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Instant availability of any Windows operating system


Instant recovery for Windows systems with vStandby

NetJapan's vStandby virtual standby availability solution creates and maintains dormant virtual replicas of your physical and virtual machines. These standby virtual replicas, created directly on an ESXi host, are kept up-to-date using scheduled asynchronous incremental snapshots. A vStandby virtual machine can be instantly started when switchover becomes necessary.


You can use vStandby to:

  • Be up and running in as little as 2 minutes even in the event of total hardware failure
  • Lower the cost of downtime in terms of both time and money
  • Simplify migration and virtualization of Windows machines
  • Regularly test your Business Continuity Plan

vStandby is licensed per operating system for both physical and virtual Windows machines. Available in 2 versions:

  • vStandby Server Edition
  • vStandby Desktop Edition


Main features

2 minute restore

2 Minute downtime – Near-line availability

Create standby virtual replicas of mission critical servers in a VMware ESXi hypervisor for cost effective protection with standby availability.

solution agnostic, standalone

Backup solution agnostic 

vStandby installs and works seamlessly alongside pre-existing software and hardware backup solutions, meaning you can have vStandby availability without sacrificing your existing backup solution.

instant recovery

Instant recovery to any point-in-time backup, no need to add drivers

Start your standby virtual machine from a selected point-in-time snapshot without needing to install additional drivers.

revive physical machines in no time

Revive physical machines in no time

Restore a vStandby virtual machine, including all the changes made while in operation, back to the original physical hardware if needed.

incremental backups every 10 minutes

Scheduled incremental physical to virtual snapshots 

vStandby protects your servers by creating scheduled incremental snapshots to ensure a pre-defined level of availability.

support for free vmware esxi licence

ESXi free license support

vStandby supports the free license versions of VMware ESXi. See documentation for complete details.

  • Asynchronous replicas sent directly to a VMware ESXi host
    Your physical and virtual machines are replicated directly to an ESXi host, creating dormant standby virtual machines that are ready for instant switchover when the source machine fails.
  • Multiple recovery points
    Choose any boot point you want to use when booting a vStandby replica server on a regular VMware ESXi host. For the free version of ESXi, vStandby will always boot from the latest available boot point. 
  • Non-intrusive failover testing
    vStandby replica servers can be boot-tested without interrupting your failover process, ensuring your peace of mind.
  • Failback solution included
    If you need to restore back to your original hardware, vStandby includes a recovery environment to recover your replacement virtual server, including all the changes made, back to the original physical hardware.
  • Minimal disk space requirements 
    Disk space requirements are minimized thanks to NetJapan’s P2V technology that can convert from physical to virtual without a pre-existing backup image.
  • Compliance: Test your Business Continuity Plan (BCP)
    With vStandby you can regularly test your Business Continuity Plan in minutes, helping you comply with government business continuity regulations.
Show more features

Supported Operating Systems

  • vStandby Server Edition:
  • Windows Server 2012 / R2
  • Windows Server 2008 / R2
  • Windows Server 2003 / R2
  • vStandby Desktop Edition:
  • Windows 8.1
  • Windows 8
  • Windows 7
  • Windows Vista
  • Windows XP
  • Virtual Host requirements
  • VMware ESXi v6
  • VMware ESXi v5.5
  • VMware ESXi v5.1
  • ESXi free licence versions 5.1, 5.5 (some limitations apply. See Product Documentation for details)

Hardware requirements

  • CPU
  • Pentium 4 or above
  • Main memory (RAM)
  • Minimum: 1024MB (2048MB or more is recommended)
  • Hard disk space
  • 300MB of available disk space



Download a free, fully functional 30 day trial version of vStandby Server Edition or vStandby Desktop Edition by filling in the form below. You can install vStandby on your physical or virtual Windows Server or Desktop machine and immediately begin creating your vStandby Replica machines.

Try vStandby now

Click here to download trial versions of all of NetJapan’s solutions at the same time.

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