Ontrack engineers can successfully recover data from the oldest to the most recent DAS, SAN or SDS server environments on the market.

We support all vendors, media formats and operating systems. We know your storage systems work around the clock and data loss can happen at any time.

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Experts on all storage systems

A SAN system offers very good performance, high reliability and simplified management. These systems rarely fail and data loss is usually the result of a user error or some other data management function.

The recovery of a SAN system is often an emergency, which is why Ontrack is available 24/7/365 to help recover business critical data. 

Common types of storage system failures

Overwritten storage configuration • Power surge • Failed RAID rebuild • Failed hard disk drive(s)
Deleted snapshots • Metadata corruption • Snapshot management errors • Data management errors

Whatever your data loss situation, Ontrack can help. We also provide data recovery services for the following scenarios:

Hardware failures

  • Failed drives
  • Failed controllers
  • Power issues

Software failures

  • Failed RAID rebuilds
  • Metadata corruption

User error

  • Deleted data/snapshots
  • Overwritten volumes
  • Deleted volumes
  • Data management errors

24/7/365 availability

We know your storage systems work around the clock and data loss can happen at any time. That's why we have a team of experienced consultants and engineers working 24/7 ready to recover your data.

During your free consultation our data recovery experts will:

  • Confirm your hardware, configuration, operating system and virtualisation software
  • Assess the data loss situation and ongoing risks
  • Provide tips to prevent further data loss
  • Assess the possibility of a Remote Data Recovery
  • Advise on preparations to send in for an in lab data recovery
+44 (0)1372 741 999
SAN data recovery specialists

SAN manufacturer partnerships

Partnerships for successful data recoveries

We work directly with most DAS, SAN and SDS server manufacturers to provide you with the best data recovery solutions possible.

Ontrack partners with most hardware and software OEMs to produce the best results for our customers by increasing the speed, accuracy and success of data recovery. Ontrack also offers the fastest and most secure data recovery through our patented  Remote Data Recovery (RDR) service.

+44 (0)1372 741 999


Enterprise NAS/SAN/Server Case Studies

Missing Dell® EqualLogic™ LUNs Recovered via Remote Data Recovery.

Feb 20, 2020, 16:17 PM
Title : Missing Dell® EqualLogic™ LUNs Recovered via Remote Data Recovery.
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Client :
A large municipal event center in the US lost data on a Dell® EqualLogic™ iSCSI SAN configured with in a RAID 50 running VMware® ESXi™ 5.5.

VMware snapshots filled up the datastore causing the system to crash. The customer attempted to delete one of the snapshots, but after four hours of processing without success, they had to give up. Working with VMware support, they were able to get the VMware ESXi 5.5 host to boot, but were missing critical data from six of the iSCSI LUNs. This system was unique because it was using the EqualLogic LUNs as raw device mappings (RDMs) attached to the guest instead of the traditional virtual disks (VMDKs) on VMFS datastores.
The event center called Ontrack at noon on a Saturday for emergency service.

Highly-trained data recovery engineers connected remotely to the EqualLogic LUNs using their proprietary remote data recovery (RDR) solution and started assessing the damage. During the evaluation, the engineers were able to locate the snapshots containing the missing data and virtually apply them to RDMs. Once the snapshots had been applied, the Ontrack engineering team was able to access the underlying NTFS volume, virtually repair the NTFS corruption, and extract the data.
Within 12 hours Ontrack was able to reunite the customer with the lost data which totaled over 250,000 files (-250GB of data).

“I was most impressed with the customer service I received from Ontrack throughout the data recovery process, the speed at which all the data was restored and the fact that during the entire restore process we were able to have our live environment up and running.”
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Tags : Dell EqualLogic

The data recovery process

From initial consultation to ongoing support, we help businesses and consumers in any data loss situation – from simple to the most complex and catastrophic.

When business or personal data is lost, we understand that it can be a very frustrating and stressful time. That's why our data recovery process is straightforward and transparent, and we'll keep you up to date every step of the way.

Join over a half million people and businesses who have trusted Ontrack to recover their data.

We'll collect your device and perform an evaluation, free of charge.

Data recovery for single drives and smartphones starts from £478.80 (inclusive of VAT). The final price will be determined at the end of the evaluation, according to the complexity of the work involved and the urgency required.

To begin, start by clicking on the type of media from which you need data recovered. The evaluation time for single hard drives (HDD and SSD) is four hours*, and within 24 hours for RAID systems*. Other media, such as mobile phones do not require an evaluation to provide an accurate quotation.

*These are typical time frames and apply within normal business hours (Monday to Friday, 9am to 5pm). For an out of hours, emergency service, or for further assistance, please contact us on +44 (0)1372 741999.

Step 1

Device Type
Step 2

Data Loss Reason
Step 3

Details & Evaluation

What type of device do you need data recovery for?

What is the main reason for your data loss?

What data is most important to you? Additional comments?

* The free evaluation may not be possible. Please contact us or enter your details and we will contact you as soon as possible. In case of assistance please call: +44 (0)1372 741 999

1. Contact details

2. Shipping details

Would you like to start your FREE evaluation?:
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By submitting this form you acknowledge that:
  • The free evaluation will be completed by KLDiscovery Ontrack Ltd (trading as Ontrack), Nexus, 25 Farringdon Street, London EC4A 4AB.
  • If you choose not to go ahead with the recovery after the evaluation, and would like your device returned, we will ship back to you for £9.60 (inc. VAT) for UK mainland shipping (next day service). Other delivery costs may vary. If you choose to go ahead and we cannot recover your data, we will return your device free of charge. Alternatively, we can securely destroy your media.
  • You authorise Ontrack to begin the evaluation immediately. During the free evaluation, you can cancel at any time. If you are a consumer and place an order, you have a period of 14 days in which to cancel the Order but you acknowledge that your right to cancel will be lost if Ontrack completes the evaluation before your notice to cancel is received. Full details for cancellation and your rights are set out in our Terms and Conditions. In order to cancel, please email or call Ontrack using the contact details provided or use the model cancellation form on our website.

For information on how we collect, process and retain your personal data, please see our Privacy Policy.