 3<sup>rd</sup> Party Tool.</p> <h3 data-id="description">Description</h3> <p>When converting Virtual Disks from VHD/VHDx (Hyper-V) to VMDK (VMware) using a 3<sup>rd</sup> Party Tool like WinImage, StarWind Free Converter, etc., if you select the converted disk to be of type similar to Thin Provisioned Disk (also referred sometimes by the 3<sup>rd</sup> Party Tool as ‘Sparse Disk’), a Backup error occurs.</p> <p>This type of disk is actually an old type. It was created by VMware for a product VMware Server, which was deprecated in 2010.</p> <h3 data-id="cause">Cause</h3> <p>This deprecated format is not traditionally supported by VMware on ESX Servers and hence, is not something that is backed up using the VDDK APIs.</p> <h3 data-id="resolution">Resolution</h3> <p>There are 2 solutions possible –</p> <ol><li>If the original VHD is still present, convert the disk again using the 3<sup>rd</sup> Party Tool and while converting, but convert it to a Thick Provisioned Type.</li> <li>If the original VHD is not present, do a Storage vMotion of the existing VMDKs and while doing that, select 'Thick Provisioned' as the destination type.</li> </ol><p>All the required steps for both the solutions are outlined in the attachments</p> <p> </p> <h3 data-id="third-party-sources1-http-kb-vmware-com-selfservice-microsites-search-do-language-en-us-cmd-displaykc-externalid-10333702-http-kb-vmware-com-selfservice-microsites-search-do-language-en-us-cmd-displaykc-externalid-1003490">Third-Party Sources<br><br>1. <a rel="nofollow" href="/home/leaving?allowTrusted=1&target=http%3A%2F%2Fkb.vmware.com%2Fselfservice%2Fmicrosites%2Fsearch.do%3Flanguage%3Den_US%26cmd%3DdisplayKC%26externalId%3D1033370">http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1033370<br><br><span style="color: #000000;">2</span></a>. <a rel="nofollow" href="/home/leaving?allowTrusted=1&target=http%3A%2F%2Fkb.vmware.com%2Fselfservice%2Fmicrosites%2Fsearch.do%3Flanguage%3Den_US%26cmd%3DdisplayKC%26externalId%3D1003490">http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1003490</a> </h3> </article> </main>