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Unitrends Volume CBT Driver Reinstallation (Image-Level/Block Agent)
SUMMARY The CBT volume filter driver may enter a state where incrementals are always promoted reporting that "there was an error encountered while loading the CBT Block Driver" in the backup log as the reason for promotion. ISSUE Image-level incremental backups persistently promote to full, likely following a major…
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File Catalog updates stalled or slow or Image and Host level backups larger when using Windows Defender
As of May 11th, this issue may be resolved by updating to Windows Defender 1.1.18100.6 and clearing existing logs. Issue: File-level backups hang on "Updating file catalog..." for an extended period of time. This appears related to historical scan logging in Windows Defender starting with the Windows Defender…
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[VIDEO] Creating backup jobs
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File-level backup VSS Provider error on Hyper-V VMs moved to VMware
SUMMARY Upon attempting to perform an agent based backup of a server that had been previously moved from Hyper-V to VMware, the following error is encountered. (VSS_E_UNEXPECTED_PROVIDER_ERROR) The shadow copy provider had an unexpected error while trying to process the specified operation. ISSUE In many cases, VMs that…
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Windows Script Host Error [0xFFFFFFFF] Upon Logon - ApplySambaCredentials.vbs
ISSUE When logging into a protected asset, the Windows script error below is presented. CAUSE A local security or group policy prevented the VBS script to run through PowerShell. RESOLUTION Remove the ApplySambaCredentials.vbs registry key. Before making any changes to the registry, it is highly recommended that a backup…
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Unable to update appliance; /var is 100% full
Description: The appliance is unable to perform software updates, and there are no conflicting active jobs. Symptom: You may have an alert (see "bell" icon at the top right of the web interface) with a message like "Disk space usage threshold exceeded. Disk /var is 100% full (23 MB free)." Resolution: The following steps…
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VMware permissions for Backup and Restore
SUMMARY Explanation of the VMware permissions required to perform backups and restores. DESCRIPTION Required Permissions to Complete a Backup per VMWare documentation may be able to be limited to certain roles. However, per the same VMWare documentation, VMWare states this: Restore Permissions To perform restore…
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How can I back up the configuration for a Unitrends appliance?
SUMMARY This article provides information on how to backup configuration settings, also known as the system metadata, of your Unitrends appliance. ISSUE System metadata, which includes client schedules, storage configuration, and system settings, is automatically backed up as part of a replication or archiving job. In the…
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The tree menu for creating SQL backup jobs does not allow selection of all databases
SUMMARY Steps to resolve an issue where the tree menu for creating SQL backup jobs would not allow selection of all databases. ISSUE The tree menu for creating SQL backup jobs would not allow selection of all databases. RESOLUTION Upgrade to version 9.1.0 or later of the Unitrends software. CAUSE A known bug in a version…
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Xen: Attaching the disk failed
SUMMARY This article addresses the failiure message "Attaching the disk to vm failed" with internal error DISK_VBD_MUST_BE_READWRITE_FOR_HVM. ISSUE Xen backups fail with the following backup message: ----- XProtect Messages ----attaching the disk to vm failed----- End XProtect Messages ---- The internal Xen API error…