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Druva Documentation

System requirements

Phoenix Editions: File:/tick.png Business File:/cross.png Enterprise File:/tick.png Elite

Support matrix

This topic contains information about the VMware vCenter Server versions and ESXi Hosts and Standalone VMware ESXi Hosts versions, that Phoenix certifies and supports.

Support levels definition

Druva categorizes its platform support levels as following:

  • Certified Platforms
    A certified platform is fully tested by Quality Assurance (QA) team. Druva certifies these environments and performs regular testing with every cloud release to ensure the functionality works as expected.
  • Supported Platforms
    A supported platform is not tested by the Druva QA team with every cloud release, however, the functionality should work as expected. Druva will provide support for such platforms. Issues that require time and resources beyond commercial viability may not be addressed.

VMware vCenter server and ESXi host versions

This section lists the Certified and Supported versions for VMware vCenter Server and ESXi Hosts.

Certified Platform
vCenter Server ESXi Host License


  • 6.7
  • 6.5
  • 6.0


  • 6.5
  • 6.0
  • 5.5



  • 6.0
  • 5.5
  • 5.1





  • 5.5
  • 5.1


Supported Platform

Following table lists the Supported versions for vCenter.

Supported versions License Type
5.1 Standard

Standalone ESXi Host

This section lists the Certified and Supported versions for Standalone ESXi Host.

Certified Platform

Following table lists the Certified versions for Standalone ESXi.

Certified versions License Type
6.7 Standard
6.5 Standard
6.0 Standard
5.5 Standard

Supported Platform

Following table lists the Supported versions for Standalone ESXi.

Supported versions License Type
5.1 Standard

Note: To backup virtual machines hosted on vCenter and ESXi versions 6.5, use backup proxy version 4.6.9-27415 or later.

Backup proxy compatibility

Following table describes the virtual machines backup support corresponding to backup proxy deployed on specific vCenter and ESXi versions:

Backup proxy version Backup proxy compatibility

4.7.2-42700 or later

vCenter or ESXi versions:

  • 6.7
  • 6.5
  • 6.0
  • 5.5
  • 5.1

4.6.9-27415 to 4.7.2-42106

vCenter or ESXi versions:

  • 6.5
  • 6.0
  • 5.5
  • 5.1

Versions older than 4.6.8-20739

vCenter or ESXi versions:

  • 6.0
  • 5.5
  • 5.1

If a backup proxy is deployed on an incompatible vCenter or ESXi version, virtual machine backup jobs will fail. 

Guest operating systems

Certified Platform

Operating system Editions
  • Windows Server 2012 R2 (64-bit) 
  • Windows Server 2012 (64-bit)
  • Windows Server 2008 R2 (64-bit) 
  • Windows Server 2008 (64-bit) 
  • CentOS 6.3, 6.4, 7.0, 7.1 and 7.2 (64-bit)
  • Red Hat Enterprise Linux (RHEL)6.3, 6.4, 7.0, 7.1 and 7.2  (64-bit)

Disks, partitions and, files for File Level Restore (FLR)

Item Certified

Partition Types

  • Primary
  • Extended
  • Logical Disk Manager (LDM): 
    • Windows
      • Basic disk (Partition type: MBR/GPT) 
      • Dynamic disk (Partition type: MBR. Partition can have simple or spanned volume.)
        Note: Dynamic Disk with GPT partition type is not supported.
    • Linux
      • ​​​​​​​​​​​​​​MBR  (Simple/Spanned/Mirror/Striped) 
      • GPT (Simple/Spanned/Mirror/Striped)​​​​​​​

File Systems

  • NTFS
  •  FAT
  •  FAT32 
  •  Ext2/3/4
  • XFS

File Type

  • Regular Files
  • Sparse Files
  • Hidden Files

vSAN versions

Phoenix backup proxy supports backup and restore of virtual machines on the following vSAN versions:

  • 6.6
  • 6.5

Ports and communication protocols for Phoenix

Phoenix communicates with your virtual infrastructure to backup and restore virtual machine data. This communication happens via ports and communication protocols that are secure for communication and transition of data.

Phoenix uses combination of Transport Layer Security (TLS) and Secure Socket Layer (SSL) protocols for establishing connection and initiating communication between Phoenix components and your virtual infrastructure components such as vCenter Server, ESXi hosts, and virtual machines.

The following diagram depicts the ports and communication protocols that are used by Phoenix for secure connection and communication during the backup and restore operations.

The following table describes the port and communication protocols used for communication between Phoenix and various VMware components.

Port/Communication Protocol Description


Phoenix uses Port 443 to establish secure connection and communication between the following:

  • Backup Proxy to Phoenix Cloud
  • Backup Proxy to Phoenix CloudCache
  • Backup Proxy to vCenter Server
  • Backup Proxy to ESXi host
    Note: Backup proxy establishes connection with ESXi host over Port 443 only if it registered with Phoenix as Standalone ESXi. If the ESXi host is registered with Phoenix through vCenter Server, backup proxy communicates with the ESXi host over Port 902.


Phoenix uses Port 902 to establish a connection between the backup proxy and ESXi host registered with Phoenix through vCenter Server.



During the backup cycle, the backup proxy sends network packets to Windows virtual machines (where VMware tools are installed) on port 3389 to identify if the RDP port is open or not. For Linux virtual machines, the port is 22, which is used for SSH.

This is used for Phoenix DRaaS or DR restores.

123 (UDP) Backup proxy accesses NTP server on Port 123 (UDP) for time synchronization.


Phoenix uses TLS for a secure connection that happens between the following:

  • Backup proxy and Phoenix Cloud
  • Backup proxy and Phoenix CloudCache
  • Phoenix CloudCache and Phoenix Cloud


Phoenix uses SSL for a secure connection that happens between the following:

  • Backup proxy and vCenter Server
  • Backup proxy and ESXi hosts