Veritas NetBackup™ for Hyper-V Administrator's Guide

Last Published:
Product(s): NetBackup (8.2, 8.1.2, 8.1.1)
  1. Introduction
    1.  
      About Hyper-V
    2.  
      NetBackup for Hyper-V environment
    3.  
      Hyper-V terminology related to backup
    4.  
      Basic phases in a NetBackup backup of a Hyper-V virtual machine
    5.  
      NetBackup administrator tasks for Hyper-V
    6.  
      Quick reference for troubleshooting
  2. Notes and prerequisites
    1.  
      NetBackup for Hyper-V prerequisites
    2.  
      NetBackup for Hyper-V notes and restrictions
    3.  
      NetBackup character restrictions for Hyper-V virtual machine display names
    4.  
      NetBackup character restrictions for vhd or vhdx names and the VM path when the Enable file recovery from VM backup option is used
    5.  
      Notes on Linux virtual machines
  3. Configure NetBackup communication with Hyper-V
    1.  
      Changing the NetBackup Legacy Network Service logon (vnetd.exe) to the domain user account
    2.  
      Setting global limits on the use of Hyper-V resources
  4. Configure NetBackup policies for Hyper-V
    1.  
      Creating a Hyper-V policy from the Policy Configuration Wizard
    2.  
      Creating a Hyper-V policy from the NetBackup Policies utility
    3.  
      Limit jobs per policy on the Attributes tab (for Hyper-V)
    4.  
      Virtual machine host names and display names should be unique if VMs are selected manually in the policy
    5. Backup options on the Hyper-V tab
      1.  
        Optimization options (Hyper-V)
      2.  
        Primary VM identifier option (Hyper-V)
      3.  
        Enable offline backup of non-VSS VMs (Hyper-V with VSS)
      4.  
        Cluster shared volumes timeout (Hyper-V with VSS)
    6. Hyper-V - Advanced Attributes
      1.  
        Provider Type configuration parameter (VSS)
      2.  
        Snapshot Attribute configuration parameter (VSS)
      3.  
        Virtual disk selection parameter (WMI)
      4.  
        Existing snapshot handling parameter (WMI)
      5.  
        Consistency level parameter (WMI)
      6.  
        About the exclude disk options for virtual disk selection
      7.  
        Virtual disk selection options: an example to avoid
      8.  
        Restoring data from the backups that excluded the boot disk or data disks
    7. Browse for Hyper-V virtual machines
      1.  
        About cached names for virtual machine backup
    8.  
      Prerequisites for alternate client backup of a virtual machine (VSS)
    9.  
      Configuring alternate client backup of virtual machines
    10.  
      Requirements for a NetBackup client inside the virtual machine
  5. Configure Hyper-V Intelligent Policies
    1.  
      About Hyper-V Intelligent Policy (automatic selection of virtual machines for backup)
    2.  
      The basics of a NetBackup query rule
    3.  
      Important notes on Hyper-V Intelligent Policy
    4.  
      NetBackup requirements for Hyper-V Intelligent Policy
    5.  
      Setting up Hyper-V Intelligent Policy: Task overview
    6.  
      Options for selecting Hyper-V virtual machines
    7.  
      Creating a Hyper-V policy for automatic virtual machine selection
    8.  
      Editing a query in Basic Mode
    9.  
      Using the Query Builder in Advanced Mode
    10.  
      AND vs. OR in queries
    11.  
      Examples for the NetBackup Query Builder
    12.  
      The IsSet operator in queries
    13.  
      About selecting virtual machines by means of multiple policies
    14.  
      Order of operations in queries (precedence rules)
    15.  
      Parentheses in compound queries
    16.  
      Query rules for virtual machine Notes that contain a newline character
    17.  
      Query Builder field reference
    18.  
      Test Query screen for Hyper-V
    19.  
      Test Query: Failed virtual machines
    20.  
      Effect of Primary VM identifier parameter on Selection column in Test Query results
    21.  
      Effect of Primary VM identifier parameter on VM Name column in Test query results
    22.  
      Restoring a VM that was backed up with a Hyper-V Intelligent Policy and that has a pass-through disk
  6. NetBackup Hyper-V for SCVMM
    1.  
      About backup of virtual machines in an SCVMM environment
    2.  
      Notes on NetBackup for Hyper-V with SCVMM
    3.  
      Creating a query to back up VMs in a localized SCVMM environment
  7. Windows Server failover cluster support
    1.  
      About virtual machines on Windows 2008, 2012, and 2016 failover clusters
    2.  
      Notes on CSV backup and restore
    3.  
      Creating a policy for virtual machines in a cluster
    4.  
      Location of the restored virtual machine in a cluster
    5. Virtual machine maintenance after a restore
      1.  
        Removal of cluster resources during restore
    6.  
      Hyper-V restore may fail if the VM was created on a CSV and the CSV is a reparse point on the destination drive
  8. Back up and restore Hyper-V
    1.  
      Backing up Hyper-V virtual machines
