We have recently confirmed a critical issue related to VMware virtual machine backups on all VMware Workstation and some VMware ESXi backup sets, which occurs when the guest VM is created with the VMDK file that are split into individual 2GB VMDK files.

Due to this bug, AhsayOBM is unable to fully retrieve the correct number of 2GB VMDK files for the guest VM, which causes the backup job to miss some of these 2GB or 20 VMDK files. Even though AhsayOBM reports the backup job is successful the guest VM is no longer recoverable.

• AhsayOBM v7.3.0.0 to v7.17.129
• AhsayOBM v8.1.0.24 to 8.3.6.125

• VMware Workstation 10.x, 11.x, 12.x, 14.x, 15.x, and 16.x
• VMware ESXi 5.0

• To verify if the guest VM in your backup set is affected by this issue. Please check the guests VMs for the presence of multiple VMDK files, with file size around 2GB on the VMware host, as highlighted in the following example

Partners are strongly advised to immediately:

1. Upgrade all affected clients to AhsayOBM v8.5.0.63 or above.
2. After upgrading to AhsayOBM v8.5.0.63 or above, the subsequent backup job will automatically upload the missing 2GB VMDK files for the affected guest VMs. This will allow the affected guest VMs to be recoverable from this point onward.

If your current version is not AhsayCBS v8.5.0.63 or above, then upgrade your AhsayCBS to the latest version first. Please refer to these KB articles for upgrade instructions:

• Windows/Linux/FreeBSD
• AhsayUBS

Stop! Do not upgrade until you contact a member our Sales team sales-kb@ahsay.com for assistance with your maintenance renewal.

Our professional service team is ready to provide immediate assistance to partners with AhsayCBS v8 upgrades.

Please contact a member our Sales team sales-kb@ahsay.com to obtain a quotation for the AhsayCBS upgrade service.