Virtual Machine Manager

Virtual Machine Manager

Features

  • Intuitive hypervisor software that allows your Synology NAS servers to run various operating systems on virtual machines
  • Centralized management and monitoring of multiple instances of virtual machines in a cluster of multiple Synology NAS servers
  • Virtual machine migration for effective hardware resource management
  • High availability and disaster recovery solutions for maximum service uptime
  • Supports running Virtual DSM that offers robust features and is equally powerful as DiskStation Manager (DSM)

Specifications

  • Supports various operation systems, including Windows, Linux and Virtual DSM (Refer here for the complete list of supported operating systems and here for more information on Virtual DSM license)
  • The maximum number of virtual machines varies by Synology NAS models (Refer to this article to know how many virtual machines can be run on a Synology NAS)
  • Supports a maximum of 7 Synology NAS in a cluster
  • Privilege control for each virtual machine
  • Easy sharing of and access to virtual machines via browser URLs
  • Real-time CPU, memory, and network usage monitoring
  • Supports virtual machine instant clone within seconds
  • Supports virtual machine suspension and resumption
  • Supported image types:
    • Virtual DSM: *.pat
    • ISO: *.iso
    • Disk: *.img, *.vmdk, *.vdi, *.vhd, *.vhdx, and *.qcow2
  • Supports exporting a virtual machine as an OVA file
  • Schedulable snapshots for each virtual machine
    • Maximum number of snapshots per virtual machine: 32 (255 with a VMM Pro license)
    • Maximum number of snapshots per host: 65,536
  • Supports file-system consistent snapshots (Synology Guest Tool required on the guest OS)
  • Maximum number of virtual switches: 4 (4,096 with a VMM Pro license)
  • Maximum share links per host: 1 (16 with a VMM Pro license)
  • Virtual machine specifications
    • CPU
      • Compatibility mode for live migrations when CPUs on two hosts are different
      • Hyper-V Enlightenments function for I/O performance optimization
      • QoS for CPU resource reservation
      • The maximum number of virtual CPUs varies by Synology NAS models
    • RAM
      • Minimum RAM
        • Virtual machine: 128 MB
        • Virtual DSM: 1 GB
      • The maximum number varies by Synology NAS models
    • Disk
      • Supported disk controller: IDE, SATA, VirtIO
      • Maximum number of disks per virtual machine/Virtual DSM: 8
    • Network
      • Supported network interface: virtio, e1000, rtl8139
      • Supports SR-IOV
      • Supports MAC address modification
      • Minimum vNIC per virtual machine/Virtual DSM: 1
      • Maximum vNIC per virtual machine/Virtual DSM: 8
    • Others
      • USB 2.0/3.0 passthrough (not supported on Virtual DSM)
      • Supported video card: cirrus, vga, vmvga
      • Supported boot modes: UEFI BIOS, Legacy BIOS
  • Advanced features for Virtual Machine Manager Pro:
    • Live migration relocates a virtual machine to another host without interrupting ongoing services
    • Supports High Availability for virtual machines
    • Protection plans secure virtual machines with schedulable snapshot and replication tasks
    • Supports running virtual machines on a remote host
    • Supports storage migration to a remote host
    • Refer here for more information on VMM Pro license

Limitations

  1. Virtual machines can only run on Synology NAS with more than 2 GB of memory
  2. Virtual machine data can only be stored on Btrfs volumes
  3. Importing/Exporting virtual machines with vDisks larger than 2 TB is not supported
  4. When the virtual machine firmware is UEFI, the maximum resolution is 800x600
  5. Virtual DSM does not support the features below:
    • USB passthrough
    • Control Panel: External Device, Hardware & Power
    • Network functions, including wireless dongles, MTU, and LACP
  6. Without a Virtual DSM license, each host can only run 1 Virtual DSM. The recommended number of Virtual DSM that can run on a host varies by models
  7. Refer to this page for the list of Synology NAS models supporting Virtual Machine Manager
  8. Each host in the same cluster must have a unique static IP address
  9. The High Availability feature is only supported in VMM clusters consisting of more than 3 hosts
    • When the feature is enabled, virtual machines can only be moved between active and passive servers
  10. Web VNC console browser requirements:
    • Chrome
    • Firefox
    • Edge
    • Internet Explorer 11
    • Safari 10 or above
  11. Virtual Machine Manager 2.5.0-9432 and above versions are compatible with Synology High Availability 2.0.3-0140 or above
  12. When Virtual Machine Manager is running in a Synology high-availability cluster:
    • There can only be one host in the VMM cluster
    • SR-IOV is not supported

Synology Guest Tool for Virtual Machine Manager

Features

  1. Enhances the compatibility between Windows virtual machines and Virtual Machine Manager, and boosts virtual machine performance
  2. Protects data with comprehensive snapshot features

Specifications

  1. System requirements
    • Windows 10
    • Windows 8.1
    • Windows 8
    • Windows 7
    • Windows Server 2016
    • Windows Server 2012 R2
    • Windows Server 2008 R2 (Windows Server 2008 only supports Synology Guest Tool 1.4.2)
  2. Offers VirtIO drivers for Windows, including vDisk drivers and vNICs
  3. Offers drivers that help with the communication between virtual machines and Synology NAS
  4. Supports file-system consistent snapshots

Limitations

  1. Windows Server 2008 virtual machines must restart after Synology Guest Agent is installed