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vRanger 7.6.6 - User Guide

Introduction Configuring vRanger
Configuring vRanger through the Startup Wizard Configuring vRanger manually Supplemental instructions: additional repository types
Using vRanger Backup Restore
Restoring a physical server Performing a full restore for VMware VMs Performing a full restore for Hyper-V® VMs Performing a full restore for VMware vApps Performing a full restore of a physical machine Performing an FLR on Windows Performing an FLR on Linux Restoring from manifest
Replicate VMs Reports Integrating and monitoring vRanger Using the vRanger Console vAPI Cmdlet details
Add-BackupJobTemplate Add-CIFSRepository Add-DdbReplicationRepository Add-DdbRepository Add-EsxHost Add-HypervCluster Add-HypervHost Add-HypervRestoreJobTemplate Add-NFSRepository Add-NVSDRepository Add-PhysicalMachine Add-RdaRepository Add-ReplicationJobTemplate Add-RestoreFromManifestJobTemplate Add-RestoreJobTemplate Add-VirtualAppforLinuxFLR Add-VirtualAppforLinuxFLRVA Add-VirtualCenter Disable-Job Dismount-LinuxVolume Enable-Job Get-AddressBook Get-BackupGroupEntity Get-CatalogSearchData Get-CatalogStatus Get-ConfigOption Get-Connection Get-CurrentTemplateVersionID Get-Datastore Get-GlobalTransportFailover Get-InventoryEntities Get-IsInventoryRefreshing Get-Job Get-JobTemplate Get-MonitorLog Get-Network Get-PhysicalMachineDiskMap Get-Repository Get-RepositoryJob Get-RepositorySavePoint Get-RestoreDiskMap Get-SavepointDisk Get-SavepointManifest Get-Savepoints Get-TransportFailover Get-VirtualApplianceConfig Get-VirtualApplianceDeploymentStatus Get-VirtualApplianceReconfigStatus Get-VirtualMachinesUnderInventory Get-VmDisk Get-VMDKVolume Install-VirtualAppliance Mount-LinuxVolume New-BackupFlag New-BackupGroupMember New-Daily Schedule New-EmailAddress New-IntervalSchedule New-MonthlySchedule New-ReplicationFlag New-RestoreFlag New-SMTPServer New-TransportConfiguration New-VirtualAppliance New-WeeklySchedule New-YearlySchedule Remove-AllMount Remove-BackupGroupEntity Remove-BackupGroupMember Remove-Catalog Remove-DdbStorageUnit Remove-JobTemplate Remove-LinuxVolume Remove-Repository Remove-SavePoint Remove-VirtualAppliance Remove-VirtualApplianceConfiguration Run-JobsNow Run-ReplicationFailover Run-ResumeReplicationFailover Run-TestReplicationFailover Set-Cataloging Set-CBTonVM Set-LinuxVolume Set-MountPath Set-Resources Stop-vRangerJob Update-BackupJobTemplate Update-GlobalTransportFailover Update-HypervRestoreJobTemplate Update-Inventory Update-ReplicationJobTemplate Update-RestoreJobTemplate Update-VirtualAppliance Update-VirtualApplianceConfiguration
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Physical backup transport options

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Backup > Reviewing backup transport options > Physical backup transport options

Physical backup transport options

vRanger transports describe only how data is read from the source server, not how the data is sent to the repository. When backing up physical servers, the vRanger client reads the data directly from the disk and sends data from the source server to the repository. Depending on how the source server is connected to the repository, this process can result in network backups or LAN-free backups. For backups to be LAN-free, the source server and repository must exist on the same SAN.

When performing backups of physical servers, or backup groups containing physical servers, the Transport Selection portion of the Backup Wizard is not shown, as there is only one available option.

Determining application consistency

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Backup > Determining application consistency

Determining application consistency

The levels of, and methods for providing, application consistency differ between VM backups and backups of physical servers. For more information, see the following topics:

Application consistency for virtual backups

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Backup > Determining application consistency > Application consistency for virtual backups

Application consistency for virtual backups

vRanger provides various levels of protection for VMs. The means that each level uses to accomplish its task depends on the type of VM being protected.

Application consistency for VMware VMs

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Application consistency for VMware VMs

By default, vRanger does not provide quiescing during backups. When you enable the Enable Guest Quiescing option, quiescing in vRanger is provided by leveraging the VMware® Tools installed in the VM.

This feature can provide three different levels of backup consistency:

Crash consistent: A crash-consistent backup is analogous to pulling the plug on a server and then backing up the data. The state of the data that is being backed up with respect to the users of the data is indeterminate. Restoring a crash-consistent image is equivalent to rebooting a server after a hard shut-down.
File-system consistent: File-system consistency is achieved through standard quiescing by using the VMware Sync Driver, which ensures that no file-system writes are pending when the snapshot is taken. For normal VMs, file-system consistency is adequate, although it can cause corruption in database applications.
Application consistent: Consistency of VSS-compatible applications is achieved by freezing application I/Os prior to creating the VM snapshots. This option ensures that all application writes requests in the machines memory are committed to disk before the snapshot is taken.

The level of consistency provided by the Enable Guest Quiescing option depends on the version of VMware® ESXi™ — and the corresponding VMware Tools — and the guest operating system. The following table provides more detail on what is needed to achieve various levels of consistency:

Table 1. Achieving consistency

File-level quiescing

 

ESXi 6.0

ESXi 6.5

ESXi 6.7

Windows Server 2008 R2 SP1

VMware VSS

VMware VSS

VMware VSS

Windows Server 2012

Windows Server 2012 R2

VMware VSS

VMware VSS

VMware VSS

Windows Server 2016

VMware VSS

VMware VSS

VMware VSS

 

 

 

 

Application-level quiescing

 

ESXi 6.0

ESXi 6.5

ESXi 6.7

Windows Server 2008 R2 SP1

vzShadow.exe

vzShadow.exe

vzShadow.exe

Windows Server 2012

Windows Server 2012 R2

vzShadow.exe

vzShadow.exe

vzShadow.exe

As shown in the preceding table, application consistency is not always available with the basic quiescing options. In these situations, you may use the vRanger VSS Tools — vzShadow.exe — for application-level consistency.

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