Data Recovery by Solution

Virtual Machine Data Recovery Experts

Data loss from servers, hypervisors, and virtual machines can be daunting. With 35+ years of data recovery experience and 15 years of virtual machine data recovery experience, Ontrack has recovered data from virtualised systems for thousands of enterprise customers worldwide. Virtualisation adds complexity to the data recovery process and when you need data recovered from virtualised environments, Ontrack is here to help.

Because virtualised systems comprise a unique marriage of software and hardware components, the successful recovery of inaccessible or lost data requires superior knowledge of hypervisors, host servers, storage devices, RAID arrays, file structures, applications, and more.

Ontrack's global team has years of experience and training, a host of proprietary tools, and specialised knowledge gained through unique working relationships with virtual machine software vendors and hardware OEMs that recommend our services. Ontrack virtual machine data recovery experts can help with following:

VMware ESX, vSAN, and Virtual Volumes (VVols) (VMDK files)

Microsoft Hyper-V (VHD, VHDX, and AVHDX files)

Citrix Xen/XenServer

Red Hat Enterprise Virtualisation (RHEV)

Oracle VM/VirtualBox

Linux KVM

Fusion for Mac

VMware Workstation

Ontrack Engineer

Our engineers can handle every VM data loss scenario in virtualised systems.

Whether it's a single virtual machine or an entire virtualised environment on enterprise storage, we can handle it all.

Our recovery capabilities are extensive - whether it is software corruption, device failure, or accidental deletion. Through unique capabilities, years of experience, and hundreds of thousands of successful data recoveries have established Ontrack's reputation as the global leader in the data recovery industry.

Common causes of data loss on virtual storage devices

Common causes of data loss on virtual machines

There are many causes of data loss. Fortunately, Ontrack has expertise to recover data from the following situations and more.

  • Failed disks or damaged RAIDs
  • Deleted LUNs/Volumes
  • Formatted or overwritten hosts, datastores, volumes and VMs
  • Corrupt Datastores or host volumes (VMFS, NTFS, ReFS, EXT, XFS, etc)
  • Corrupted virtual disk files (VMDK, VHD, VHDX, etc)
  • Corrupted guest file systems
  • Deleted VMs or snapshots
  • Deleted files from within a VM

VM System Data Recovery Recommendations

For best results, Ontrack recommends you follow these guidelines to protect you from further data loss. These recommendations can help preserve your chances for successful data recovery with Ontrack.

  • Stop using the system. The more you use it, the more likely recoverable data will be overwritten.

  • Never install data recovery software onto a volume if you require deleted data to be recovered. Installing software, creating, or copying files to the volume can permanently overwrite data in the free space of the volume and make it unrecoverable.

  • If critical data is inaccessible due to accidental deletion, device failure, or corruption, take the volume offline and unmount it immediately.
  • If you choose to attempt data recovery on your own, always work with a backup copy or image file of your data, volume, or virtual disk file.

  • Re-initialising or reformatting a problematic volume will remove all data and complicate data recovery attempts.

  • Only rebuild a RAID array if all of its member drives have been completely imaged, or you have a fully functional and verified backup.

  • Never attempt to force a failed RAID member drive online unless you have all member drives imaged.

Why Ontrack Data Recovery

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Multiple Service Offerings

Ontrack offer's flexible service offerings to meet your unique needs and budgetary considerations. Our experts are on standby 24/7/365.

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Complete Transparency

We want you to have control over your data recovery process. You'll know exactly what can be recovered before paying.

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Unrivaled Global Expertise

Backed by the world’s largest R&D team, we have the knowledge and ability to address your unique data recovery needs.

Virtualised System Data Recovery Services

Contact our specialists for a free consultation immediately if you’ve experienced data loss on a virtualised system. Time is critical, and the probability for a successful data recovery is higher when no previous attempts have been performed. Decades of experience confirm that this is critical for saving your valuable data.

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In-lab Services

Our industry leading tools guarantee the complete removal of data from all types of storage media. Once you send your media to us, we provide an erasure certificate for your records and can also dispose of your media in an environmentally friendly manner.

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Remote Data Recovery

Your data is recovered remotely without your media ever leaving your premises. We connect to your system via the Internet to perform a live recovery. Only available when the system is still operational and not physically damaged.

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Onsite Services

If your data is too sensitive to leave your location, or you want to outsource the service, we can help. We provide secure data destruction on site for any type of device. We can also dispose of the media for you and provide an erasure report for audit and compliance.

What Our Customers Say About Our Data Recovery Services

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4-Step Data Recovery Process

We ensure that our process is transparent, quick and safe. You’ll be informed every step of the way for complete peace of mind.

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Contact us 24/7 worldwide to obtain a free data recovery consultation and written price quote.

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Free Evaluation

The entire evaluation process is transparent with no hidden costs. Once we receive your device, our engineers recommend the best solution, send a fixed price quote and an overview of service levels and delivery schedules.

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Data Recovery

With your approval, we recover your data based on your chosen service level. Through our secure portal you can track the status of your recovery and view a list of recoverable files.

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Data Return

Once your data has been recovered, we’ll send it back to you on an encrypted external device via next day delivery.

How Fast Do You Need Your Data Back?

Our team of trusted experts are on standby to help. We offer flexible service offerings to meet your unique needs and budgetary considerations.



10 business days



Average of 3 business days



Average of 12-24 hours

Experiences that matter

Ontrack has extensive experience with all types of data loss scenarios. Our goal is to provide our customers with peace of mind in the event of data loss due to hardware failure, human error, natural disasters or cyberattacks.



In the business



Customers and growing



Of recovered data


Of data files recovered over the last twenty years... and more and more every day!

Start your data recovery now with a free consultation.

Contact our team of experts.

KLDiscovery Ontrack Limited, Nexus, 25 Farringdon Street, London, EC4A 4AB, United Kingdom (see all locations)