    2.  
      WMI backup method: State of the virtual machine before and after restore
    3.  
      Notes on individual file restore
    4.  
      Notes on full virtual machine restore
    5.  
      About restoring individual files
    6.  
      Restoring individual files to a host that has a NetBackup client
    7.  
      Restore Marked Files dialog for restore of individual files
    8. Restoring individual files to a shared location on the virtual machine
      1.  
        Setting up NetBackup Client Service for restore to a shared location on the virtual machine
    9.  
      Restoring the full Hyper-V virtual machine
    10.  
      Restore Marked Files dialog for restore of the Hyper-V virtual machine
    11.  
      About restoring common files
    12.  
      The BAR interface may list Hyper-V snapshot files when you browse to restore Hyper-V VM files
  9. Use Accelerator to back up Hyper-V
    1.  
      About the NetBackup Accelerator for virtual machines
    2.  
      Accelerator: full vs. incremental schedules
    3.  
      How the NetBackup Accelerator works with virtual machines
    4.  
      Accelerator notes and requirements for virtual machines
    5.  
      Accelerator forced rescan for virtual machines (schedule attribute)
    6.  
      Accelerator requires the OptimizedImage attribute
    7.  
      Accelerator backups and the NetBackup catalog
    8.  
      Accelerator messages in the backup job details log
    9.  
      NetBackup logs for Accelerator with virtual machines
    10.  
      About reporting the amount of Accelerator backup data that was transferred over the network
    11.  
      Replacing the Accelerator image size with the network-transferred data in NetBackup command output
  10. Best practices and more information
    1.  
      Best practices
  11. Troubleshooting
    1. NetBackup logs for Hyper-V and how to create them
      1.  
        Enabling VxFI logging
      2.  
        Configuring VxMS and vhd logging
      3.  
        Format of the VxMS core.log and provider.log file names
    2. Errors during policy creation
      1.  
        NetBackup policy validation failed
    3. NetBackup status codes related to Hyper-V
      1.  
        Snapshot error encountered (status code 156)
    4.  
      Backup job hangs for multiple virtual machines
    5.  
      Viewing or resizing Windows NTFS shadow storage
    6.  
      The Hyper-V integration component is not installed
    7.  
      LDM volumes and status code 1
    8.  
      Hyper-V snapshots (avhd or avhdx files) and status code 1
    9.  
      Unable to log in to the NetBackup Administration Console
    10.  
      When backing up the virtual machines that reside on the same CSV, Windows warning 1584 can be ignored
    11.  
      Problems with alternate client backup
    12.  
      Restored virtual machine fails to start
    13.  
      Problem with a restart of a restored virtual machine: Why did the computer shut down unexpectedly?
    14.  
      Problems with restore of individual files
    15.  
      Problems with restore of the full virtual machine
    16.  
      Unable to change virtual disk settings for a VM after restore if the VM had user checkpoints during a backup that used the WMI method
    17.  
      Increasing the WMI create disk time-out value
    18.  
      Linux VMs and persistent device naming
  12. Appendix A. VSS backup method: Hyper-V online and offline backups
    1.  
      About Hyper-V online and offline backups for VSS
    2.  
      Conditions that determine online vs. offline backup for VSS
    3.  
      Additional notes on offline backups with VSS
    4.  
      Hyper-V 2012 R2 virtual machines may be in the Off state when restored
  13. Appendix B. Hyper-V pass-through disks
    1.  
      About Hyper-V pass-through disks with NetBackup
    2.  
      Configurations for backing up pass-through disks
    3.  
      Requirements for backing up Hyper-V pass-through disks
    4.  
      Restrictions for Hyper-V pass-through disks
    5.  
      Configuring a local snapshot backup of Hyper-V pass-through disks
    6.  
      About alternate client backup of pass-through disks
    7.  
      Configuring an alternate client backup of Hyper-V pass-through disks
    8.  
      Important note on VSS and disk arrays
  14. Appendix C. NetBackup commands to back up and restore Hyper-V virtual machines
    1.  
      Using NetBackup commands to create a Hyper-V policy
    2.  
      Using NetBackup commands to create a Hyper-V Intelligent Policy
    3.  
      The bpplinfo options for Hyper-V policies
    4.  
      bpplinclude options for modifying query rules in Hyper-V policies
    5. Examples of nbrestorevm for restoring VMs to Hyper-V
      1.  
        Hyper-V examples of restore to original location
      2.  
        Hyper-V examples of restore to alternate locations
    6.  
      The nbrestorevm -R rename file for Hyper-V
    7.  
      Notes on troubleshooting the nbrestorevm command for Hyper-V
    8.  
      Logs for troubleshooting the nbrestorevm command

