Solutions for Preflight Check Items of VMware VMs

Adding and Managing Source Nodes › How to Manage Nodes › Perform Preflight Checks for Your Backup Jobs › Solutions for Preflight Check Items of VMware VMs

Solutions for Preflight Check Items of VMware VMs

The following tables describe the solutions to help you resolve errors and warnings from your Preflight Check results for VMware VMs:

Changed Block Tracking (CBT)

Status	Message	Solution
Error	Unable to enable changed block tracking.	If the virtual machine does not have hardware version 7 or higher, upgrade the hardware version of the virtual machine, or create an agent-based backup plan in Arcserve UDP and use Arcserve UDP Agent (Windows) to back up the VM.
Warning	Changed Block Tracking is enabled with snapshots present. A full disk backup will be applied.	To apply the used block backup, perform the following steps: 1. Delete all the snapshots associated with the virtual machine. 2. Log in to the Backup proxy server. 3. Open the registry editor and locate the following key: HKEY_LOCAL_MACHINE\SOFTWARE\Arcserve\Unified Data Protection\Engine\AFBackupDll\<VM-InstanceUUID> Note: Replace <VM-InstanceUUID> with the UUID value of the virtual machine where CBT is failing. You can find the value in the URL of the virtual machine that is used when connected to Arcserve UDP Agent (Windows). 4. Set registry key to "full disk backupForFullBackup"=0. 5. Create/set the registry to ResetCBT=1. 6. Submit the backup job.

Status

Message

Solution

Error

Unable to enable changed block tracking.

If the virtual machine does not have hardware version 7 or higher, upgrade the hardware version of the virtual machine, or create an agent-based backup plan in Arcserve UDP and use Arcserve UDP Agent (Windows) to back up the VM.

Warning

Changed Block Tracking is enabled with snapshots present. A full disk backup will be applied.

To apply the used block backup, perform the following steps:

1. Delete all the snapshots associated with the virtual machine.

2. Log in to the Backup proxy server.

3. Open the registry editor and locate the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Arcserve\Unified Data Protection\Engine\AFBackupDll\<VM-InstanceUUID>

Note: Replace <VM-InstanceUUID> with the UUID value of the virtual machine where CBT is failing. You can find the value in the URL of the virtual machine that is used when connected to Arcserve UDP Agent (Windows).

4. Set registry key to "full disk backupForFullBackup"=0.

5. Create/set the registry to ResetCBT=1.

6. Submit the backup job.

VMware Tools

Status	Message	Solution
Warning	Out of date.	Install the latest version of VMware Tools.
Warning	Not installed or not running.	Install the latest version of VMware Tools and ensure that the tool is running.

Disk

Status	Message	Solution
Error	VM snapshots are not supported for the VM because it has a SCSI controller configured for bus-sharing configuration.	Create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent (Windows) to back up the VM.
Warning	The physical Raw Device Mapping (RDM) disk is not backed up.	Create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent (Windows) to back up the VM.
Warning	The virtual Raw Device Mapping (RDM) disk backs up as a full disk.	Create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent (Windows) to back up the VM.
Warning	The independent disk is not backed up.	Create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent (Windows) to back up the VM.
Warning	The application backs up the disk on the NFS data store as a full disk.	Create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent (Windows) to back up the VM.

Power State

Status	Message	Solution
Warning	Powered off	Power on the virtual machine.
Warning	Suspended	Power on the virtual machine.

Data Consistency

Status	Message	Solution
Warning	VMware does not support application-consistent quiescing for a VM that has IDE disks.	Create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent (Windows) to back up the Microsoft SQL Server and Exchange Server data.
Warning	VMware does not support application-consistent quiescing for a VM that has SATA disks.	Create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent to back up the Microsoft SQL Server and Exchange Server data.
Warning	VMware does not support application-consistent quiescing because the version of the ESX server is prior to release 4.1.	Upgrade ESX Server to 4.1 or higher or create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent (Windows) to back up the Microsoft SQL Server and Exchange Server data.
Warning	VMware does not support application-consistent quiescing because there are not enough SCSI slots available	Create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent (Windows) to back up the Microsoft SQL Server and Exchange Server data.
Warning	VMware does not support application-consistent quiescing if the guest OS has dynamic disks.	Create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent (Windows) to back up the Microsoft SQL Server and Exchange Server data. Note: VMware does not support application-level quiescing on virtual machines that are Windows Server 2008 or later with dynamic disks running on ESX Server 4.1 or later.
Warning	Failed to access the virtual machine.	Provide the built-in or domain administrator credentials to log in to the virtual machine guest operating system. Due to a VMware limitation, backup is supported only on VMs running on an ESX server that has a paid license. Backup is not supported on an ESXi server with a free license. Note: Data Consistency check is supported on Windows Server 2003 and later.
Warning	VMware does not support application-consistent quiescing if the guest OS has storage spaces enabled. File-level recovery is supported only for those volumes that do not have storage spaces enabled. (Full VM recovery is supported through Recover VM).	Create an agent-based backup plan in Arcserve UDP or use Arcserve UDP Agent (Windows) to back up the Microsoft SQL Server and Microsoft Exchange Server data.