Which is the best data management solution? Compare Veeam with Double-Take and Zerto

Choosing an effective, intelligent data management and backup solution is essential for any forward-thinking organisation today.

Strategic decisions are increasingly being made based on data. so this data has to be accurate, easily accessible and secure. But data management infrastructure often fails to keep pace with data growth, particularly within small and medium or rapidly growing enterprises.

A recent survey by Rubicon Consulting found that SMEs managing explosive data growth often have backup processes that could put their data at risk.

According to the London Chamber of Commerce, 90% of businesses that suffer a major data loss have closed down within two years.

But for such an important decision, which data management and backup solution is the best one for your organisation?

Here we explore three of the main players – Veeam, Double-Take and Zerto – and compare the relative pros and cons of both Double-Take and Zerto to the popular Veeam solution.


About Veeam

“Founded in 2006, Veeam is the leader in intelligent data management for the Hyper-Available Enterprise. As the leader in Availability across multi-cloud environments, Veeam is uniquely positioned to help customers along their journey to Intelligent Data Management.”

Veeam is chosen by over 320k customers, including 80% of the Fortune 500.

What Veeam does

The Veeam Backup & Replication package is a powerful, easy-to-use and affordable data protection solution. VeeamONE integrates with Veeam Backup & Replication™ to bring its advanced monitoring, reporting and capacity planning capabilities to backup. Then the Veeam Backup Management Suite combines Veeam Backup & Replication with the powerful monitoring and reporting capabilities of VeeamONE to offer #1 VM Backup with advanced monitoring, reporting and capacity planning for backup and virtual infrastructures.

VeeamONE helps administrators to assess their current infrastructure and provides them with intelligent monitoring and alerting system a with built-in knowledge base for fast troubleshooting. Its reporting tools assist administrators in virtual resources optimisation.

VeeamOne delivers the visibility, scalability and control you need and protects your investment in virtualisation. It increases administrator productivity and helps mitigate daily management risks for virtual environments of all sizes.

What Veeam offers

  • Modern data protection solution for both SMBs as well as large enterprises.
  • Fast Backup and Replication using Near Continuous Data Protection CDP techniques giving the best RTOs and RPOs (what Veeam calls RTPO) of less than 15 minutes.
  • Agentless, application-aware backup and replication making the solution extremely easy to use and manage.
  • Storage agnostic solution, whereas no dependencies on storage type in production and DR site.
  • Single interface for Backup and Replication for both VMware and Hyper-V virtual environment.
  • Easily expandable backup architecture that can fit growing data centre needs, with built-in ability to monitor bottlenecks during backup/replication jobs
  • ‘Out of the box’ Deduplication and Compression technology.
  • Support for compliance with data protection best practices by keeping multiple copies of backup files on different media in different locations.
  • Advanced Application Items Recovery supporting every single virtualised application like Exchange, Active Directory, SharePoint.
  • On-demand sandbox environment for testing or recovery purposes through isolated network lab from both backup and replicas.
  • Self-Sufficient backup files to avoid single THE point of failure often associated with catalogs.
  • Intelligent failover mechanism with automatic VM network Re-Mapping and Re-IP on DR site.

About Double-Take

Recently acquired by Carbonite, Double-Take is a leading provider of high availability (HA), disaster recovery (DR) and migration software solutions for physical, virtual, cloud and data services. The software is used by more than 6000 customers from SMEs to Fortune 500 companies in over 70 countries.

What Double-Take does

Double-Take Software offers an easy to use and affordable workload optimisation solution, which gives users the ability to easily access data and manage desktop and server workloads in both virtual and physical environments, whatever the location or platform. Double-Take also enables users to move workloads for migration and offers continuous backup and recovery for applications and data.

Used with VMware, Double-Take can replicate application data from multiple production servers to a single disaster recovery target, then failing over to the disaster recovery target in the event of an outage.

What Double-Take offers

  • Availability: Ensure critical IT workloads are available for business continuity and disaster recovery using real-time replication and failover that can protect individual applications, entire servers or virtualized workloads running on VMware ESX or Microsoft Hyper-V.
  • Backup: Continuously backup and recover workloads whenever required to a new physical or virtual machine.
  • Migration: Move workloads between different virtual and physical hardware (P2P, P2V, V2P, V2V or X2X) within data centres or across locations for data centre migrations and consolidations.
  • Flexibility: Double Take allows users to manage workloads without requiring specialised HBAs, by booting them from iSCSI SANs.

How does Double-Take compare to Veeam?

Veeam is a 2-in-1 Backup and Replication Solution with built-in Deduplication and Compression, providing best protection for VMware and Hyper-V environments. Double-Take is a Replication engine, so additional software is required to take care of the backup.

Veeam can go back in time from Replicas instantly. Recovering from an old restore point in time with Double-Take can take much longer.

Veeam Backup and Replication is an agentless solution, which is easy to deploy and scalable. Double-Take requires agents and additional resources and administration.

In case of Hyper-V, Veeam developed Change Block Tracking for Hyper-V which make sure that only changed blocks are replicated each time, which reduces bandwidth requirement, as Double-Take just replicates on the storage block level without any optimisation.

Veeam Backup and Replication performs application-aware image level backup and replication without the need for extra agents to backup/replicate applications. Veeam also has the ability to restore files and application items such as Exchange and SQL directly from the backup disk/replica without the need for any staging. Double-Take doesn’t offer this facility and requires agents for each application to be replicated.

Veeam is the only data protection solution that provides the ability to guarantee backups and replicas using SureBackup and SureReplica technologies, whereas Veeam automatically performs the test on the VM, OS and Application level. Double-Take doesn’t have this ability. Moreover, when data is corrupted in the source it is silently replicated in the DR site, which is a real risk.

Veeam has built-in software WAN Accelerators using different techniques such as caching, compression/deduplication and bandwidth throttling to ensure minimum impact on network and adopt a fault tolerant bandwidth (Veeam Replication can work on links as low as 1MBPS). Double-Take requires a lot of I/O through a lot of bandwidth consumption.

Veeam has the ability to monitor production SAN latency during both backup and replication and can throttle the Read IOPS to avoid any impact on production (this is a patented technology of Veeam). Double-Take doesn’t provide this facility, keeping a high utilisation on production.

Veeam is licensed per CPU Socket regardless of the number of VMs and the disk space consumed on the production storage, which makes Veeam a budget-friendly solution.


About Zerto

Zerto is an Israeli-American software manufacturer specialising in data protection, owned by venture capital firms.

Zerto combines disaster recovery, backup and cloud mobility in a simple, converged platform. It is used by more than 6,000 customers globally

What Zerto does

The Zerto solution focuses on continuous data protection and near-continuous VM replication (no storage snapshot, no real backup, no long-term retention). Zerto protects virtual (VMware & Hyper-V) and Cloud (Azure, AWS) environments.

What Zerto offers

Zerto offers a single point-product (Zerto Virtual Replication), with several editions:

  • Zerto Virtual Replication (ZVR): CDP for replication and recovery of VMware and Hyper-V VMs on-premises, and replication to Zerto SP.
  • Zerto Virtual Replication to Public Cloud (ZVR PUB): CDP for replication and recovery of VMs to Public Cloud (AWS, Azure).
  • Zerto Virtual Replication Enterprise Cloud (ZVR ECE): CDP for replication and recovery of VMs across on-premises and public cloud data centres, and to SP.
  • Zerto Virtual Replication Migration (ZVR MIG): CDP for migration of VMs from one location to another.
  • VSS Agent: an add-on for ZVR to achieve SQL app- consistency. Agent to install on each VM.

How does Zerto compare with Veeam?

Unlike Veeam, Zerto needs third party tools to offer a complete data protection solution, which can introduce additional complexity (multiple tools to deploy, manage and support) and cost (administrative time of managing multiple tools and risk of paying for separate tools with overlapping capabilities). As there is no unified visibility across all data protection tools, this may lead to workloads going unnoticed or not being protected correctly.

Zerto can be an expensive solution, particularly as it only offers rigid VM replication. At less than half the cost of Zerto, Veeam offers compete data protection capabilities (replication, snap, backup and archive). While Zerto’s cost may be justifiable only for the most critical VMs needing the lowest RPO, it is generally too high for the other VMs. Veeam offers advanced VM replication fit for most VMs, at a fraction of Zerto’s cost, and integrated with backup.

Its non-customisable 5-second RPO can mean Zerto is unsuitable for most VMs, which need replication on a minutely, hourly, or daily basis. Veeam offers admins the flexibility to adjust the RPO to fit different replication SLAs.

In comparison to Veeam, Zerto facilitates the move from backup to long-term retention. However, its backup system lacks the flexibility and advanced features of Veeam and allows for retention of up to one year only. In Zerto, flexibility is limited as the backup job is based on the VM replication job (admins do not select specific VMs to backup), there are limited repository options (Zerto server’s local folder or SMB share at DR site), and you cannot restore a single VM if the backup job contains several VMs.

Zerto allows you to automate DR testing, which Veeam doesn’t. However, this facility has limited recoverability verification features, requiring considerably more administrator actions. The automation offered by Zerto can bring its own issues. For example: admins cannot select replicas to test (Zerto tests together replicas listed in a same VM replication job); there is no verification scheduling (admins must manually start/end test jobs using a 3rd party open-source tool to create schedules); there are no advanced verification tests (admins must manually verify that VM replicas work correctly); and no isolation from production network and VMs (VM replicas are just tested on a specified network, which could give rise to a potential IP conflict).


Hopefully this information has helped you narrow your search for the ideal data management and backup solution for your business.

But if you’d like to discuss your requirements in more detail with an experienced UK-based disaster recovery specialist, please call us today on 03453 888 327 or email enquiries@virtualDCS.co.uk

Don’t gift wrap your data for hackers this Christmas – invest in an off-site backup solution.

When you think about it, IT managers hold the fate of a business in their hands, after all, data is one of the most important assets to any business. This is why off-site backup is so important.

From customer databases, to purchase orders and to invoices, would your place of work still run effectively without it? Would customers complain? Would manufacturing be delayed, would deliveries slow? If a guaranteed level of service is given, would customers have to be compensated, what impact would this have on the business? Cash flow issues? Redundancies? All of this responsibility lies in the hands of the IT manager, who has to protect the business systems from hackers.

offsite backupHow does Ransomware work?

To ensure data is best protected, it is important to go back to the basics and acknowledge how it works. In its simplest form, Ransomware is infectious software that once opened on a device will encrypt data and block user access until a ransom for release is paid.

The ransom payment is typically requested in a cryptocurrency format, the most popular being Bitcoin, as it is incredibly difficult to trace these digital currencies and allows an extra layer of protection for the hackers.

Once exposed, the infection does not limit itself to one device and crawls along any associated networks, scouting all devices and data associated, finding as much information as possible before locking down and encrypting.

 Ransomware is currently one of the biggest threats to businesses worldwide.

The Internet organised crime threat assessment (IOCTA) recently published its 2018 Cybercrime report and has firmly placed Ransomware at the top of the list once more. Although the growth of Ransomware is now slowing down, it remains one of the most active hacking methods, with many criminals using data gathered from initial Ransomware infections to target users further.

Ransomware is not a new development it has been around for a while and has evolved from early threats like the Floppy disk Trojans of 1989. You can read about the evolution of ransomware in our infographic, but it has since developed into modern strands that include WanaCry and CryptoLocker, partly driven by the massive implementation of technology in our everyday lives.

Offsite data virtualDCS ChristmasI back up my data already, is it protected?

Yes and no. If backups are connected to your existing network, then you may as we hold up the white flag as these will be encrypted, along with the original data. The only way to ensure total data protection is to store your data away from the network, off-site.

Thanks to the cloud the process of migrating data off-site has never been simpler, and you do not have to think about the archaic tape-based solutions.

Additionally, for an extra layer of security, it is also advisable to limit employees that can access this data off-site to prevent insider attacks. It may sound like an obvious step, but given all the responsibilities the IT manager has, it can often be forgotten, with a staggering amount of organisations granting permissions that are not required.

The way forward

We have made it no secret that we think Veeam software is one of the most comprehensive business continuity solutions in the marketplace and using Veeam cloud connect to transfer data to one of virtualDCS’ secure off-site data centres means that data protection has never been simpler.

Ensuring data security

Ransomware threats combined with data adequacy and Brexit concerns mean that it has never been more important to know where your data is located. Storing data in the UK offers an additional layer of protection to businesses, and you can read about it in depth in our blog ‘Is your data at risk after Brexit? Five ways to protect it now’.

If you would like to speak to someone about your current disaster recovery plan and how you can future-proof your data contact the team on 03453 888 327 or email sales@virtualDCS.co.uk

#veeamchallenge: Replicating legacy technology

A Blog by Joe Brain, Support Apprentice at virtualDCS.

In the office this quarter we’ve been celebrating old technology, from the solar-powered calculator to the wonderful Waddington’s Wizard, but we didn’t stop there.

We’ve wanted to combine our love of old technology with one of the world’s leading backup and replication solutions, Veeam Cloud Connect and this is where the virtualDCS technical team were challenged to protect the oldest legacy system we could find.

We are pleased to say that we’ve managed to complete the challenge and replicate MSDOS. Naturally, we couldn’t go back any further than that as it’s one of the oldest Microsoft Operating Systems.

The hardest part about replicating the system was finding a copy of it in the first place! After that, everything was straightforward since Veeam doesn’t differentiate between operating systems, there are no special requirements for replicating MSDOS, which means any operating system can be replicated.

In a real world scenario, if someone has to keep a specific application running that can only be deployed on MSDOS, the programme would still require replicating in order to protect its enclosed data. Using Veeam, this doesn’t have to be a concern.

The process

To protect our customer privacy we decided to upload some screenshots of the process instead of a video demonstration as we have done previously, however if you’d like to see a demo we’re more than happy to accommodate if you get in touch with the team.





Since the setup is the same as other replications we didn’t set it to repeat.


Here the replication is in progress with no errors occurring.


The replication has completed successfully and is working correctly.


For more information on our legacy challenge or our Veeam Cloud Connect suite, please follow the links or contact virtualDCS on 03453 888 327 or by emailing sales@virtualDCS.co.uk.

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