Virtual Infrastructure

Barracuda Networks recommends ensuring the latest hotfixes, patches, and updates are installed on your data sources.

Barracuda Backup follows the lifecycle policy of each supported vendor and does not support versions that are end of life or end of support as indicated by the product vendor.

Barracuda Backup provides support for the versions and platforms listed in the following tables.

Virtual Infrastructure

Type	Specification	Requirements

Type	Specification	Requirements
VMware	Platform	vSphere 8.0 vSphere 7.0
	Hypervisors	ESXi 8.0 ESXi 7.0 Free ESXi not supported. Barracuda Backup leverages vSphere and vStorage APIs which VMware has disabled in free ESXi.
	Management Server	vCenter Server 8.x vCenter Server 7.x
Microsoft Hyper-V	Platform	Windows Server 2025 Windows Server 2022 Windows Server 2019 Windows Server 2016
	Hypervisors	Hyper-V Server 2022 Hyper-V Server 2019 Hyper-V Server 2016
	Management Server (optional)	Microsoft System Center Virtual Machine Manager 2019 (optional) Microsoft System Center Virtual Machine Manager 2016 (optional)
Proxmox VE	Platform	Proxmox VE 9.x Proxmox VE 8.x
	Hypervisors	KVM (QEMU) via Proxmox VE
	Management Server	Proxmox VE web interface (built-in)

Guest Virtual Machines

Type	Specification	Requirements

Type	Specification	Requirements
VMware	Virtual Hardware	All types and versions of virtual hardware supported, including 62 TB VMDK. VMs with disks engaged in SCSI bus sharing are not supported, because VMware does not support snapshotting such VMs. RDM virtual disks in physical mode, independent disks, and disks connected via in-guest iSCSI initiator not supported and skipped from processing automatically. Network shares and mount points targeted to 3rd party storage devices are also skipped as these volumes/disks are not visible in the VM configuration file.
	Operating Systems	All operating systems supported by VMware.
	Software	VMware Tools (optional, recommended). VMware Tools required for the following operations: application-aware processing (quiesce). All latest OS service packs and patches (required for application-aware processing).
Hyper-V	Virtual Hardware	Supported virtual hardware version 5.0 though 9.0 (Hyper-V 2019). Both Generation 1 and 2 VMs supported, including 64 TB VHDX disks. [For Microsoft Hyper-V 2016 Server VMs] Processing of VMs with pass-through virtual disks and disks connected via in-guest iSCSI initiator not supported. [For Microsoft Hyper-V 2012 R2 server and earlier VMs] Pass-through virtual disks and disks connected via in-guest iSCSI initiator not supported and skipped from processing automatically.
	Operating Systems	All operating systems supported by Hyper-V.
	Software	Hyper-V integration components (required for application-aware processing)
Proxmox VE	Virtual Hardware	All virtual hardware types supported by Proxmox VE/QEMU.
	Operating Systems	All operating systems supported by Proxmox VE.
	Software	QEMU Guest Agent (optional, recommended). QEMU Guest Agent required for application-consistent backups.

File-Level Restore from Guest Virtual Machines (LiveBrowse)

Note: LiveBrowse is not currently supported for Proxmox VE virtual machines. The supported disk formats, partition structures, and file systems listed below apply to VMware and Hyper-V only.

Virtual Disk Formats	Supported: VHD/VHDX Fixed VHD/VHDX Dynamic VMDK Thin VMDK ZeroedThick VMDK EagerZeroedThick Unsupported: VHD/VHDX Differencing
Partition/Volume Structures	Supported: Master Boot Record (MBR) Disks GUID Partition Table (GPT) Linux Logical Volume Manager (LVM) Single disk/volume only, multiple LVM partitions cannot be LiveBrowsed Logical Disk Manager (LDM-4200) Volumes
File Systems	Supported: NTFS FAT FAT32 ext2 ext3 ext4 XFS BTRFS ReiserFS Unsupported: ReFS Windows Data Deduplication Role/Feature
Windows Volumes	Supported: Simple Unsupported: Spanned Striped Mirrored RAID 5 volumes
Disk Sizes	Unsupported: Virtual disks larger than 2TB Notes: To mount the virtual disk for LiveBrowse recovery, you will need to ensure that there is sufficient free disk space on your backup appliance equal to the size of the disk being recovered from. Disks formatted with a cluster size (allocation unit size) other than 4096 bytes (4 KB) are not supported for LiveBrowse recovery.

VMware Virtual Machine (LiveBoot) Instant Recovery

Type	Operating System	Supported File Systems

Type	Operating System	Supported File Systems
VMware	Operating Systems	All operating systems supported by VMware⁽¹⁾
	File Systems	FAT FAT32 NTFS ext2 ext3 ext4 ReiserFS JFS XFS Btrfs
Note: ⁽¹⁾ See VMware Guest Operating System Installation Guide for a list of operating systems supported by VMware.

VMware and Hyper-V Virtual Machine Cloud Recovery (Cloud LiveBoot)

Type	Operating System	Supported File Systems

Type	Operating System	Supported File Systems
VMware	Operating Systems	All operating systems supported by VMware.
	File Systems	FAT FAT32 NTFS ext2 ext3 ext4 ReiserFS JFS XFS Btrfs
	Other	Maximum of 4 virtual disks per guest VM supported. VMware EFI partitions not supported by Cloud LiveBoot.
Hyper-V	Operating Systems	All operating systems supported by Hyper-V.
	File Systems	FAT FAT32 NTFS ext2 ext3 ext4 ReiserFS JFS XFS Btrfs
	Other	Both Generation 1 and 2 VMs supported. UEFI partitions not supported by Cloud LiveBoot. Maximum of 4 virtual disks per guest VM supported. Windows Dynamic Disk partitions supported by Cloud LiveBoot. Differencing disks (.avhd/.avhdx) configurations not supported by Cloud LiveBoot.