NetBackup for Hyper-V notes and restrictions

The following notes and restrictions apply to NetBackup for Hyper-V:

  • For VSS with disk arrays:

    To use a hardware array snapshot, make sure that the hardware array's VSS provider supports the snapshots that involve the Hyper-V writer. Consult the release notes of the array vendor or VSS provider.

  • NetBackup for Hyper-V does not support the NetBackup Instant Recovery feature.

  • The following is due to a Microsoft limitation: NetBackup for Hyper-V does not support VSS or WMI backup or restore of the vhdx files that are shared among multiple VMs.

  • To perform Hyper-V backups with the SAN Client feature, install SAN Client on the Hyper-V server. Do not install SAN Client on the virtual machines. For more information on SAN Client with Hyper-V, see the NetBackup SAN Client and Fibre Transport Guide.

    Note:

    The SAN Client feature for Hyper-V is only supported for the VSS backup method (not for WMI).

  • The following is due to a Microsoft limitation: If the VM's virtual disk files reside in a volume or folder that is compressed, NetBackup cannot use the WMI backup method to create a snapshot of the VM. The snapshot job fails with status 156, "snapshot error encountered."

    As a workaround, remove compression from the volume or folder where the virtual disk resides and rerun the backup.

  • NetBackup for Hyper-V supports Windows NTFS file encryption and compression, for backup and restore. However, it does not support NetBackup's compression or encryption options (in the NetBackup policy attributes).

    For UNIX or Linux guest operating systems: NetBackup for Hyper-V does not support any type of compression or encryption, whether they are set in NetBackup or in the guest OS.

    Note:

    The compressed Windows NTFS files are backed up and restored as compressed files.

  • If a policy is changed from manual selection to Intelligent policy (or vice versa), note: The next backup of the VM is a regular full backup, even if a backup already exists for that VM.

    For example:

    • In a new Hyper-V policy, the Select manually option on the Clients tab is used to select a VM. The first backup from the policy runs.

