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CTO Blog – Zerto vs Veeam

Often I got asked why we use Zerto and Veeam in our infrastructure. So hence why I write this blog to explain why we use both products.

Both Zerto and Veeam are excellent products, very easy to use and very consumer friendly, and in the first instance they look like they are similar products. However as many things in life, there are major differences and functionality between the two solutions. In this article we will briefly focus on the Disaster Recovery as this is the point where the two products compete.

Round 1 – Veeam

Veeam has been established since 2006 and since the start they were focused on virtualisation, first in monitoring and soon followed by backup and replication. Veeam changed the backup world by providing an easy method of backing up virtual machines and later by replication virtual machines.

Veeam uses VMware snapshot technology in combination with changed block tracking (CBT) to create a replicate of a virtual machine. During the snapshot, a redo file will be created and all changes during the replication process are written into this file. Once the replication job is finished the redo file will be merged into a live disk file again. The next time the replication job is started only the changes since the last job will be replicated to the replica virtual machine.

Round 2 – Zerto

Zerto is founded 2009 and they also were focused on virtualisation. Zerto’s focus has always been disaster recovery and there product provides one of the best recovery options in the market today. Like Veeam, Zerto strength is in the simplification. Their user interface is integrated virtualisation administrator client and is very easy in use.

Zerto uses a different mechanism for their replication. Zerto will deploy small virtual machines on each physical node. These small virtual machines will capture the data that is written to the host and sends a copy of that data to the replication site. The process is not synchronous but near-synchronous replication. The replication is continuous meaning once set it will replicate a change (using Zerto’s own change tracking technology) as it occurs in the virtual machine.

Round 3 – The difference

The main difference between the two solutions are recovery point objectives (RPO) for business justification and method of replication for technical justification. Both solutions have proven that they are providing best in class for disaster recovery solutions of virtual infrastructures. Obvious there is a pricing difference and this is where the justification comes in. I’ve seen many sites that utilises both solutions to provide a good mix of RTO and RPO. The RTO for both solutions are similar, when a VM is replicated it only takes minutes to boot the virtual machine and off you go. However the RPO is a big difference, Zerto provides seconds and Veeam can do 10 minutes minimum depending on your external links and change rates though. With Veeam most companies uses once a day replication.

Conclusion

Both solutions are the best in the market today for virtualisation DR and it really depends on your business what your requirements are. If you already invested in Veeam for backup and your company has low RPO requirements than Veeam is very viable to use for replication. If you are looking for the best RPO in the market for your virtual machines than Zerto can provide this.

In this case there is no right or wrong of what solution you choose, as often in virtual world, it depends…. Both solutions are winners…

PeaSoup Hosting is using both products, which means we can be used for your company as a replication target (DR-as-a-Service). Our platform runs on VMware vCloud and both Veeam and Zerto are fully vCloud certified. For more information please contact us at info@peasoup.net or call us at 01932 268340


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