    • In the policy, an Intelligent Policy query is used to select the same VM, and the VM is backed up a second time. Because of the switch from manual selection to query-based selection, this second backup is a regular full backup. Note that for a policy that uses Enable block-level incremental backup (BLIB) or BLIB plus Accelerator, the backup processing is not limited to changed blocks only.

      For the second backup, the Detailed status log includes a message similar to the following:

      Sep 29, 2016 11:16:53 AM - Info bpbrm (pid=13680) There is no 
      complete backup image match with track journal, a regular full 
      backup will be performed.

      The same backup behavior occurs if the policy's VM selection is switched from query-based to manual selection: The second backup is a regular full backup.

  • For the WMI backup method with the Enable block-level incremental backup option (with or without Accelerator): If the VM has multiple virtual disks that have the same disk UUID, NetBackup performs a full backup of those disks. It does not perform an incremental backup of them. The disks that have unique IDs undergo an incremental backup, as expected. In the Activity Monitor, the job details include messages such as the following:

    The virtual machine (Name: testVM, GUID: 98321741-A936-4128-8AB0-07099B23E25C) uses 
    multiple disks with the same disk Id.
    Disk Id: 7198C033-AB5D-4585-905D-0DA68D26F9C5  Disk path: E:\VMs\testVM\testVM1.vhdx
    Disk Id: 7198C033-AB5D-4585-905D-0DA68D26F9C5  Disk path: E:\VMs\testVM\testVM2.vhdx
    You may lose optimization during the backups for the above listed disks.

    To perform incremental backup of these virtual disks, assign a unique ID to each disk. For example, you can use the Set-VHD PowerShell cmdlet to reset the disk ID for testVM1 as follows:

    Set-VHD -Path E:\VMs\testVM\testVM1.vhdx - ResetDiskIdentifier

    In the case of the differencing disks, you must run additional commands to re-create the disk chain. For more details on the Set-VHD cmdlet, see the following Microsoft TechNet article:

    https://technet.microsoft.com/en-us/library/hh848561.aspx

  • Additional notes are available on Accelerator:

    See Accelerator notes and requirements for virtual machines.

  • The following is due to a Microsoft limitation: NetBackup for Hyper-V does not support backup of encrypted vhd or vhdx files.

  • The following is due to a Microsoft limitation; this note applies to the VSS backup method only. For the virtual machines that have a FAT or FAT32 file system, NetBackup supports only Hyper-V offline backup.

    See About Hyper-V online and offline backups for VSS.

  • The WMI backup method (for Hyper-V Server 2016 and later) does not employ online vs offline backups.

    See WMI backup method: State of the virtual machine before and after restore.

  • For the VSS backup method: If a virtual machine is in the Paused state when the backup starts, the virtual machine is placed in the Saved state after the backup completes.

  • The WMI backup method supports a new Hyper-V policy option: Consistency level (on the policy's Hyper-V tab under Advanced). The available settings are Application Consistent Then Crash Consistent, Application Consistent, and Crash Consistent.

    For the WMI backup method, note the following:

    • If a virtual machine is in the Paused state during backup and Consistency level is set to Application Consistent, the backup fails during snapshot creation. If Consistency level is set to Application Consistent Then Crash Consistent or Crash Consistent, the backup succeeds. The virtual machine is in the Off state after the restore.

    • If a virtual machine is in the Saved state during backup and Consistency level is set to Application Consistent, the backup fails during snapshot creation. If Consistency level is set to Application Consistent Then Crash Consistent or Crash Consistent, the backup succeeds. The virtual machine is in the Saved state after the restore.

    See Consistency level parameter (WMI).

  • NetBackup for Hyper-V has certain character restrictions for virtual machine display names.

    See NetBackup character restrictions for Hyper-V virtual machine display names.

  • NetBackup for Hyper-V does not support restores with the Fibre Transport data transfer method.

  • More information is available on the restore of Hyper-V virtual machines.

    See Notes on individual file restore.

    See Notes on full virtual machine restore.

  • More information about NetBackup for Hyper-V support is available in the following documents: